Re: libpthread vs libthread, simply mysql benchmark

From: Robert Watson (rwatson_at_FreeBSD.org)
Date: 02/19/05

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    Date: Sat, 19 Feb 2005 16:51:43 +0000 (GMT)
To: Bosko Milekic <bmilekic@technokratis.com>

    On Sat, 19 Feb 2005, Bosko Milekic wrote:

    > > As of today, I get about 8400tps with HTT turned on, probably a bit
    > > betterwith it turned off. By combining various factors we've introduced
    > > in the last couple of years, such as MPSAFE network stack, scheduling
    > > improvements, threading improvements, mutex changes, etc, we've improved
    > > performance on mysql by over 100% on SMP, going from quite sub-par
    > > performance in the depths of 5.x development (when all the infrastructure
    > > changes were going in but no optimizations) to quite healthy in 6.x,
    > > especially with the new threading library.
    >
    > For reference, do you have numbers from RELENG_4?

    Unfortunately, not for this box. I hope to get a chance to run the tests
    against a handy dual PIII with 4.x, 5.x, and 6.x in the next couple of
    days. Just as an FYI to those wanting to give this a spin -- to test with
    libthread on 6.x, you'll need a copy of MySQL linked against libc.so.6 so
    it can get to the _umtx_op symbol, which is not currently present in a 5.x
    libc. This basically translates to meaning: you'll need a package/port of
    MySQL built against 6.x to test with libthread. The package on
    ftp.FreeBSD.org worked fine for me.

    Robert N M Watson

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