Re: Benchmark MySQL Performance On FreeBSD And Linux

On 17/12/05, Scott Long <scottl@xxxxxxxxxx> wrote:
>
> Gea-Suan Lin wrote:
>
> > On Fri, Dec 16, 2005 at 08:06:09AM +0100, Rink Springer wrote:
> >
> >>>And you should disable these options, it may increase ~10% again:
> >>>
> >>>-cpu             I486_CPU
> >>>-cpu             I586_CPU
> >>> cpu             I686_CPU
> >>
> >>A recent discussion on -STABLE warned against removing I586_CPU, refer
> >>to
> >>
> http://lists.freebsd.org/pipermail/freebsd-stable/2005-December/020696.html
> >>for more information.
> >
> >
> > Thanks, I'll try it later.
> >
> > BTW, did anyone try using jemalloc to test mysql ?
> >
>
> It was tried recently using supersmack and unix domain sockets.  The
> results were slightly slower (around 6%, IIRC).  The theory is that
> jemalloc doesn't pad out allocations as much, so there is high potential
> for cache line sharing (and thus cache thrash) between CPUs.
>
> Scott


Guys how do I know which threading library I am using, os is 5.4 STABLE and
I only enabled build_static options the rest is default, so which threading
library am I using.  If I am not using libthr how do I use that in 5.x
Thanks.

Chris
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