What is up with that score for 32 threads?  That can’t possibly be correct.

Ralph

> On Feb 9, 2017, at 12:45 PM, Matt Sicker <boa...@gmail.com> wrote:
> 
> I ran the logback-perf repo on the same AWS instance. Here's the CSV data. It 
> appears as soon as more than one thread comes into play, log4j2 has better 
> scores.
> 
> "Benchmark","Mode","Threads","Samples","Score","Score Error (99.9%)","Unit"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j1File","thrpt",1,10,964.600470,279.139021,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2File","thrpt",1,10,1274.682156,6.179197,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2RAF","thrpt",1,10,1257.026405,32.898682,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.logbackFile","thrpt",1,10,1363.683525,41.884725,"ops/ms"
> "Benchmark","Mode","Threads","Samples","Score","Score Error (99.9%)","Unit"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j1File","thrpt",2,10,687.304803,13.266922,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2File","thrpt",2,10,1386.596198,207.305249,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2RAF","thrpt",2,10,1579.884762,24.098318,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.logbackFile","thrpt",2,10,953.138212,99.156775,"ops/ms"
> "Benchmark","Mode","Threads","Samples","Score","Score Error (99.9%)","Unit"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j1File","thrpt",4,10,670.442970,15.049614,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2File","thrpt",4,10,1218.543593,18.234077,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2RAF","thrpt",4,10,1309.092881,31.547936,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.logbackFile","thrpt",4,10,845.168355,24.547390,"ops/ms"
> "Benchmark","Mode","Threads","Samples","Score","Score Error (99.9%)","Unit"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j1File","thrpt",8,10,689.805339,7.415023,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2File","thrpt",8,10,1196.396592,19.360776,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2RAF","thrpt",8,10,1319.477318,10.601260,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.logbackFile","thrpt",8,10,816.608726,25.603234,"ops/ms"
> "Benchmark","Mode","Threads","Samples","Score","Score Error (99.9%)","Unit"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j1File","thrpt",16,10,687.623660,16.114008,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2File","thrpt",16,10,1203.649145,8.835115,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2RAF","thrpt",16,10,1266.241778,7.564414,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.logbackFile","thrpt",16,10,789.507183,9.866592,"ops/ms"
> "Benchmark","Mode","Threads","Samples","Score","Score Error (99.9%)","Unit"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j1File","thrpt",32,10,690.252411,11.587858,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2File","thrpt",32,10,1514185.478492,126804.168771,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2RAF","thrpt",32,10,1264.049209,28.309088,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.logbackFile","thrpt",32,10,754.828687,14.865909,"ops/ms"
> "Benchmark","Mode","Threads","Samples","Score","Score Error (99.9%)","Unit"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j1File","thrpt",64,10,670.498518,11.147198,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2File","thrpt",64,10,1293.301940,22.687086,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.log4j2RAF","thrpt",64,10,1380.527892,14.907542,"ops/ms"
> "ch.qos.logback.perf.FileAppenderBenchmark.logbackFile","thrpt",64,10,750.528159,11.356281,"ops/ms"
> 
> On 9 February 2017 at 13:02, Apache <ralph.go...@dslextreme.com 
> <mailto:ralph.go...@dslextreme.com>> wrote:
> You might try running Ceki’s benchmark project on AWS and publish those 
> numbers here. He also asked people to publish numbers on the Logback user’s 
> list so he can add them to his spreadsheet.
> 
> From your numbers and the numbers I’ve been getting, it is clear to me that 
> the SSDs in Apple’s MacBook’s are pretty awesome. From the hardware Remko is 
> listing I’d say his machine is about as old as my other MacBook except that 
> he has an SSD that is slightly faster than my hard drive.
