2017-07-25 13:58 GMT+02:00 Enrico Olivelli <eolive...@gmail.com>: > I noticed that the "performance" drop in my bench happens contextually to > the opening of several "RandomAccessFile", to .dx files. > > In my bench I continue to perform writes and after some time the overall > performance (latency and throughtput) "degrade" > while the bench is running I see that the overall number of open files > (with "lsof") and the number of open RandomAccessFile (using YourKit > profile) continue to grow. > > The mechanics in FileInfo are quite complex >
I have changed setOpenFileLimit to 10 and the Bookie seems respects this value. Even if only 10 index files are kept open performances drop anyway > > can this be a clue on my problem ? > > This is the code of the bench > https://github.com/eolivelli/bookkeepers-benchs/blob/master/src/test/java/ > BookKeeperWriteSynchClientsTest.java > > just clone from GitHub and run the test > on my laptop it starts with 80,0 MB/s throughput and when the "slow down" > occours it drops to 9 MB/s > > Any suggestion ? > > -- Enrico > > > 2017-07-24 22:31 GMT+02:00 Enrico Olivelli <eolive...@gmail.com>: > >> >> >> Il lun 24 lug 2017, 19:54 Venkateswara Rao Jujjuri <jujj...@gmail.com> >> ha scritto: >> >>> On Mon, Jul 24, 2017 at 3:06 AM, Enrico Olivelli <eolive...@gmail.com> >>> wrote: >>> >>> > 2017-07-21 20:37 GMT+02:00 Enrico Olivelli <eolive...@gmail.com>: >>> > >>> > > >>> > > >>> > > Il ven 21 lug 2017, 20:32 Sijie Guo <guosi...@gmail.com> ha scritto: >>> > > >>> > >> As the discussion in a separate thread, it might be making sense to >>> > check >>> > >> what is the difference between using pooled allocator and unpooled >>> > >> allocator using v3 protocol. Also considering comparing using heap >>> > buffer >>> > >> and direct buffer as well. >>> > >> >>> > >> I am suspecting this might contribute latency. >>> > >> >>> > > >>> > > Yep, I am looking in this direction too. >>> > > I see that many frequent writes lead to an huge use of non heap >>> memory, >>> > > even bounding the JVM with MaxDirectMemory with max 1GB all, the >>> 12GB of >>> > my >>> > > laptop blow away during the run of my benchmark. >>> > > I suspect it is something in direct memory or something in SO caches. >>> > > I am not very skilled in SO linux memory diagnostics >>> > > >>> > >>> > >>> > I wrote a new "write intensive" benchmark, and the only thing I have >>> > noticed is that Linux is using as much RAM as possible for disk caches, >>> > this is the expected behavior on Linux. >>> > >>> >>> Yes, and this is good behavior. Why keep something unused? >>> >> >> Yes this is why linux is better then other OSs, like Windows. >> >>> >>> >>> > This is not memory allocated to the process itself. >>> > There is no difference from 4.4 and 4.5 from this aspect. >>> > >>> > I have tried the journalRemoveFromPageCachebut it brings no >>> improvement. >>> > >>> > I did some tests as suggested by Flavio, separating the client and the >>> > bookie (even on different machines). I can say there is no "leak" nor >>> on >>> > client side neither on bookie side. >>> > >>> > >>> > finally during my benchmarks I noticed that the real "performance drop" >>> > happens after this lines of log >>> > >>> > lug 24, 2017 12:00:56 PM org.apache.bookkeeper.bookie.EntryLogger >>> > flushRotatedLogs >>> > INFO: Synced entry logger 0 to disk >>> > >>> > I am now investigating why after the first "flushRotatedLogs" bookie is >>> > slowing down >>> > >>> > >>> Thanks for the update. Eager to learn what is the culprit. >>> >>> JV >>> >>> >>> > >>> > Enrico >>> > >>> > >>> > >>> > >>> > > >>> > > Enrico >>> > > >>> > > >>> > > >>> > >> >>> > >> >>> > >> >>> > >> - Sijie >>> > >> >>> > >> On Thu, Jul 20, 2017 at 4:49 AM, Enrico Olivelli < >>> eolive...@gmail.com> >>> > >> wrote: >>> > >> >>> > >> > Kishore, do you have news? >>> > >> > >>> > >> > Il ven 14 lug 2017, 09:05 Enrico Olivelli <eolive...@gmail.com> >>> ha >>> > >> > scritto: >>> > >> > >>> > >> > > At the meeting we told the Kishore will perform some benchmarks >>> on >>> > his >>> > >> > > side. >>> > >> > > He will take a look at my code, and we are going to share the >>> > results. >>> > >> > > Maybe it will be possible to share the results of benchmarks >>> done >>> > from >>> > >> > > Kishore at Salesforce too. >>> > >> > > >>> > >> > > The primary goal is to understand the differences between 4.4 >>> and >>> > 4.5, >>> > >> > for >>> > >> > > instance if we there is a need to change JVM/BK configuration in >>> > >> order to >>> > >> > > make 4.5 perform as 4.4. >>> > >> > > >>> > >> > > @Sijie I hope I have answered your questions. >>> > >> > > >>> > >> > > >>> > >> > > -- Enrico >>> > >> > > >>> > >> > > >>> > >> > > 2017-07-13 9:29 GMT+02:00 Enrico Olivelli <eolive...@gmail.com >>> >: >>> > >> > > >>> > >> > >> >>> > >> > >> >>> > >> > >> 2017-07-13 4:11 GMT+02:00 Sijie Guo <guosi...@gmail.com>: >>> > >> > >> >>> > >> > >>> On Wed, Jul 12, 2017 at 10:35 PM, Enrico Olivelli < >>> > >> eolive...@gmail.com >>> > >> > > >>> > >> > >>> wrote: >>> > >> > >>> >>> > >> > >>> > Sijie, JV, just a recap my point of view: >>> > >> > >>> > - considering latency = "time for asynchAddEntry to >>> complete" >>> > >> > >>> > - there is a some difference from 4.4 and 4.5 in the usage >>> of >>> > >> memory, >>> > >> > >>> but >>> > >> > >>> > no so clear >>> > >> > >>> > - the type of GC (parallel vs G1) does not impact very much >>> but >>> > >> with >>> > >> > >>> G1 you >>> > >> > >>> > achieve best latency >>> > >> > >>> > >>> > >> > >>> >>> > >> > >>> Did you try CMS for v3 protocol? >>> > >> > >>> >>> > >> > >> >>> > >> > >> BK 4.5 + v3 procotol + CMS + throttle = 0 >>> > >> > >> >>> > >> > >> #0 Total wall clock time: 309.0 ms, total callbacks time: >>> 249753 >>> > ms, >>> > >> > >> entry size 0,034 MB -> 249,75 ms per entry (latency),0,3 ms per >>> > entry >>> > >> > >> (throughput) 110,6 MB/s throughput >>> > >> > >> #1 Total wall clock time: 192.0 ms, total callbacks time: >>> 156268 >>> > ms, >>> > >> > >> entry size 0,034 MB -> 156,27 ms per entry (latency),0,2 ms per >>> > entry >>> > >> > >> (throughput) 178,0 MB/s throughput >>> > >> > >> #2 Total wall clock time: 129.0 ms, total callbacks time: >>> 95279 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 95,28 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 265,0 MB/s throughput >>> > >> > >> #3 Total wall clock time: 125.0 ms, total callbacks time: >>> 94661 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 94,66 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 273,4 MB/s throughput >>> > >> > >> #4 Total wall clock time: 112.0 ms, total callbacks time: >>> 83015 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 83,02 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 305,2 MB/s throughput >>> > >> > >> #5 Total wall clock time: 111.0 ms, total callbacks time: >>> 82839 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 82,84 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 307,9 MB/s throughput >>> > >> > >> #6 Total wall clock time: 114.0 ms, total callbacks time: >>> 82562 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 82,56 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 299,8 MB/s throughput >>> > >> > >> #7 Total wall clock time: 104.0 ms, total callbacks time: >>> 74356 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 74,36 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 328,7 MB/s throughput >>> > >> > >> #8 Total wall clock time: 110.0 ms, total callbacks time: >>> 83488 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 83,49 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 310,7 MB/s throughput >>> > >> > >> #9 Total wall clock time: 102.0 ms, total callbacks time: >>> 68787 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 68,79 