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Date: Sun, 25 Feb 2007 14:31:28 -0500
From: Kris Kennaway <kris@obsecurity.org>
To: Martin Blapp <mb@imp.ch>
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Cc: hackers@freebsd.org, Robert Watson <rwatson@freebsd.org>
Subject: Re: Progress on scaling of FreeBSD on 8 CPU systems
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On Sun, Feb 25, 2007 at 01:54:20PM +0100, Martin Blapp wrote:
>=20
> Hi,
>=20
> >It would be really great if we could find "workload owners" who would=20
> >maintain easy-to-run benchmark configurations and also run them regularl=
y=20
> >on a fixed hardware configuration over a long time publishing results an=
d=20
> >testing patches.  Kris has done this for SQL benchmarks to great effect,
>=20
> I'm interested in such a workload test. At my job we run various other
> servers which have a classic virus/antispam environment. And unfortunatly
> clamd behaves not very well on FreeBSD (see mails to freebsd-threads),
> and this happens even on 2-CPU systems.
>=20
> I think its not very difficult to make a scripted load test, with=20
> 2/4/6/8/16/32
> scans in parallel, with ULE or BSD scheduler.
>=20
> Btw: what is the best method to profile a threaded application to see whe=
re=20
> it
> spends the most CPU time ?

If you can package up some kind of test or analogous workload that I
can run, I'd be happy to take a look at profiling it on MP hardware.

Kris

P.S. I assume you've done all the usual things like using libthr
instead of libpthread.

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