> 
> Ralph
> 
>> On Feb 9, 2017, at 11:12 AM, Matt Sicker <boa...@gmail.com 
>> <mailto:boa...@gmail.com>> wrote:
>> 
>> Ran on an AWS instance (CentOS 7.2), cpuinfo says 8-core Intel(R) Xeon(R) 
>> CPU E5-2666 v3 @ 2.90GHz, not super sure about all the params involved in 
>> making the instance, but here's some data (same strangeness with MMF):
>> 
>> Benchmark                                         Mode  Samples     Score    
>>  Error   Units
>> o.a.l.l.p.j.FileAppenderBenchmark.julFile        thrpt       10    86.867 ±  
>>  4.502  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j1File     thrpt       10   671.156 ±  
>>  7.099  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2File     thrpt       10  1221.814 ±  
>> 22.130  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2MMF      thrpt       10  1178.407 ± 
>> 960.141  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2RAF      thrpt       10  1220.746 ±  
>> 34.421  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.logbackFile    thrpt       10   898.122 ±  
>>  8.128  ops/ms
>> 
>> On 9 February 2017 at 12:02, Matt Sicker <boa...@gmail.com 
>> <mailto:boa...@gmail.com>> wrote:
>> Run on a MacBook Pro (Retina, 15-inch, Mid 2015) 2.5 GHz Intel Core i7. Can 
>> find out more hardware specs if needed. I also noticed that the memory 
>> mapped file starts out fast and slows down over time (somewhat seen by the 
>> error value here).
>> 
>> Benchmark                                         Mode  Samples     Score    
>>  Error   Units
>> o.a.l.l.p.j.FileAppenderBenchmark.julFile        thrpt       10    96.540 ±  
>>  7.875  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j1File     thrpt       10   766.286 ±  
>> 11.461  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2File     thrpt       10  1787.620 ±  
>> 36.695  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2MMF      thrpt       10  1506.588 ± 
>> 956.354  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2RAF      thrpt       10  1934.966 ±  
>> 50.089  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.logbackFile    thrpt       10  1285.066 ±  
>> 12.674  ops/ms
>> 
>> On 9 February 2017 at 11:44, Remko Popma <remko.po...@gmail.com 
>> <mailto:remko.po...@gmail.com>> wrote:
>> My results on Windows 10 64-bit laptop (java 1.8.0_51 64bit), i5-3317u CPU @ 
>> 1.70GHz (dual core with hyperthreading for 4 virtual cores), SSD hard disk:
>> 
>> java -jar log4j-perf/target/benchmarks.jar ".*FileAppenderBenchmark.*" -f 1 
>> -wi 10 -i 20 -t 4 -tu ms
>> 
>> # Run complete. Total time: 00:03:58
>> 
>> Benchmark                                         Mode  Samples     Score    
>>  Error   Units
>> o.a.l.l.p.j.FileAppenderBenchmark.julFile        thrpt       20    37.646 ±  
>>  0.876  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j1File     thrpt       20   405.305 ±  
>>  6.596  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2File     thrpt       20   751.949 ±  
>> 16.055  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2MMF      thrpt       20  1250.666 ± 
>> 168.757  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2RAF      thrpt       20   728.743 ±  
>> 23.909  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.logbackFile    thrpt       20   676.926 ±  
>> 19.518  ops/ms
>> 
>> --------------------
>> Logback config without immediateFlush=false:
>> 
>> # Run complete. Total time: 00:03:44
>> 
>> Benchmark                                         Mode  Samples     Score    
>>  Error   Units
>> o.a.l.l.p.j.FileAppenderBenchmark.julFile        thrpt       20    37.949 ±  
>>  1.220  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j1File     thrpt       20   404.042 ±  
>>  8.450  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2File     thrpt       20   690.393 ± 
>> 115.537  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2MMF      thrpt       20  1221.681 ±  
>> 82.205  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2RAF      thrpt       20   823.059 ±  
>> 41.512  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.logbackFile    thrpt       20    83.352 ±  
>> 11.911  ops/ms
>> 
>> 
>> On Fri, Feb 10, 2017 at 1:05 AM, Mikael Ståldal <mikael.stal...@magine.com 
>> <mailto:mikael.stal...@magine.com>> wrote:
>> I guess that with a memory mapped file, you leave it to the OS to do the 
>> best it can, and you lose any direct control over how it is actually done.