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 335,1 MB/s throughput >>> > >> > >> >>> > >> > >> gc.log >>> > >> > >> Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for linux-amd64 >>> JRE >>> > >> > >> (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > gcc >>> > >> > 4.3.0 >>> > >> > >> 20080428 (Red Hat 4.3.0-8) >>> > >> > >> Memory: 4k page, physical 32870636k(3276148k free), swap >>> > >> > >> 15622140k(15460604k free) >>> > >> > >> CommandLine flags: -XX:+CMSIncrementalMode >>> > >> > -XX:InitialHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> > >> <(214)%20748-3648> -XX:MaxHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> >>> > >> > >> -XX:MaxNewSize=697933824 -XX:MaxTenuringThreshold=6 >>> > >> > -XX:NewSize=697933824 >>> > >> > >> -XX:OldPLABSize=16 -XX:OldSize=1395867648 -XX:+PrintGC >>> > >> > >> -XX:+PrintGCTimeStamps -XX:+UseCompressedClassPointers >>> > >> > >> -XX:+UseCompressedOops -XX:+UseConcMarkSweepGC -XX:+UseParNewGC >>> > >> > >> 0,630: [GC (Allocation Failure) 545344K->8508K(2029056K), >>> > 0,0065802 >>> > >> > secs] >>> > >> > >> 1,196: [GC (Allocation Failure) 553852K->117940K(2029056K), >>> > >> 0,0385576 >>> > >> > >> secs] >>> > >> > >> 1,235: [GC (CMS Initial Mark) 119486K(2029056K), 0,0022661 >>> secs] >>> > >> > >> 1,544: [GC (Allocation Failure) 663284K->207833K(2029056K), >>> > >> 0,0330904 >>> > >> > >> secs] >>> > >> > >> 1,731: [GC (CMS Final Remark) 560308K(2029056K), 0,0105624 >>> secs] >>> > >> > >> 1,837: [GC (Allocation Failure) 753177K->214147K(2029056K), >>> > >> 0,0105574 >>> > >> > >> secs] >>> > >> > >> 2,115: [GC (Allocation Failure) 759491K->241263K(2029056K), >>> > >> 0,0166134 >>> > >> > >> secs] >>> > >> > >> >>> > >> > >> >>> > >> > >> BK 4.5 + v2 protocol + CMS + throttle = 0 >>> > >> > >> >>> > >> > >> #0 Total wall clock time: 198.0 ms, total callbacks time: >>> 169954 >>> > ms, >>> > >> > >> entry size 0,034 MB -> 169,95 ms per entry (latency),0,2 ms per >>> > entry >>> > >> > >> (throughput) 172,6 MB/s throughput >>> > >> > >> #1 Total wall clock time: 106.0 ms, total callbacks time: >>> 70885 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 70,89 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 322,4 MB/s throughput >>> > >> > >> #2 Total wall clock time: 109.0 ms, total callbacks time: >>> 71848 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 71,85 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 313,6 MB/s throughput >>> > >> > >> #3 Total wall clock time: 97.0 ms, total callbacks time: 73583 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 73,58 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 352,4 MB/s throughput >>> > >> > >> #4 Total wall clock time: 91.0 ms, total callbacks time: 61293 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 61,29 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 375,6 MB/s throughput >>> > >> > >> #5 Total wall clock time: 98.0 ms, total callbacks time: 73006 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 73,01 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 348,8 MB/s throughput >>> > >> > >> #6 Total wall clock time: 104.0 ms, total callbacks time: >>> 75696 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 75,70 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 328,7 MB/s throughput >>> > >> > >> #7 Total wall clock time: 103.0 ms, total callbacks time: >>> 79260 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 79,26 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 331,8 MB/s throughput >>> > >> > >> #8 Total wall clock time: 92.0 ms, total callbacks time: 62232 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 62,23 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 371,5 MB/s throughput >>> > >> > >> #9 Total wall clock time: 98.0 ms, total callbacks time: 65359 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 65,36 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 348,8 MB/s throughput >>> > >> > >> >>> > >> > >> >>> > >> > >> gc.log >>> > >> > >> Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for linux-amd64 >>> JRE >>> > >> > >> (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > gcc >>> > >> > 4.3.0 >>> > >> > >> 20080428 (Red Hat 4.3.0-8) >>> > >> > >> Memory: 4k page, physical 32870636k(3154408k free), swap >>> > >> > >> 15622140k(15460604k free) >>> > >> > >> CommandLine flags: -XX:+CMSIncrementalMode >>> > >> > -XX:InitialHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> > >> <(214)%20748-3648> -XX:MaxHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> >>> > >> > >> -XX:MaxNewSize=697933824 -XX:MaxTenuringThreshold=6 >>> > >> > -XX:NewSize=697933824 >>> > >> > >> -XX:OldPLABSize=16 -XX:OldSize=1395867648 -XX:+PrintGC >>> > >> > >> -XX:+PrintGCTimeStamps -XX:+UseCompressedClassPointers >>> > >> > >> -XX:+UseCompressedOops -XX:+UseConcMarkSweepGC -XX:+UseParNewGC >>> > >> > >> 0,554: [GC (Allocation Failure) 545344K->8624K(2029056K), >>> > 0,0060763 >>> > >> > secs] >>> > >> > >> 1,478: [GC (Allocation Failure) 552028K->79872K(2029056K), >>> > 0,0252399 >>> > >> > >> secs] >>> > >> > >> 1,504: [GC (CMS Initial Mark) 84227K(2029056K), 0,0017813 >>> secs] >>> > >> > >> >>> > >> > >> >>> > >> > >> BK 4.4 + v3protocol + CMS + throttle = 0 >>> > >> > >> >>> > >> > >> #0 Total wall clock time: 214.0 ms, total callbacks time: >>> 207369 >>> > ms, >>> > >> > >> entry size 0,034 MB -> 207,37 ms per entry (latency),0,2 ms per >>> > entry >>> > >> > >> (throughput) 159,7 MB/s throughput >>> > >> > >> #1 Total wall clock time: 153.0 ms, total callbacks time: >>> 140661 >>> > ms, >>> > >> > >> entry size 0,034 MB -> 140,66 ms per entry (latency),0,2 ms per >>> > entry >>> > >> > >> (throughput) 223,4 MB/s throughput >>> > >> > >> #2 Total wall clock time: 159.0 ms, total callbacks time: >>> 145131 >>> > ms, >>> > >> > >> entry size 0,034 MB -> 145,13 ms per entry (latency),0,2 ms per >>> > entry >>> > >> > >> (throughput) 215,0 MB/s throughput >>> > >> > >> #3 Total wall clock time: 109.0 ms, total callbacks time: >>> 105018 >>> > ms, >>> > >> > >> entry size 0,034 MB -> 105,02 ms per entry (latency),0,1 ms per >>> > entry >>> > >> > >> (throughput) 313,6 MB/s throughput >>> > >> > >> #4 Total wall clock time: 114.0 ms, total callbacks time: >>> 110111 >>> > ms, >>> > >> > >> entry size 0,034 MB -> 110,11 ms per entry (latency),0,1 ms per >>> > entry >>> > >> > >> (throughput) 299,8 MB/s throughput >>> > >> > >> #5 Total wall clock time: 118.0 ms, total callbacks time: >>> 111534 >>> > ms, >>> > >> > >> entry size 0,034 MB -> 111,53 ms per entry (latency),0,1 ms per >>> > entry >>> > >> > >> (throughput) 289,7 MB/s throughput >>> > >> > >> #6 Total wall clock time: 98.0 ms, total callbacks time: 87425 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 87,43 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 348,8 MB/s throughput >>> > >> > >> #7 Total wall clock time: 135.0 ms, total callbacks time: >>> 129583 >>> > ms, >>> > >> > >> entry size 0,034 MB -> 129,58 ms per entry (latency),0,1 ms per >>> > entry >>> > >> > >> (throughput) 253,2 MB/s throughput >>> > >> > >> #8 Total wall clock time: 99.0 ms, total callbacks time: 84986 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 84,99 ms per entry (latency),0,1 ms per entry >>> > >> > (throughput) >>> > >> > >> 345,2 MB/s throughput >>> > >> > >> #9 Total wall clock time: 125.0 ms, total callbacks time: >>> 117492 >>> > ms, >>> > >> > >> entry size 0,034 MB -> 117,49 ms per entry (latency),0,1 ms per >>> > entry >>> > >> > >> (throughput) 273,4 MB/s throughput >>> > >> > >> >>> > >> > >> gc.log >>> > >> > >> Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for linux-amd64 >>> JRE >>> > >> > >> (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > gcc >>> > >> > 4.3.0 >>> > >> > >> 20080428 (Red Hat 