For potential future investigation, I noticed that the sysbench utility records notably lower performance in its threading benchmark on GNU/kFreeBSD systems, than on somewhat somewhat older GNU/Linux systems.
GNU/Linux, 4-way Opteron 285 2.6 GHz => 2.4383s total: > # sysbench --num-threads=64 --test=threads --thread-yields=100 > --thread-locks=2 run > sysbench 0.4.12: multi-threaded system evaluation benchmark > > Running the test with following options: > Number of threads: 64 > > Doing thread subsystem performance test > Thread yields per test: 100 Locks used: 2 > Threads started! > Done. > > > Test execution summary: > total time: 2.4383s > total number of events: 10000 > total time taken by event execution: 155.2520 > per-request statistics: > min: 0.05ms > avg: 15.53ms > max: 131.32ms > approx. 95 percentile: 56.51ms > > Threads fairness: > events (avg/stddev): 156.2500/16.61 > execution time (avg/stddev): 2.4258/0.00 > GNU/kFreeBSD, 4-way Opteron 8380 2.5 GHz => 13.4990s total: > # sysbench --num-threads=64 --test=threads --thread-yields=100 > --thread-locks=2 run > sysbench 0.4.12: multi-threaded system evaluation benchmark > > Running the test with following options: > Number of threads: 64 > > Doing thread subsystem performance test > Thread yields per test: 100 Locks used: 2 > Threads started! > Done. > > > Test execution summary: > total time: 13.4990s > total number of events: 10000 > total time taken by event execution: 861.9675 > per-request statistics: > min: 0.04ms > avg: 86.20ms > max: 207.55ms > approx. 95 percentile: 174.67ms > > Threads fairness: > events (avg/stddev): 156.2500/1.40 > execution time (avg/stddev): 13.4682/0.02 -- Steven Chamberlain ste...@pyro.eu.org -- To UNSUBSCRIBE, email to debian-bsd-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/5078cade.4080...@pyro.eu.org
