Date: Wed, 22 Jan 2003 09:57:15 +0200 From: Dmitry Alyabyev <dimitry@al.org.ua> To: freebsd-isp@freebsd.org Subject: Re: tuning suggestions? Message-ID: <200301220957.15725.dimitry@al.org.ua> In-Reply-To: <aoqr2v4qoo0udl5dk3uusoctvbpivc6mn9@4ax.com> References: <mailman.1043163721.4591.fisp-l@lists.sentex.ca> <aoqr2v4qoo0udl5dk3uusoctvbpivc6mn9@4ax.com>
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On Wednesday 22 January 2003 02:54, Mike Tancsa wrote: > >Shortly after making world, striping the kernel, upgrading apache, > >and installing WebGUI on a couple of websites (WebGUI requires > >mod_perl to preload Apache::Registry), I began to get these two > >errors. > > > >pmap_collect: collecting pv entries -- suggest increasing > >PMAP_SHPGPERPROC microuptime() went backwards (613878.982533 -> > >613874.389277) > > > >This machine sees fairly heavy MySql use and moderate httpd load. > >It has been faithfully doing its job for a couple of years now from > >3.0 - 4.7-stable and has never given a problem. I have read man > >tuning, LINT, and searched the archives on these two errors and > >really haven't come up with a lot of information. The following > >lines from lint are sketchy at best. [skip] > I would get rid of APM yes, and increase PMAP_SHPGPERPROC. Lint is saying > the default is 200. It was a few months ago and I forget how I arrived at > the number, but we saw the same thing on a busy apache/mySQL server so we > increased the value to 400 and the problem went away. There is 768MB of > RAM on that box. I would say the value of PMAP_SHPGPERPROC should be slightly increasing until you will not the message from pmap_collect. Don't try to rise it sharply ! In my case the value is frozen on 300 (2xPIII-1.4, RAM 1G, Apache/Mysql) -- Dimitry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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