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Date: Sat, 24 Feb 2007 23:24:42 +0100 (CET)
From: Martin Blapp <mb@imp.ch>
To: Daniel Eischen <deischen@freebsd.org>
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ReSent-Subject: Re: 6.2-Release and Clamd 0.90 with libpthread.so
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Subject: Re: 6.2-Release and Clamd 0.90 with libpthread.so
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Let me make a summary:

With kern.threads.virtual_cpu=1 clamd works best with libpthread.
It uses almost no CPU. With kern.threads.virtual_cpu=2 or
kern.threads.virtual_cpu=4 and growing scanner load, the CPU load
grows exponentially.

The initial fork() seems not to be the problem. It happens in
the foreground mode (without any fork call) too, but only if
there is some amount of scanner load.

Setting maxthreads in clamd.conf seems to make the situation
even worse.

libthr and libc_r work without any problems and ktrace here doesn't
show any fork() calls at all.

I wonder if something else could get libpthread spinning on
kse activation stuff. I still think something is wrong here.

Martin

Martin Blapp, <mb@imp.ch> <mbr@FreeBSD.org>
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