Date: Tue, 2 Jun 2009 21:20:36 +0200 From: Mel Flynn <mel.flynn+fbsd.questions@mailing.thruhere.net> To: freebsd-questions@freebsd.org Subject: Re: problem on a MX sendmail machine Message-ID: <200906022120.36705.mel.flynn%2Bfbsd.questions@mailing.thruhere.net> In-Reply-To: <Pine.LNX.4.61.0906010332380.23158@slacknet.com> References: <Pine.LNX.4.61.0906010332380.23158@slacknet.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Monday 01 June 2009 11:33:59 RJ45 wrote: > hello I have a FreeBSD machine > > FreeBSD infngw.infn.it 7.0-RELEASE-p2 FreeBSD > > being a MX record with high loads. > I often ahve this message on logs right before the machien locks up. > any hints ? > thank you > > swap_pager: indefinite wait buffer: bufobj: 0, blkno: 482607, size: 61440 a) Check disk connectivity and health b) Don't let your mailserver swap: - add memory and/or - divide load over multiple machine c) Limit disk io if you cannot stop occasional swaps: - mailstore on different physical disk then queue, no swap on this disk - memory disk for logs - switch to Maildir if using mbox Mailservers are particularly bad for swapping as every new request will 100% result in one disk write (the logfile) and possible more (header file, queue body). -- Mel
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200906022120.36705.mel.flynn%2Bfbsd.questions>