4.3.0-8) >>> > >> > >> Memory: 4k page, physical 32870636k(3212484k free), swap >>> > >> > >> 15622140k(15460604k free) >>> > >> > >> CommandLine flags: -XX:+CMSIncrementalMode >>> > >> > -XX:InitialHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> > >> <(214)%20748-3648> -XX:MaxHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> >>> > >> > >> -XX:MaxNewSize=697933824 -XX:MaxTenuringThreshold=6 >>> > >> > -XX:NewSize=697933824 >>> > >> > >> -XX:OldPLABSize=16 -XX:OldSize=1395867648 -XX:+PrintGC >>> > >> > >> -XX:+PrintGCTimeStamps -XX:+UseCompressedClassPointers >>> > >> > >> -XX:+UseCompressedOops -XX:+UseConcMarkSweepGC -XX:+UseParNewGC >>> > >> > >> 0,572: [GC (Allocation Failure) 545344K->8016K(2029056K), >>> > 0,0057737 >>> > >> > secs] >>> > >> > >> 0,882: [GC (Allocation Failure) 553360K->88089K(2029056K), >>> > 0,0205542 >>> > >> > >> secs] >>> > >> > >> 0,903: [GC (CMS Initial Mark) 93974K(2029056K), 0,0010542 >>> secs] >>> > >> > >> 1,100: [GC (Allocation Failure) 633433K->94935K(2029056K), >>> > 0,0359948 >>> > >> > >> secs] >>> > >> > >> 1,221: [GC (CMS Final Remark) 384627K(2029056K), 0,0079453 >>> secs] >>> > >> > >> 1,313: [GC (Allocation Failure) 640279K->98309K(2029056K), >>> > 0,0157774 >>> > >> > >> secs] >>> > >> > >> 1,481: [GC (Allocation Failure) 643653K->154062K(2029056K), >>> > >> 0,0179418 >>> > >> > >> secs] >>> > >> > >> 1,677: [GC (Allocation Failure) 699406K->210685K(2029056K), >>> > >> 0,0312668 >>> > >> > >> secs] >>> > >> > >> 1,709: [GC (CMS Initial Mark) 211186K(2029056K), 0,0006615 >>> secs] >>> > >> > >> 1,894: [GC (Allocation Failure) 756029K->263420K(2029056K), >>> > >> 0,0168112 >>> > >> > >> secs] >>> > >> > >> >>> > >> > >> BK 4.5 + throttle = 5000 + CMS + v3 protocol >>> > >> > >> >>> > >> > >> #0 Total wall clock time: 248.0 ms, total callbacks time: >>> 102307 >>> > ms, >>> > >> > >> entry size 0,034 MB -> 102,31 ms per entry (latency),0,2 ms per >>> > entry >>> > >> > >> (throughput) 137,8 MB/s throughput >>> > >> > >> #1 Total wall clock time: 205.0 ms, total callbacks time: >>> 12282 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 12,28 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 166,7 MB/s throughput >>> > >> > >> #2 Total wall clock time: 204.0 ms, total callbacks time: 6920 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 6,92 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 167,5 MB/s throughput >>> > >> > >> #3 Total wall clock time: 221.0 ms, total callbacks time: >>> 13589 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 13,59 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 154,7 MB/s throughput >>> > >> > >> #4 Total wall clock time: 204.0 ms, total callbacks time: 6023 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 6,02 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 167,5 MB/s throughput >>> > >> > >> #5 Total wall clock time: 205.0 ms, total callbacks time: 6350 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 6,35 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 166,7 MB/s throughput >>> > >> > >> #6 Total wall clock time: 205.0 ms, total callbacks time: 7849 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 7,85 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 166,7 MB/s throughput >>> > >> > >> #7 Total wall clock time: 204.0 ms, total callbacks time: 6443 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 6,44 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 167,5 MB/s throughput >>> > >> > >> #8 Total wall clock time: 206.0 ms, total callbacks time: 7009 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 7,01 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 165,9 MB/s throughput >>> > >> > >> #9 Total wall clock time: 205.0 ms, total callbacks time: 6150 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 6,15 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 166,7 MB/s throughput >>> > >> > >> >>> > >> > >> Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for linux-amd64 >>> JRE >>> > >> > >> (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > gcc >>> > >> > 4.3.0 >>> > >> > >> 20080428 (Red Hat 4.3.0-8) >>> > >> > >> Memory: 4k page, physical 32870636k(3247600k free), swap >>> > >> > >> 15622140k(15460604k free) >>> > >> > >> CommandLine flags: -XX:+CMSIncrementalMode >>> > >> > -XX:InitialHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> > >> <(214)%20748-3648> -XX:MaxHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> >>> > >> > >> -XX:MaxNewSize=697933824 -XX:MaxTenuringThreshold=6 >>> > >> > -XX:NewSize=697933824 >>> > >> > >> -XX:OldPLABSize=16 -XX:OldSize=1395867648 -XX:+PrintGC >>> > >> > >> -XX:+PrintGCTimeStamps -XX:+UseCompressedClassPointers >>> > >> > >> -XX:+UseCompressedOops -XX:+UseConcMarkSweepGC -XX:+UseParNewGC >>> > >> > >> 0,568: [GC (Allocation Failure) 545344K->8497K(2029056K), >>> > 0,0060302 >>> > >> > secs] >>> > >> > >> 1,059: [GC (Allocation Failure) 553841K->112138K(2029056K), >>> > >> 0,0206230 >>> > >> > >> secs] >>> > >> > >> 1,080: [GC (CMS Initial Mark) 117602K(2029056K), 0,0013282 >>> secs] >>> > >> > >> 1,561: [GC (Allocation Failure) 654247K->189231K(2029056K), >>> > >> 0,0379235 >>> > >> > >> secs] >>> > >> > >> 2,079: [GC (Allocation Failure) 731215K->185468K(2029056K), >>> > >> 0,0107924 >>> > >> > >> secs] >>> > >> > >> 2,320: [GC (CMS Final Remark) 431925K(2029056K), 0,0076070 >>> secs] >>> > >> > >> 2,635: [GC (Allocation Failure) 730812K->217376K(2029056K), >>> > >> 0,0136162 >>> > >> > >> secs] >>> > >> > >> >>> > >> > >> >>> > >> > >> BK 4.4 + throttle = 5000 + CMS + v3 protocol >>> > >> > >> >>> > >> > >> #0 Total wall clock time: 208.0 ms, total callbacks time: >>> 55274 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 55,27 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 164,3 MB/s throughput >>> > >> > >> #1 Total wall clock time: 207.0 ms, total callbacks time: >>> 11848 ms, >>> > >> > entry >>> > >> > >> size 0,034 MB -> 11,85 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 165,1 MB/s throughput >>> > >> > >> #2 Total wall clock time: 208.0 ms, total callbacks time: 9442 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 9,44 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 164,3 MB/s throughput >>> > >> > >> #3 Total wall clock time: 204.0 ms, total callbacks time: 6739 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 6,74 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 167,5 MB/s throughput >>> > >> > >> #4 Total wall clock time: 205.0 ms, total callbacks time: 7546 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 7,55 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 166,7 MB/s throughput >>> > >> > >> #5 Total wall clock time: 204.0 ms, total callbacks time: 6594 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 6,59 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 167,5 MB/s throughput >>> > >> > >> #6 Total wall clock time: 205.0 ms, total callbacks time: 5885 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 5,89 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 166,7 MB/s throughput >>> > >> > >> #7 Total wall clock time: 204.0 ms, total callbacks time: 7722 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 7,72 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 167,5 MB/s throughput >>> > >> > >> #8 Total wall clock time: 224.0 ms, total callbacks time: 5968 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 5,97 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 152,6 MB/s throughput >>> > >> > >> #9 Total wall clock time: 209.0 ms, total callbacks time: 6731 >>> ms, >>> > >> entry >>> > >> > >> size 0,034 MB -> 6,73 ms per entry (latency),0,2 ms per entry >>> > >> > (throughput) >>> > >> > >> 163,5 MB/s throughput >>> > >> > >> >>> > >> > >> gc.log >>> > >> > >> Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for