On Sunday 14 October 2007 15:40:58 nordi wrote: > I wrote: > > Ian, you should modify all tests to use the same > > language settings everywhere, because otherwise the results are pure > > bogus. > > The question is: Should we use POSIX or UTF8? If we use POSIX the > results are somehow unrealistic, because everyone uses UTF8 nowadays. If > we use UTF8, we cannot compare to older systems that do not support it. > > > And then re-run the benchmarks on 10.2 and 10.3 and we will > > hopefully see a performance _increase_ for 10.3 ;) > > Hm, my results are not really what I had hoped for. More testing shows > that 10.3 still seems to be much slower than 10.0 on my system: > > Posix 10.0 UTF8 10.3 Posix 10.3 > ========== ======== ========== > Dhrystone 335.6 339.1 326.9 ok > Whetstone 198.4 203.5 201.7 ok > Execl 658.3 576.3 573.1 -13% > File Copy 1024 534.6 481.0 480.9 > File Copy 256 455.2 354.5 353.8 > File Copy 4096 588.3 717.4 736.2 > Pipe Throughput 468.1 277.6 283.3 -40% > Context Switch 554.3 384.1 385.4 -31% > Process Creat 1000.2 782.7 770.5 -23% > Shell Scripts1 873.0 343.8!!! 721.0 -17% > Shell Scripts8 893.6 331.7!!! 724.6 -19% > System Call 903.8 333.7 336.7 -63%!!! > ----- ----- ----- > Index Score: 568.9 397.3 450.6 > > The first two only do calculations and they are ok, some jitter, not > more. The last ones (syscall, pipe, switch, create processes) have a lot > of kernel involvement and score very low. The shell scripts also make > heavy use of pipes, which might explain why they still score much lower > for 10.3 than for 10.0, even though LANG=POSIX is used on both systems. > > Somehow this does not look right. The kernel in 10.3 seems to be _much_ > slower than in 10.0. Maybe someone forgot to activate some optimization > in the kernel config?
I don't have a 10.0 handy for testing. could you try' strace -T pgms/syscall 3 it will run for 3 seconds, and tell you where it spends its time. btw, I'm assuming you're running this on the same hardware for all tests Also, tests that don't do text manipulation, like grep, don't need to be tested with different locales Anders -- Madness takes its toll -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