>> 
>> On Thu, Feb 9, 2017 at 4:52 PM, Apache <ralph.go...@dslextreme.com 
>> <mailto:ralph.go...@dslextreme.com>> wrote:
>> On my Mac Pro with the slower external SSD I now got:
>> 
>> Benchmark                                         Mode  Samples     Score    
>>  Error   Units
>> o.a.l.l.p.j.FileAppenderBenchmark.julFile        thrpt       10    73.739 ±  
>>  0.740  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j1File     thrpt       10   683.129 ±  
>>  9.407  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2File     thrpt       10   991.293 ± 
>> 193.049  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2MMF      thrpt       10  3072.250 ±  
>> 63.475  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2RAF      thrpt       10  1056.256 ± 
>> 137.673  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.logbackFile    thrpt       10   784.723 ± 
>> 153.226  ops/ms
>> 
>> and on the same machine with the faster internal SSD I got:
>> 
>> Benchmark                                         Mode  Samples     Score    
>>  Error   Units
>> o.a.l.l.p.j.FileAppenderBenchmark.julFile        thrpt       10    74.661 ±  
>>  0.232  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j1File     thrpt       10   647.041 ±  
>>  2.994  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2File     thrpt       10  1333.887 ±  
>> 13.921  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2MMF      thrpt       10  3025.726 ± 
>> 210.414  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2RAF      thrpt       10  1433.620 ±  
>> 11.194  ops/ms
>> o.a.l.l.p.j.FileAppenderBenchmark.logbackFile    thrpt       10  1026.319 ±  
>> 13.347  ops/ms
>> 
>> I will continue to run this on a few other configurations. I think I would 
>> also like to add the async appenders/loggers to this test so that one can 
>> see all the various options. 
>> 
>> It is really quite interesting to me to see how the memory mapped appender 
>> behaves so differently from one machine to another. I don’t know under what 
>> circumstances I would recommend using it though.
>> 
>> Ralph
>> 
>> 
>>> On Feb 9, 2017, at 7:03 AM, Apache <ralph.go...@dslextreme.com 
>>> <mailto:ralph.go...@dslextreme.com>> wrote:
>>> 
>>> After modifying the configuration the new results on my laptop are:
>>> 
>>> Benchmark                                         Mode  Samples     Score   
>>>    Error   Units
>>> o.a.l.l.p.j.FileAppenderBenchmark.julFile        thrpt       10    92.580 ± 
>>>    3.698  ops/ms
>>> o.a.l.l.p.j.FileAppenderBenchmark.log4j1File     thrpt       10   828.707 ± 
>>>   55.006  ops/ms
>>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2File     thrpt       10  1647.230 ± 
>>>  125.682  ops/ms
>>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2MMF      thrpt       10  1465.002 ± 
>>> 1284.943  ops/ms
>>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2RAF      thrpt       10  1765.340 ± 
>>>  149.707  ops/ms
>>> o.a.l.l.p.j.FileAppenderBenchmark.logbackFile    thrpt       10  1192.594 ± 
>>>   57.777  ops/ms
>>> 
>>> I will try the other machines later and post those results.
>>> 
>>> Ralph
>>> 
>>> 
>>>> On Feb 9, 2017, at 5:22 AM, Apache <ralph.go...@dslextreme.com 
>>>> <mailto:ralph.go...@dslextreme.com>> wrote:
>>>> 
>>>> Ceki replied on twitter that the immediateFlush option is now a parameter 
>>>> of the appended, not the encoder, so it looks like the confit needs to be 
>>>> changed and the test rerun.
>>>> 
>>>> Ralph
>>>> 
>>>> On Feb 9, 2017, at 3:08 AM, Remko Popma <remko.po...@gmail.com 
>>>> <mailto:remko.po...@gmail.com>> wrote:
>>>> 
>>>>> FYI, The write and flush methods in BufferedOutputStream are also 
>>>>> synchronized, so we won't be able to do away with synchronization 
>>>>> completely. 
>>>>> 
>>>>> In OutputStreamManager we synchronize multiple methods but these are 
>>>>> nested calls. I thought reentrant synchronization had negligible overhead 
>>>>> but I haven't measured this myself. 