linux-amd64 >>> JRE >>> > >> > >> (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > gcc >>> > >> > 4.3.0 >>> > >> > >> 20080428 (Red Hat 4.3.0-8) >>> > >> > >> Memory: 4k page, physical 32870636k(3291888k free), swap >>> > >> > >> 15622140k(15460604k free) >>> > >> > >> CommandLine flags: -XX:+CMSIncrementalMode >>> > >> > -XX:InitialHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> > >> <(214)%20748-3648> -XX:MaxHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> >>> > >> > >> -XX:MaxNewSize=697933824 -XX:MaxTenuringThreshold=6 >>> > >> > -XX:NewSize=697933824 >>> > >> > >> -XX:OldPLABSize=16 -XX:OldSize=1395867648 -XX:+PrintGC >>> > >> > >> -XX:+PrintGCTimeStamps -XX:+UseCompressedClassPointers >>> > >> > >> -XX:+UseCompressedOops -XX:+UseConcMarkSweepGC -XX:+UseParNewGC >>> > >> > >> 0,554: [GC (Allocation Failure) 545344K->8022K(2029056K), >>> > 0,0055210 >>> > >> > secs] >>> > >> > >> 0,890: [GC (Allocation Failure) 553366K->93114K(2029056K), >>> > 0,0177003 >>> > >> > >> secs] >>> > >> > >> 0,909: [GC (CMS Initial Mark) 97210K(2029056K), 0,0011810 >>> secs] >>> > >> > >> 1,204: [GC (Allocation Failure) 638458K->102278K(2029056K), >>> > >> 0,0181779 >>> > >> > >> secs] >>> > >> > >> 1,536: [GC (Allocation Failure) 645878K->103955K(2029056K), >>> > >> 0,0088187 >>> > >> > >> secs] >>> > >> > >> 1,679: [GC (CMS Final Remark) 353595K(2029056K), 0,0078553 >>> secs] >>> > >> > >> 1,858: [GC (Allocation Failure) 649299K->78654K(2029056K), >>> > 0,0064803 >>> > >> > >> secs] >>> > >> > >> 2,187: [GC (Allocation Failure) 623998K->120130K(2029056K), >>> > >> 0,0125856 >>> > >> > >> secs] >>> > >> > >> 2,200: [GC (CMS Initial Mark) 121879K(2029056K), 0,0003934 >>> secs] >>> > >> > >> 2,518: [GC (Allocation Failure) 665474K->193813K(2029056K), >>> > >> 0,0202701 >>> > >> > >> secs] >>> > >> > >> >>> > >> > >> >>> > >> > >> >>> > >> > >> >>> > >> > >>> >>> > >> > >>> > - using the v2 protocol brings huge improvements in the >>> usage of >>> > >> > memory >>> > >> > >>> > - if you want good "latency" for each entry you have to set >>> at >>> > >> least >>> > >> > >>> > throttle to 1000, but the throughput will be very lower >>> (from 30 >>> > >> MB/s >>> > >> > >>> vs >>> > >> > >>> > 300 MB/s on my disk) >>> > >> > >>> > >>> > >> > >>> >>> > >> > >>> What type of disk do you have? What is your filesystem mount >>> > >> options? >>> > >> > >>> >>> > >> > >> >>> > >> > >> Disk type: SSD >>> > >> > >> this is fstab line: >>> > >> > >> /dev/mapper/Ssd-Home /home ext4 >>> > >> > >> defaults,discard 1 2 >>> > >> > >> >>> > >> > >> uname -a >>> > >> > >> Linux DNA101PC193.diennea.lan 4.11.5-100.fc24.x86_64 #1 SMP >>> Wed Jun >>> > >> 14 >>> > >> > >> 17:21:39 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux >>> > >> > >> >>> > >> > >> >>> > >> > >> >>> > >> > >>> >>> > >> > >>> When you did the test, how did GC activities look like when >>> > setting >>> > >> > >>> throttle to be more than 1000? >>> > >> > >>> >>> > >> > >> >>> > >> > >> I have added new results, see above >>> > >> > >> >>> > >> > >> >>> > >> > >>> >>> > >> > >>> I think the latency looked "bad" when throttle was more than >>> 1000, >>> > >> is >>> > >> > >>> because of GC. Did you have that test results? >>> > >> > >>> >>> > >> > >> >>> > >> > >> >>> > >> > >> I apologize, in the below results when I did not write >>> 'throttle = >>> > >> 0" I >>> > >> > >> meant throttle = 1000 >>> > >> > >> >>> > >> > >> Did you take a look an the code of the bench ? Maybe a double >>> check >>> > >> > would >>> > >> > >> be useful, many times badly written benchmarks are not useful >>> at >>> > all >>> > >> > >> >>> > >> > >> Thank you >>> > >> > >> -- Enrico >>> > >> > >> >>> > >> > >> >>> > >> > >> >>> > >> > >>> >>> > >> > >>> >>> > >> > >>> > below the results of my simple bench >>> > >> > >>> > >>> > >> > >>> > Enrico >>> > >> > >>> > >>> > >> > >>> > Bench code: >>> > >> > >>> > >>> > >> > >>> https://github.com/eolivelli/bookkeepers-benchs/blob/ >>> > >> > master/src/test/java/ >>> > >> > >>> > BookKeeperWriteTest.java >>> > >> > >>> > >>> > >> > >>> > Results: >>> > >> > >>> > with 4.5.0-SNAPSHOT and v2 protocol - G1 GC >>> > >> > >>> > >>> > >> > >>> > #0 Total wall clock time: 1000.0 ms, total callbacks time: >>> 8460 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 8,46 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,2 MB/s throughput >>> > >> > >>> > #1 Total wall clock time: 1005.0 ms, total callbacks time: >>> 4529 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,53 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #2 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4293 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,29 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #3 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4317 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,32 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #4 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4553 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,55 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #5 Total wall clock time: 1001.0 ms, total callbacks time: >>> 4448 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,45 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #6 Total wall clock time: 1004.0 ms, total callbacks time: >>> 4449 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,45 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #7 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4504 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,50 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #8 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4290 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,29 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #9 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4441 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,44 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > >>> > >> > >>> > gc.log >>> > >> > >>> > Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for >>> linux-amd64 >>> > JRE >>> > >> > >>> > (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > >> gcc >>> > >> > >>> 4.3.0 >>> > >> > >>> > 20080428 (Red Hat 4.3.0-8) >>> > >> > >>> > Memory: 4k page, physical 32870636k(9153868k free), swap >>> > >> > >>> > 15622140k(15464700k free) >>> > >> > >>> > CommandLine flags: -XX:InitialHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > >> <%28214%29%20748-3648> <(214)%20748-3648> >>> > >> > >>> > -XX:MaxHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> -XX:+PrintGC >>> > >> > >>> -XX:+PrintGCTimeStamps >>> > >> > >>> > -XX:+UseCompressedClassPointers -XX:+UseCompressedOops >>> > >> -XX:+UseG1GC >>> > >> > >>> > 1,988: [GC pause (G1 Evacuation Pause) (young) >>> 146M->59M(2048M), >>> > >> > >>> 0,0104300 >>> > >> > >>> > secs] >>> > >> > >>> > >>> > >> > >>> > >>> > >> > >>> > Results, with 4.5.0-SNAPSHOT and v3 protocol - G1 GC >>> > >> > >>> > #0 Total wall clock time: 1001.0 ms, total callbacks time: >>> 11800 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 11,80 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #1 Total wall clock time: 1001.0 ms, total callbacks time: >>> 4585 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,59 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #2 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4458 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,46 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #3 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4471 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,47 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #4 Total wall clock time: 1004.0 ms, total callbacks time: >>> 4473 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,47 