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Date: Tue, 3 Oct 2006 08:19:49 +0200
From: Divacky Roman <xdivac02@stud.fit.vutbr.cz>
To: Nick Evans <nevans@talkpoint.com>
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Cc: Mike Jakubik <mikej@rogers.com>, performance@freebsd.org,
	Jan Zacharias <fbsd-performance@graphics.cs.uni-sb.de>
Subject: Re: Samba Performance problem
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On Mon, Oct 02, 2006 at 12:42:41PM -0400, Nick Evans wrote:
> On Mon, 02 Oct 2006 10:30:23 -0400
> Mike Jakubik <mikej@rogers.com> wrote:
> 
> > Nick Evans wrote:
> > > Mike Jakubik <mikej@rogers.com> wrote:
> > >   
> > >> Quite possibly, just as MySQL has been written with Linux primarily in
> > >> mind. 
> > >
> > > It should be possible to profile smbd and see where the bottleneck is, no?
> > > Has anyone tried it?
> > >   
> > 
> > 
> > It should be, but i don't believe anyone has tried yet.
> > 
> 
> Does anyone know how to get gprof to set the gmon.out file with a pid number
> in the filename? It's kind of hard to get output of the pid that controls a
> file transfer without it. Everything I've found via Google is not working so
> far.

I'd start with plain ktrace and look in the trace to check for 'suspicious things'.
It might be something trivial like calling gettimeofday() way too often as it
was with mysql....