Date: Wed, 15 Feb 2006 21:10:16 +0000 From: BSD <bsdlists@celeritystorm.com> To: Clement Laforet <sheepkiller@cultdeadsheep.org>, freebsd-apache@freebsd.org Subject: Re: Apache 1.3 + PHP 5 on FreeBSD 6 -- bad performance under load Message-ID: <43F398B8.2000103@celeritystorm.com> In-Reply-To: <20060215210533.GB59145@goofy.cultdeadsheep.org> References: <43F3539E.5080007@celeritystorm.com> <20060215210533.GB59145@goofy.cultdeadsheep.org>
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Clement Laforet wrote: >On Wed, Feb 15, 2006 at 04:15:26PM +0000, BSD wrote: > > >>As you can see, it took 10 seconds to reply to the GET, yet the >>accepting of the connection was instant. >>I have more than enough maxfiles, maxproc, maxfilesperproc, nmbclusters >>etc. I guess the connection is so promptly answered because of the http >>accept filters built in the kernel. >> >>As a final note, the MaxClients I'm using are not nearly enough (around >>200 connections/second, according to pfstat graphics vs MaxClients 98). >>The reason for this is that trying to match MaxClients with the real >>load resulted in two 0.0% idle processors, since the PHP code is a bit >>heavy. I've opted to disable KeepAlive and lower MaxClients instead. >>Could this be the delay I'm seeing ? I think so, but I need more >>opinions, so feel free to reply. >> >> > >It looks like requests are stuck in the listen backlog. > >clem > > That is my main suspect too. Is there a way to know how many connections are currently on the backlog ?
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