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #5 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4477 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,48 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #6 Total wall clock time: 1007.0 ms, total callbacks time: >>> 4424 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,42 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 33,9 MB/s throughput >>> > >> > >>> > #7 Total wall clock time: 1005.0 ms, total callbacks time: >>> 4576 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,58 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #8 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4447 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,45 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #9 Total wall clock time: 1007.0 ms, total callbacks time: >>> 4501 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,50 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 33,9 MB/s throughput >>> > >> > >>> > >>> > >> > >>> > gc.log >>> > >> > >>> > Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for >>> linux-amd64 >>> > JRE >>> > >> > >>> > (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > >> gcc >>> > >> > >>> 4.3.0 >>> > >> > >>> > 20080428 (Red Hat 4.3.0-8) >>> > >> > >>> > Memory: 4k page, physical 32870636k(9042512k free), swap >>> > >> > >>> > 15622140k(15464700k free) >>> > >> > >>> > CommandLine flags: -XX:InitialHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > >> <%28214%29%20748-3648> <(214)%20748-3648> >>> > >> > >>> > -XX:MaxHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> -XX:+PrintGC >>> > >> > >>> -XX:+PrintGCTimeStamps >>> > >> > >>> > -XX:+UseCompressedClassPointers -XX:+UseCompressedOops >>> > >> -XX:+UseG1GC >>> > >> > >>> > 0,830: [GC pause (G1 Evacuation Pause) (young) >>> 118M->33M(2048M), >>> > >> > >>> 0,0116376 >>> > >> > >>> > secs] >>> > >> > >>> > 1,372: [GC pause (G1 Evacuation Pause) (young) >>> 162M->73M(2048M), >>> > >> > >>> 0,0055103 >>> > >> > >>> > secs] >>> > >> > >>> > 2,172: [GC pause (G1 Evacuation Pause) (young) >>> 227M->99M(2048M), >>> > >> > >>> 0,0023962 >>> > >> > >>> > secs] >>> > >> > >>> > 10,358: [GC pause (G1 Evacuation Pause) (young) >>> > >> 1620M->122M(2048M), >>> > >> > >>> > 0,0026519 secs] >>> > >> > >>> > 11,676: [GC pause (Metadata GC Threshold) (young) >>> (initial-mark) >>> > >> > >>> > 242M->114M(2048M), 0,0021797 secs] >>> > >> > >>> > 11,678: [GC concurrent-root-region-scan-start] >>> > >> > >>> > 11,679: [GC concurrent-root-region-scan-end, 0,0007421 >>> secs] >>> > >> > >>> > 11,679: [GC concurrent-mark-start] >>> > >> > >>> > 11,684: [GC concurrent-mark-end, 0,0046645 secs] >>> > >> > >>> > 11,684: [GC remark, 0,0027234 secs] >>> > >> > >>> > 11,687: [GC cleanup 115M->111M(2048M), 0,0008957 secs] >>> > >> > >>> > 11,688: [GC concurrent-cleanup-start] >>> > >> > >>> > 11,688: [GC concurrent-cleanup-end, 0,0000070 secs] >>> > >> > >>> > >>> > >> > >>> > >>> > >> > >>> > With 4.4.0 - v3 protocol - G1 GC >>> > >> > >>> > #0 Total wall clock time: 1001.0 ms, total callbacks time: >>> 6723 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 6,72 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #1 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4495 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,50 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #2 Total wall clock time: 1001.0 ms, total callbacks time: >>> 4406 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,41 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #3 Total wall clock time: 1005.0 ms, total callbacks time: >>> 4457 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,46 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #4 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4388 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,39 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #5 Total wall clock time: 1004.0 ms, total callbacks time: >>> 4451 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,45 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #6 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4574 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,57 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #7 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4523 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,52 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #8 Total wall clock time: 1004.0 ms, total callbacks time: >>> 4450 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,45 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #9 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4542 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,54 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > >>> > >> > >>> > gc.log >>> > >> > >>> > Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for >>> linux-amd64 >>> > JRE >>> > >> > >>> > (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > >> gcc >>> > >> > >>> 4.3.0 >>> > >> > >>> > 20080428 (Red Hat 4.3.0-8) >>> > >> > >>> > Memory: 4k page, physical 32870636k(8931792k free), swap >>> > >> > >>> > 15622140k(15464700k free) >>> > >> > >>> > CommandLine flags: -XX:InitialHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > >> <%28214%29%20748-3648> <(214)%20748-3648> >>> > >> > >>> > -XX:MaxHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> -XX:+PrintGC >>> > >> > >>> -XX:+PrintGCTimeStamps >>> > >> > >>> > -XX:+UseCompressedClassPointers -XX:+UseCompressedOops >>> > >> -XX:+UseG1GC >>> > >> > >>> > 0,750: [GC pause (G1 Evacuation Pause) (young) >>> 106M->14M(2048M), >>> > >> > >>> 0,0070948 >>> > >> > >>> > secs] >>> > >> > >>> > 1,089: [GC pause (G1 Evacuation Pause) (young) >>> 127M->21M(2048M), >>> > >> > >>> 0,0038837 >>> > >> > >>> > secs] >>> > >> > >>> > 1,608: [GC pause (G1 Evacuation Pause) (young) >>> 193M->41M(2048M), >>> > >> > >>> 0,0039903 >>> > >> > >>> > secs] >>> > >> > >>> > 3,745: [GC pause (G1 Evacuation Pause) (young) >>> 733M->49M(2048M), >>> > >> > >>> 0,0046991 >>> > >> > >>> > secs] >>> > >> > >>> > 7,990: [GC pause (G1 Evacuation Pause) (young) >>> > 1423M->65M(2048M), >>> > >> > >>> 0,0052844 >>> > >> > >>> > secs] >>> > >> > >>> > >>> > >> > >>> > >>> > >> > >>> > >>> > >> > >>> > with 4.4 - v3 protocol Parallel GC >>> > >> > >>> > >>> > >> > >>> > #0 Total wall clock time: 999.0 ms, total callbacks time: >>> 6007 >>> > ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 6,01 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,2 MB/s throughput >>> > >> > >>> > #1 Total wall clock time: 1001.0 ms, total callbacks time: >>> 4813 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,81 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #2 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4580 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,58 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #3 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4349 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,35 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #4 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4456 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,46 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #5 Total wall clock time: 1006.0 ms, total callbacks time: >>> 4504 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,50 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #6 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4387 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,39 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #7 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4643 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,64 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #8 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4548 