Date: Thu, 16 May 2002 15:43:03 -0700 From: Alfred Perlstein <bright@mu.org> To: Peter Wemm <peter@wemm.org> Cc: Doug White <dwhite@resnet.uoregon.edu>, Omar Thameen <omar@clifford.inch.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: tuning a CPU bound server Message-ID: <20020516224303.GA20683@elvis.mu.org> In-Reply-To: <20020516224023.78ACC380A@overcee.wemm.org> References: <20020514211907.W70761-100000@resnet.uoregon.edu> <20020516224023.78ACC380A@overcee.wemm.org>
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* Peter Wemm <peter@wemm.org> [020516 15:41] wrote: > > The only real problem that I know of with postfix is that it still suffers > from select(2) collisions (FreeBSD kernel problem) when it tries to shut > down a bunch of idle smtp senders. That can cause transient load average > spikes - this can be a bit alarming but doesn't actually affect things very > much. Is there a paper on avoiding this? I know how Linux does it, but they seem to need to hammer on the scheduler lock quite a bit as a workaround. -- -Alfred Perlstein [alfred@freebsd.org] 'Instead of asking why a piece of software is using "1970s technology," start asking why software is ignoring 30 years of accumulated wisdom.' Tax deductible donations for FreeBSD: http://www.freebsdfoundation.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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