>>>>> 
>>>>> 
>>>>> Sent from my iPhone
>>>>> 
>>>>> On Feb 9, 2017, at 2:31, Apache <ralph.go...@dslextreme.com 
>>>>> <mailto:ralph.go...@dslextreme.com>> wrote:
>>>>> 
>>>>>> I’m pretty sure the problem we have is that a) we are synchronizing many 
>>>>>> methods and b) we are synchronizing more than just the write. 
>>>>>> Unfortunately, I can’t figure out how to reduce that based on how 
>>>>>> dispersed the code has gotten.
>>>>>> 
>>>>>> Ralph
>>>>>> 
>>>>>>> On Feb 8, 2017, at 10:14 AM, Apache <ralph.go...@dslextreme.com 
>>>>>>> <mailto:ralph.go...@dslextreme.com>> wrote:
>>>>>>> 
>>>>>>> I tried to modify FileManager to just use a BufferedOutputStream but 
>>>>>>> discovered I couldn’t as the layouts now require the ByteBuffer. 
>>>>>>> 
>>>>>>> Ralph
>>>>>>> 
>>>>>>>> On Feb 8, 2017, at 12:14 AM, Apache <ralph.go...@dslextreme.com 
>>>>>>>> <mailto:ralph.go...@dslextreme.com>> wrote:
>>>>>>>> 
>>>>>>>> The append method isn’t synchronized but the writeBytes method 
>>>>>>>> acquires a lock. His code is actually a lot simpler than ours in that 
>>>>>>>> it just uses a BufferedOutputStream and he only obtains the lock when 
>>>>>>>> he is writing to it.
>>>>>>>> 
>>>>>>>> Ralph
>>>>>>>> 
>>>>>>>>> On Feb 6, 2017, at 5:23 PM, Matt Sicker <boa...@gmail.com 
>>>>>>>>> <mailto:boa...@gmail.com>> wrote:
>>>>>>>>> 
>>>>>>>>> I'm not sure if I'm looking in the right place, but a major 
>>>>>>>>> difference now between Logback's appenders and Log4j's is that 
>>>>>>>>> Logback isn't synchronized on the append method.
>>>>>>>>> 
>>>>>>>>> On 6 February 2017 at 18:18, Matt Sicker <boa...@gmail.com 
>>>>>>>>> <mailto:boa...@gmail.com>> wrote:
>>>>>>>>> Is this something we can improve performance on by implementing a 
>>>>>>>>> file appender based on FileChannel or AsynchronousFileChannel instead 
>>>>>>>>> of OutputStream?
>>>>>>>>> 
>>>>>>>>> On 6 February 2017 at 17:50, Apache <ralph.go...@dslextreme.com 
>>>>>>>>> <mailto:ralph.go...@dslextreme.com>> wrote:
>>>>>>>>> Ceki has updated his numbers to include those reported on the mailing 
>>>>>>>>> list. 
>>>>>>>>> https://docs.google.com/spreadsheets/d/1cpb5D7qnyye4W0RTlHUnXedYK98catNZytYIu5D91m0/edit#gid=0
>>>>>>>>>  
>>>>>>>>> <https://docs.google.com/spreadsheets/d/1cpb5D7qnyye4W0RTlHUnXedYK98catNZytYIu5D91m0/edit#gid=0>
>>>>>>>>> 
>>>>>>>>> I haven’t run the tests with Logback 1.2-SNAPSHOT but my numbers for 
>>>>>>>>> my two MacBooks are at 
>>>>>>>>> https://docs.google.com/spreadsheets/d/1L67IhmUVvyLBWtC6iq0TMj-j0vrbKsUKWuZV0Nlqisk/edit?usp=sharing
>>>>>>>>>  
>>>>>>>>> <https://docs.google.com/spreadsheets/d/1L67IhmUVvyLBWtC6iq0TMj-j0vrbKsUKWuZV0Nlqisk/edit?usp=sharing>.