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,55 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #9 Total wall clock time: 1001.0 ms, total callbacks time: >>> 4633 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,63 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > >>> > >> > >>> > gc.log >>> > >> > >>> > Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for >>> linux-amd64 >>> > JRE >>> > >> > >>> > (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > >> gcc >>> > >> > >>> 4.3.0 >>> > >> > >>> > 20080428 (Red Hat 4.3.0-8) >>> > >> > >>> > Memory: 4k page, physical 32870636k(8877776k free), swap >>> > >> > >>> > 15622140k(15464700k free) >>> > >> > >>> > CommandLine flags: -XX:InitialHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > >> <%28214%29%20748-3648> <(214)%20748-3648> >>> > >> > >>> > -XX:MaxHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> -XX:+PrintGC >>> > >> > >>> -XX:+PrintGCTimeStamps >>> > >> > >>> > -XX:+UseCompressedClassPointers -XX:+UseCompressedOops >>> > >> > >>> -XX:+UseParallelGC >>> > >> > >>> > 0,603: [GC (Allocation Failure) 524800K->8488K(2010112K), >>> > >> 0,0056746 >>> > >> > >>> secs] >>> > >> > >>> > 1,996: [GC (Allocation Failure) 533268K->181534K(2010112K), >>> > >> > 0,0248460 >>> > >> > >>> > secs] >>> > >> > >>> > 3,475: [GC (Allocation Failure) 703337K->237612K(2010112K), >>> > >> > 0,0192195 >>> > >> > >>> > secs] >>> > >> > >>> > 4,963: [GC (Allocation Failure) 762412K->212913K(2010112K), >>> > >> > 0,0085357 >>> > >> > >>> > secs] >>> > >> > >>> > 6,473: [GC (Allocation Failure) 737684K->192597K(1951232K), >>> > >> > 0,0065437 >>> > >> > >>> > secs] >>> > >> > >>> > 8,019: [GC (Allocation Failure) 704597K->319617K(1863680K), >>> > >> > 0,0189275 >>> > >> > >>> > secs] >>> > >> > >>> > 9,008: [GC (Allocation Failure) 651905K->315463K(1853952K), >>> > >> > 0,0121369 >>> > >> > >>> > secs] >>> > >> > >>> > 9,997: [GC (Allocation Failure) 647729K->418132K(1848832K), >>> > >> > 0,0222260 >>> > >> > >>> > secs] >>> > >> > >>> > 10,742: [GC (Allocation Failure) >>> 679764K->340097K(1878528K), >>> > >> > 0,0111347 >>> > >> > >>> > secs] >>> > >> > >>> > >>> > >> > >>> > >>> > >> > >>> > with 4.5 - v2 protocol Parallel GC >>> > >> > >>> > >>> > >> > >>> > #0 Total wall clock time: 1004.0 ms, total callbacks time: >>> 8030 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 8,03 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #1 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4394 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,39 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #2 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4417 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,42 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #3 Total wall clock time: 1005.0 ms, total callbacks time: >>> 4362 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,36 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #4 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4435 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,44 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #5 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4489 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,49 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #6 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4346 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,35 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #7 Total wall clock time: 1004.0 ms, total callbacks time: >>> 4474 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,47 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #8 Total wall clock time: 1005.0 ms, total callbacks time: >>> 4436 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,44 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #9 Total wall clock time: 1001.0 ms, total callbacks time: >>> 4322 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,32 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > >>> > >> > >>> > gc.log >>> > >> > >>> > Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for >>> linux-amd64 >>> > JRE >>> > >> > >>> > (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > >> gcc >>> > >> > >>> 4.3.0 >>> > >> > >>> > 20080428 (Red Hat 4.3.0-8) >>> > >> > >>> > Memory: 4k page, physical 32870636k(8951980k free), swap >>> > >> > >>> > 15622140k(15464700k free) >>> > >> > >>> > CommandLine flags: -XX:InitialHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > >> <%28214%29%20748-3648> <(214)%20748-3648> >>> > >> > >>> > -XX:MaxHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> -XX:+PrintGC >>> > >> > >>> -XX:+PrintGCTimeStamps >>> > >> > >>> > -XX:+UseCompressedClassPointers -XX:+UseCompressedOops >>> > >> > >>> -XX:+UseParallelGC >>> > >> > >>> > 0,583: [GC (Allocation Failure) 524800K->8921K(2010112K), >>> > >> 0,0054470 >>> > >> > >>> secs] >>> > >> > >>> > 6,397: [GC (Allocation Failure) 533721K->178956K(2010112K), >>> > >> > 0,0306493 >>> > >> > >>> secs >>> > >> > >>> > >>> > >> > >>> > >>> > >> > >>> > with 4.5 - v3 protocol Parallel GC >>> > >> > >>> > >>> > >> > >>> > #0 Total wall clock time: 1002.0 ms, total callbacks time: >>> 10679 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 10,68 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #1 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4802 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,80 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #2 Total wall clock time: 1003.0 ms, total callbacks time: >>> 4479 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,48 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #3 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4726 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,73 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #4 Total wall clock time: 1007.0 ms, total callbacks time: >>> 4393 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,39 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 33,9 MB/s throughput >>> > >> > >>> > #5 Total wall clock time: 1006.0 ms, total callbacks time: >>> 4619 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,62 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #6 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4346 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,35 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #7 Total wall clock time: 1002.0 ms, total callbacks time: >>> 4402 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,40 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,1 MB/s throughput >>> > >> > >>> > #8 Total wall clock time: 1004.0 ms, total callbacks time: >>> 4487 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,49 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 34,0 MB/s throughput >>> > >> > >>> > #9 Total wall clock time: 1007.0 ms, total callbacks time: >>> 4315 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 4,32 ms per entry (latency),1,0 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 33,9 MB/s throughput >>> > >> > >>> > >>> > >> > >>> > gc.log >>> > >> > >>> > >>> > >> > >>> > Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for >>> linux-amd64 >>> > JRE >>> > >> > >>> > (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > >> gcc >>> > >> > >>> 4.3.0 >>> > >> > >>> > 20080428 (Red Hat 4.3.0-8) >>> > >> > >>> > Memory: 4k page, physical 32870636k(8921388k free), swap >>> > >> > >>> > 15622140k(15464700k free) >>> > >> > >>> > CommandLine flags: -XX:InitialHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > >> <%28214%29%20748-3648> <(214)%20748-3648> >>> > >> > >>> > -XX:MaxHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> -XX:+PrintGC >>> > >> > >>> -XX:+PrintGCTimeStamps >>> > >> > >>> > -XX:+UseCompressedClassPointers -XX:+UseCompressedOops >>> > >> > >>> -XX:+UseParallelGC >>> > >> > >>> > 0,563: [GC (Allocation Failure) 524800K->8935K(2010112K), >>> > >> 0,0055378 >>> > >> > >>> secs] >>> > >> > >>> > 1,936: [GC (Allocation Failure) 533735K->187494K(2010112K), >>> > >> > 0,0281195 >>> > >> > >>> > secs] >>> > >> > >>> > 3,917: [GC (Allocation Failure) 712294K->275491K(2010112K), >>> > >> > 0,0298168 >>> > >> > >>> > secs] >>> > >> > >>> > 6,385: [GC (Allocation Failure) 798141K->394430K(2010112K), >>> > >> > 0,0279730 >>> > >> > >>> > secs] >>> > >> > >>> > 8,934: [GC (Allocation Failure) 919230K->394530K(2008576K), >>> > >> > 0,0127794 >>> > >> > >>> > secs] >>> > >> > >>> > 11,634: [GC (Metadata GC Threshold) >>> 811154K->348997K(1868288K), >>> > >> > >>> 0,0080161 >>> > >> > >>> > secs] >>> > >> > >>> > 11,642: [Full GC (Metadata GC Threshold) >>> > >> 348997K->39874K(1868288K), >>> > >> > >>> > 0,0247462 secs] >>> > >> > >>> > >>> > >> > >>> > >>> > >> > >>> > 4.5 v3 protocol parallel GC throttle = 0 >>> > >> > >>> > >>> > >> > >>> > #0 Total wall clock time: 334.0 ms, total callbacks time: >>> 267444 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 267,44 ms per entry (latency),0,3 ms per >>> entry >>> > >> > >>> > (throughput) 102,3 MB/s throughput >>> > >> > >>> > #1 Total wall clock time: 189.0 ms, total callbacks time: >>> 154428 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 154,43 ms per entry (latency),0,2 ms per >>> entry >>> > >> > >>> > (throughput) 180,8 MB/s throughput >>> > >> > >>> > #2 Total wall clock time: 136.0 ms, total callbacks time: >>> 103012 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 103,01 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> > (throughput) 251,3 MB/s throughput >>> > >> > >>> > #3 Total wall clock time: 156.0 ms, total callbacks time: >>> 113315 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 113,32 ms per entry (latency),0,2 ms per >>> entry >>> > >> > >>> > (throughput) 219,1 MB/s throughput >>> > >> > >>> > #4 Total wall clock time: 110.0 ms, total callbacks time: >>> 79296 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 79,30 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 310,7 MB/s throughput >>> > >> > >>> > #5 Total wall clock time: 104.0 ms, total callbacks time: >>> 71213 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 71,21 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 328,7 MB/s throughput >>> > >> > >>> > #6 Total wall clock time: 161.0 ms, total callbacks time: >>> 72447 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 72,45 ms per entry (latency),0,2 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 212,3 MB/s throughput >>> > >> > >>> > #7 Total wall clock time: 103.0 ms, total callbacks time: >>> 82783 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 82,78 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 331,8 MB/s throughput >>> > >> > >>> > #8 Total wall clock time: 138.0 ms, total callbacks time: >>> 106086 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 106,09 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> > (throughput) 247,7 MB/s throughput >>> > >> > >>> > #9 Total wall clock time: 118.0 ms, total callbacks time: >>> 77750 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 77,75 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 289,7 MB/s throughput >>> > >> > >>> > >>> > >> > >>> > Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for >>> linux-amd64 >>> > JRE >>> > >> > >>> > (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > >> gcc >>> > >> > >>> 4.3.0 >>> > >> > >>> > 20080428 (Red Hat 4.3.0-8) >>> > >> > >>> > Memory: 4k page, physical 32870636k(8858832k free), swap >>> > >> > >>> > 15622140k(15464700k free) >>> > >> > >>> > CommandLine flags: -XX:InitialHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > >> <%28214%29%20748-3648> <(214)%20748-3648> >>> > >> > >>> > -XX:MaxHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> -XX:+PrintGC >>> > >> > >>> -XX:+PrintGCTimeStamps >>> > >> > >>> > -XX:+UseCompressedClassPointers -XX:+UseCompressedOops >>> > >> > >>> -XX:+UseParallelGC >>> > >> > >>> > 0,660: [GC (Allocation Failure) 524800K->8955K(2010112K), >>> > >> 0,0061442 >>> > >> > >>> secs] >>> > >> > >>> > 1,288: [GC (Allocation Failure) 533726K->191538K(2010112K), >>> > >> > 0,0329663 >>> > >> > >>> > secs] >>> > >> > >>> > 1,634: [GC (Allocation Failure) 716338K->349468K(2010112K), >>> > >> > 0,0508922 >>> > >> > >>> > secs] >>> > >> > >>> > 1,942: [GC (Allocation Failure) 874268K->671717K(2010112K), >>> > >> > 0,0609749 >>> > >> > >>> > secs] >>> > >> > >>> > 2,266: [GC (Allocation Failure) >>> 1196517K->781335K(2010112K), >>> > >> > 0,0320305 >>> > >> > >>> > secs] >>> > >> > >>> > >>> > >> > >>> > 4.5 v2protocol throttle = 0 G1 GC >>> > >> > >>> > >>> > >> > >>> > #0 Total wall clock time: 200.0 ms, total callbacks time: >>> 173682 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 173,68 ms per entry (latency),0,2 ms per >>> entry >>> > >> > >>> > (throughput) 170,9 MB/s throughput >>> > >> > >>> > #1 Total wall clock time: 128.0 ms, total callbacks time: >>> 89987 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 89,99 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 267,0 MB/s throughput >>> > >> > >>> > #2 Total wall clock time: 117.0 ms, total callbacks time: >>> 86411 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 86,41 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 292,1 MB/s throughput >>> > >> > >>> > #3 Total wall clock time: 95.0 ms, total callbacks time: >>> 64054 >>> > ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 64,05 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 359,8 MB/s throughput >>> > >> > >>> > #4 Total wall clock time: 92.0 ms, total callbacks time: >>> 60863 >>> > ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 60,86 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 371,5 MB/s throughput >>> > >> > >>> > #5 Total wall clock time: 92.0 ms, total callbacks time: >>> 62026 >>> > ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 62,03 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 371,5 MB/s throughput >>> > >> > >>> > #6 Total wall clock time: 93.0 ms, total callbacks time: >>> 65033 >>> > ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 65,03 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 367,5 MB/s throughput >>> > >> > >>> > #7 Total wall clock time: 88.0 ms, total callbacks time: >>> 59851 >>> > ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 59,85 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 388,4 MB/s throughput >>> > >> > >>> > #8 Total wall clock time: 93.0 ms, total callbacks time: >>> 61816 >>> > ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 61,82 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 367,5 MB/s throughput >>> > >> > >>> > #9 Total wall clock time: 93.0 ms, total callbacks time: >>> 70397 >>> > ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 70,40 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 367,5 MB/s throughput >>> > >> > >>> > >>> > >> > >>> > >>> > >> > >>> > Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for >>> linux-amd64 >>> > JRE >>> > >> > >>> > (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > >> gcc >>> > >> > >>> 4.3.0 >>> > >> > >>> > 20080428 (Red Hat 4.3.0-8) >>> > >> > >>> > Memory: 4k page, physical 32870636k(8894828k free), swap >>> > >> > >>> > 15622140k(15464700k free) >>> > >> > >>> > CommandLine flags: -XX:InitialHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > >> <%28214%29%20748-3648> <(214)%20748-3648> >>> > >> > >>> > -XX:MaxHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> -XX:+PrintGC >>> > >> > >>> -XX:+PrintGCTimeStamps >>> > >> > >>> > -XX:+UseCompressedClassPointers -XX:+UseCompressedOops >>> > >> -XX:+UseG1GC >>> > >> > >>> > 1,078: [GC pause (G1 Evacuation Pause) (young) >>> 150M->65M(2048M), >>> > >> > >>> 0,0138100 >>> > >> > >>> > secs] >>> > >> > >>> > >>> > >> > >>> > bk 4.5 v3 protocol G1 GC throttle = 0 >>> > >> > >>> > >>> > >> > >>> > #0 Total wall clock time: 275.0 ms, total callbacks time: >>> 238043 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 238,04 ms per entry (latency),0,3 ms per >>> entry >>> > >> > >>> > (throughput) 124,3 MB/s throughput >>> > >> > >>> > #1 Total wall clock time: 148.0 ms, total callbacks time: >>> 106877 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 106,88 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> > (throughput) 230,9 MB/s throughput >>> > >> > >>> > #2 Total wall clock time: 130.0 ms, total callbacks time: >>> 96448 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 96,45 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 262,9 MB/s throughput >>> > >> > >>> > #3 Total wall clock time: 118.0 ms, total callbacks time: >>> 78246 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 78,25 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 289,7 MB/s throughput >>> > >> > >>> > #4 Total wall clock time: 109.0 ms, total callbacks time: >>> 79110 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 79,11 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 313,6 MB/s throughput >>> > >> > >>> > #5 Total wall clock time: 124.0 ms, total callbacks time: >>> 86652 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 86,65 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 275,6 MB/s throughput >>> > >> > >>> > #6 Total wall clock time: 110.0 ms, total callbacks time: >>> 76729 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 76,73 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 310,7 MB/s throughput >>> > >> > >>> > #7 Total wall clock time: 110.0 ms, total callbacks time: >>> 80104 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 80,10 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 310,7 MB/s throughput >>> > >> > >>> > #8 Total wall clock time: 104.0 ms, total callbacks time: >>> 73514 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 73,51 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 328,7 MB/s throughput >>> > >> > >>> > #9 Total wall clock time: 102.0 ms, total callbacks time: >>> 74487 >>> > >> ms, >>> > >> > >>> entry >>> > >> > >>> > size 0,034 MB -> 74,49 ms per entry (latency),0,1 ms per >>> entry >>> > >> > >>> (throughput) >>> > >> > >>> > 335,1 MB/s throughput >>> > >> > >>> > >>> > >> > >>> > Java HotSpot(TM) 64-Bit Server VM (25.121-b13) for >>> linux-amd64 >>> > JRE >>> > >> > >>> > (1.8.0_121-b13), built on Dec 12 2016 16:36:53 by "java_re" >>> with >>> > >> gcc >>> > >> > >>> 4.3.0 >>> > >> > >>> > 20080428 (Red Hat 4.3.0-8) >>> > >> > >>> > Memory: 4k page, physical 32870636k(8958604k free), swap >>> > >> > >>> > 15622140k(15464700k free) >>> > >> > >>> > CommandLine flags: -XX:InitialHeapSize=2147483648 >>> <%28214%29%20748-3648> >>> > >> <%28214%29%20748-3648> <(214)%20748-3648> >>> > >> > >>> > -XX:MaxHeapSize=2147483648 <%28214%29%20748-3648> >>> <%28214%29%20748-3648> >>> > >> <(214)%20748-3648> -XX:+PrintGC >>> > >> > >>> -XX:+PrintGCTimeStamps >>> > >> > >>> > -XX:+UseCompressedClassPointers -XX:+UseCompressedOops >>> > >> -XX:+UseG1GC >>> > >> > >>> > 0,876: [GC pause (G1 Evacuation Pause) (young) >>> 102M->19M(2048M), >>> > >> > >>> 0,0107143 >>> > >> > >>> > secs] >>> > >> > >>> > 0,989: [GC pause (G1 Evacuation Pause) (young) >>> 152M->81M(2048M), >>> > >> > >>> 0,0074561 >>> > >> > >>> > secs] >>> > >> > >>> > 1,125: [GC pause (G1 Evacuation Pause) (young) >>> > 198M->108M(2048M), >>> > >> > >>> 0,0038296 >>> > >> > >>> > secs] >>> > >> > >>> > 1,286: [GC pause (G1 Evacuation Pause) (young) >>> > 306M->146M(2048M), >>> > >> > >>> 0,0034297 >>> > >> > >>> > secs] >>> > >> > >>> > >>> > >> > >>> > >>> > >> > >>> > >>> > >> > >>> > 2017-07-12 3:07 GMT+02:00 Sijie Guo <guosi...@gmail.com>: >>> > >> > >>> > >>> > >> > >>> > > On Wed, Jul 12, 2017 at 2:04 AM, Venkateswara Rao Jujjuri >>> < >>> > >> > >>> > > jujj...@gmail.com >>> > >> > >>> > > > wrote: >>> > >> > >>> > > >>> > >> > >>> > > > Enrico, let me try to paraphrase the issue. >>> > >> > >>> > > > >>> > >> > >>> > > > - With G1GC + Netty 4.1 is giving you roughly same perf >>> as >>> > >> prev >>> > >> > >>> > release. >>> > >> > >>> > > Is >>> > >> > >>> > > > that accurate statement? >>> > >> > >>> > > > But you are still seeing latency spikes with Netty 4.1?? >>> > >> > >>> > > >>> > >> > >>> > > >>> > >> > >>> > > >>> > >> > >>> > > >>> > >> > >>> > > >>> > >> > >>> > > > I did not fully >>> > >> > >>> > > > understand your sleep usecase. >>> > >> > >>> > > > How sleep is yielding better latency? >>> > >> > >>> > > > >>> > >> > >>> > > >>> > >> > >>> > > I think the "sleep(1)" in Enrico's benchmark is for >>> > throttling. >>> > >> It >>> > >> > is >>> > >> > >>> > same >>> > >> > >>> > > as setting 'throttle' value to 1000 in his test. >>> > >> > >>> > > >>> > >> > >>> > > - Sijie >>> > >> > >>> > > >>> > >> > >>> > > >>> > >> > >>> > > >>> > >> > >>> > > > >>> > >> > >>> > > > Thanks, >>> > >> > >>> > > > JV >>> > >> > >>> > > > >>> > >> > >>> > > > On Tue, Jul 11, 2017 at 8:27 AM, Enrico Olivelli < >>> > >> > >>> eolive...@gmail.com> >>> > >> > >>> > > > wrote: >>> > >> > >>> > > > >>> > >> > >>> > > > > Another interesting thing...during my profiling >>> activity I >>> > >> > gave a >>> > >> > >>> > > chance >>> > >> > >>> > > > to >>> > >> > >>> > > > > the old v2 protocol and activated the gc logs, as >>> expected >>> > >> the >>> > >> > >>> result >>> > >> > >>> > > is >>> > >> > >>> > > > > that with v2 protocol there is almost no GC activity >>> > during >>> > >> the >>> > >> > >>> > > benchmark >>> > >> > >>> > > > > -- Enrico >>> > >> > >>> > > > > >>> > >> > >>> > > > > 2017-07-11 12:07 GMT+02:00 Enrico Olivelli < >>> > >> > eolive...@gmail.com >>> > >> > >>> >: >>> > >> > >>> > > > > >>> > >> > >>> > > > > > >>> > >> > >>> > > > > > >>> > >> > >>> > > > > > 2017-07-11 11:04 GMT+02:00 Sijie Guo < >>> > guosi...@gmail.com >>> > >> >: >>> > >> > >>> > > > > > >>> > >> > >>> > > > > >> I think Netty4 requires more offheap memory. you >>> might >>> > >> need >>> > >> > to >>> > >> > >>> > tune >>> > >> > >>> > > > the >>> > >> > >>> > > > > >> JVM >>> > >> > >>> > > > > >> settings. I doubt that latency diff coming from >>> the JVM >>> > >> gc. >>> > >> > >>> > > > > >> >>> > >> > >>> > > > > >> A simple thing to verify that is to dump the gc >>> log by >>> > >> > adding >>> > >> > >>> " >>> > >> > >>> > > > > -Xloggc:" >>> > >> > >>> > > > > >> setting and compare the gc logs between versions. >>> > >> > >>> > > > > >> >>> > >> > >>> > > > > > >>> > >> > >>> > > > > > >>> > >> > >>> > > > > > Enabling G1 GC (-XX:+UseG1GC) apparently solves the >>> > >> > difference >>> > >> > >>> > > between >>> > >> > >>> > > > > 4.4 >>> > >> > >>> > > > > > and 4.5. >>> > >> > >>> > > > > > >>> > >> > >>> > > > > > And I a loop the bench (in order to have a warm JVM) >>> > >> numbers >>> > >> > >>> become >>> > >> > >>> > > > more >>> > >> > >>> > > > > > stable and similar to each other >>> > >> > >>> > > > > > >>> > >> > >>> > > > > > I have the "other issue" pending, the fact that >>> latency >>> > >> (time >>> > >> > >>> for >>> > >> > >>> > > > > > asynchAddEntry to complete) is really bad and >>> > >> unpredictable >>> > >> > >>> (from >>> > >> > >>> > 100 >>> > >> > >>> > > > ms >>> > >> > >>> > > > > to >>> > >> > >>> > > > > > 2000ms) >>> > >> > >>> > > > > > >>> > >> > >>> > > > > > and if I introduce a Thread.sleep(1) all the >>> callbacks >>> > >> > complete >>> > >> > >>> > > always >>> > >> > >>> > > > > > with success in < 10ms. This happens even w >> >> -- >> >> >> -- Enrico Olivelli >> > >
