Opteron VS Xeon - Benchmark results
Hi, I've got some interesting (IMHO) results of comparison between two servers which may be gilt-edged. (Simply: Postgres 7.4.3 with fsync turned off, Tomcat 5.0.25 & j2sdk-1.4.2-rc1). Opteron (SID, x86-64; kernel: 2.6.7): MB: Tyan Thunder K8S S2880 2x Opteron 246 (2,0Ghz) 1Mb 4Gb Ram ECC Reg. PC3200 RAID ADAPTEC 2120S 3x Seagate SCSI 1rpm 73Gb->RAID5 Xeon (SID, i386; kernel: 2.6.4-p4-aic79) : MB: INTEL SE7501WV2 SCSI 2x Xeon 3,06 (HT ON) 512KB 2Gb Ram ECC Reg. PC2100 Integrated SCSI Adaptec AIC-7902 2x Seagate SCSI 15000rpm 18Gb ST318453LC ->soft raid CATALINA_OPTS="-Xmx600m -server" ab -n 2 -c 500 http://localhost:8080/jsp-examples/jsp2/simpletag/repeat.jsp results: Opteron: Requests per second: 5878.89 [#/sec] (mean) Time per request: 85.05 [ms] (mean) Time per request: 0.17 [ms] (mean, across all concurrent requests) Transfer rate: 10670.73 [Kbytes/sec] received Xeon: Requests per second: 2212.88 [#/sec] (mean) Time per request: 225.95 [ms] (mean) Time per request: 0.45 [ms] (mean, across all concurrent requests) Transfer rate: 4018.18 [Kbytes/sec] received pgbench with read/write transactions pgbench -c 10 -t 100 pgbench Opteron: tps = 1011.802678 (including connections establishing) tps = 1074.345804 (excluding connections establishing) Xeon: tps = 514.228179 (including connections establishing) tps = 531.858596 (excluding connections establishing) pgbench with read only transactions pgbench -c 10 -t 100 -S pgbench Opteron: tps = 2787.650707 (including connections establishing) tps = 3309.417278 (excluding connections establishing) Xeon: tps = 2508.132620 (including connections establishing) tps = 2987.241492 (excluding connections establishing) === Summary: 1. simple http query test - opteron two times faster 2. full TPC-B-like pgbench test - opteron two times faster 3. read only pbgench test - opteron ca. 10% faster
Re: installation report/problems with xsane and subversion
Alex Perry wrote: Unless I'm missing something, those packages depend on things that are neither in that directory nor available on alioth: $ sudo dpkg -i mozilla-browser_1.7-5_amd64.deb Password: Selecting previously deselected package mozilla-browser. (Reading database ... 55818 files and directories currently installed.) Unpacking mozilla-browser (from mozilla-browser_1.7-5_amd64.deb) ... dpkg: dependency problems prevent configuration of mozilla-browser: mozilla-browser depends on libgcc1 (>= 1:3.4.1-1); however: Version of libgcc1 on system is 1:3.3.4-3. mozilla-browser depends on libstdc++6 (>= 3.4.1-1); however: Package libstdc++6 is not installed. mozilla-browser depends on libnspr4 (= 2:1.7-5); however: Version of libnspr4 on system is 2:1.7.1-1. dpkg: error processing mozilla-browser (--install): dependency problems - leaving unconfigured Errors were encountered while processing: mozilla-browser $ apt-cache showpkg libstdc++6 Package: libstdc++6 Versions: Reverse Depends: mozilla-browser,libstdc++6 3.4.1-1 Dependencies: Provides: Reverse Provides: $ Sorry, you will also need the gcc 3.4.1 packages found in http://debian-amd64.alioth.debian.org/pure64/tmp/ Regards Anders Fugmann
Re: amd64 sleeps too quickly
> Note the difference in command lines: Ian ran "time" on an outside > machine, so that the machine was not timing its own "sleep" command. I get the same (correct) result when using another host running i386 linux to time the sleep command: $ time ssh feynman "sleep 5; echo done" done real0m5.102s user0m0.011s sys 0m0.002s > This bug is probably one[1] that has been discussed at some length on > the linux-kernel list (after it showed up here). Looks like it, but as far as I can tell this also causes the time of day to advance twice as fast as it should... I would think Ian would notice this before testing out "sleep". -David