>>>>>>>>>  
>>>>>>>>> 
>>>>>>>>> Ralph
>>>>>>>>> 
>>>>>>>>>> On Feb 6, 2017, at 9:33 AM, Apache <ralph.go...@dslextreme.com 
>>>>>>>>>> <mailto:ralph.go...@dslextreme.com>> wrote:
>>>>>>>>>> 
>>>>>>>>>> Yes, that is still the standard approach most people use and is the 
>>>>>>>>>> only way to provide a head-to-head comparison against the logging 
>>>>>>>>>> frameworks.
>>>>>>>>>> 
>>>>>>>>>> Ralph
>>>>>>>>>> 
>>>>>>>>>>> On Feb 6, 2017, at 8:02 AM, Matt Sicker <boa...@gmail.com 
>>>>>>>>>>> <mailto:boa...@gmail.com>> wrote:
>>>>>>>>>>> 
>>>>>>>>>>> This is all in a synchronous appender, right? Either way, that's 
>>>>>>>>>>> rather interesting.
>>>>>>>>>>> 
>>>>>>>>>>> On 6 February 2017 at 07:54, Apache <ralph.go...@dslextreme.com 
>>>>>>>>>>> <mailto:ralph.go...@dslextreme.com>> wrote:
>>>>>>>>>>> Someone posted numbers on the Logback user’s list that match mine.  
>>>>>>>>>>> It shows Logback 1.1.9 was pretty terrible, 1.1.10 is somewhat 
>>>>>>>>>>> better and 1.2-SNAPSHOT is on par or slightly better than Log4j 2.
>>>>>>>>>>> 
>>>>>>>>>>> Ralph
>>>>>>>>>>> 
>>>>>>>>>>>> On Feb 5, 2017, at 3:25 PM, Matt Sicker <boa...@gmail.com 
>>>>>>>>>>>> <mailto:boa...@gmail.com>> wrote:
>>>>>>>>>>>> 
>>>>>>>>>>>> I think we need some comparisons on the log4j side: file appender 
>>>>>>>>>>>> with 256k buffer size, random access file appender with 256k 
>>>>>>>>>>>> buffer size (which appears to be the default), and memory mapped 
>>>>>>>>>>>> file appender. It'd be cool to see how these compose with async 
>>>>>>>>>>>> logging enabled in both log4j and logback.
>>>>>>>>>>>> 
>>>>>>>>>>>> On 5 February 2017 at 16:06, Apache <ralph.go...@dslextreme.com 
>>>>>>>>>>>> <mailto:ralph.go...@dslextreme.com>> wrote:
>>>>>>>>>>>> You should run the code at https://github.com/ceki/logback-perf 
>>>>>>>>>>>> <https://github.com/ceki/logback-perf> to compare your results to 
>>>>>>>>>>>> Ceki’s.  You also should capture the cpubenchmark speed of your 
>>>>>>>>>>>> processor and get the speed of your hard drive. I used Blackmagic 
>>>>>>>>>>>> speed test on my Mac. I am capturing my results in a Google 
>>>>>>>>>>>> spreadsheet. I will post the like once I have it.
>>>>>>>>>>>> 
>>>>>>>>>>>> Ralph
>>>>>>>>>>>> 
>>>>>>>>>>>>> On Feb 5, 2017, at 1:48 PM, Gary Gregory <garydgreg...@gmail.com 
>>>>>>>>>>>>> <mailto:garydgreg...@gmail.com>> wrote:
>>>>>>>>>>>>> 
>>>>>>>>>>>>> If you want, I can run tests on Windows once the build works on 
>>>>>>>>>>>>> Windows again.
>>>>>>>>>>>>> 
>>>>>>>>>>>>> Let me know what args/command line...
>>>>>>>>>>>>> 
>>>>>>>>>>>>> Gary
>>>>>>>>>>>>> 
>>>>>>>>>>>>> On Feb 5, 2017 11:58 AM, "Apache" <ralph.go...@dslextreme.com 
>>>>>>>>>>>>> <mailto:ralph.go...@dslextreme.com>> wrote:
>>>>>>>>>>>>> I guess my MacBook Pro must fit in the Slow CPU/Fast Hard drive 
>>>>>>>>>>>>> category. With Logback 1.10 and -t 4  now get
>>>>>>>>>>>>> 
>>>>>>>>>>>>> Benchmark                                         Mode  Samples   
>>>>>>>>>>>>>      Score       Error  Units
>>>>>>>>>>>>> o.a.l.l.p.j.FileAppenderBenchmark.julFile        thrpt       20   
>>>>>>>>>>>>>  98187.673 ±  4935.712  ops/s
>>>>>>>>>>>>> o.a.l.l.p.j.FileAppenderBenchmark.log4j1File     thrpt       20   
>>>>>>>>>>>>> 842374.496 ±  6762.712  ops/s
>>>>>>>>>>>>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2File     thrpt       20  
>>>>>>>>>>>>> 1853062.583 ± 67032.225  ops/s
>>>>>>>>>>>>> o.a.l.l.p.j.FileAppenderBenchmark.log4j2RAF      thrpt       20  
>>>>>>>>>>>>> 2036011.226 ± 53208.281  ops/s
>>>>>>>>>>>>> o.a.l.l.p.j.FileAppenderBenchmark.logbackFile    thrpt       20   
>>>>>>>>>>>>> 999667.438 ± 12074.003  ops/s
>>>>>>>>>>>>> 
>>>>>>>>>>>>> I’ll have to try this on one my VMs at work. We don’t run 
>>>>>>>>>>>>> anything directly on bare metal any more.
>>>>>>>>>>>>> 
>>>>>>>>>>>>> Ralph
>>>>>>>>>>>>> 
>>>>>>>>>>>>>> On Feb 5, 2017, at 9:40 AM, Apache <ralph.go...@dslextreme.com 
>>>>>>>>>>>>>> <mailto:ralph.go...@dslextreme.com>> wrote:
>>>>>>>>>>>>>> 
>>>>>>>>>>>>>> Ceki finally fixed some of the performance problems in the 
>>>>>>>>>>>>>> FileAppender. See https://logback.qos.ch/news.html 
>>>>>>>>>>>>>> <https://logback.qos.ch/news.html> and 
>>>>>>>>>>>>>> https://docs.google.com/spreadsheets/d/1cpb5D7qnyye4W0RTlHUnXedYK98catNZytYIu5D91m0/edit#gid=0
>>>>>>>>>>>>>>  
>>>>>>>>>>>>>> <https://docs.google.com/spreadsheets/d/1cpb5D7qnyye4W0RTlHUnXedYK98catNZytYIu5D91m0/edit#gid=0>.
>>>>>>>>>>>>>>  I suspect we have a few optimizations we can make.
>>>>>>>>>>>>>> 
>>>>>>>>>>>>>> Ralph
>>>>>>>>>>>>> 
>>>>>>>>>>>> 
>>>>>>>>>>>> 
>>>>>>>>>>>> 
>>>>>>>>>>>> 
>>>>>>>>>>>> -- 
>>>>>>>>>>>> Matt Sicker <boa...@gmail.com <mailto:boa...@gmail.com>>
>>>>>>>>>>> 
>>>>>>>>>>> 
>>>>>>>>>>> 
>>>>>>>>>>> 
>>>>>>>>>>> -- 
>>>>>>>>>>> Matt Sicker <boa...@gmail.com <mailto:boa...@gmail.com>>
>>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> -- 
>>>>>>>>> Matt Sicker <boa...@gmail.com <mailto:boa...@gmail.com>>
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> -- 
>>>>>>>>> Matt Sicker <boa...@gmail.com <mailto:boa...@gmail.com>>
>>>>>>>> 
>>>>>>> 
>>>>>> 
>>> 
>> 
>> 
>> 
>> 
>> -- 
>>  
>> 
>> Mikael Ståldal
>> Senior software developer 
>> 
>> Magine TV
>> mikael.stal...@magine.com <mailto:mikael.stal...@magine.com>    
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>> Matt Sicker <boa...@gmail.com <mailto:boa...@gmail.com>>
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