Thanks for the info, I was just trying everything to somehow fix the problem, I was suspecting some kind of leak, but it is apparently not the case... Before the problems started (and I started fixing it) it was set to 0, the setting has no effect on the problem. On 17.05.2010 17:19, Jeff Trawick wrote: > On Sun, May 16, 2010 at 4:42 PM, Peter Halicky <peto@xxxxxxxxxx> wrote: > >> Hi, >> >> I run a "LAMP" server with a few websites, one of them quite busy. I use >> Ubuntu 8.04 with apache 2.2.8 >> and PHP 5.2.4. The problem is this: about once a day, apache processes >> cause the system load to go very >> high (today it was ~30). During this time, I can not display any webpage >> on my server. If I do not notice, the >> problem goes away after 3-10 minutes. If I do notice, I can ssh into the >> server (if I'm lucky and I get a connection, >> which could be a problem with sysload over 30+), I kill all apache >> processes (very many of them, usually equal >> to MaxClients), restart and everything is fine (with sysload rarely >> above 2, usually around 0.5). >> >> I use the prefork MPM with the following settings (just for the record): >> >> StartServers 5 >> MinSpareServers 5 >> MaxSpareServers 10 >> MaxClients 80 >> MaxRequestsPerChild 10 >> > Death by fork() > > Did you really intend to throw away and recreate a child process after > it handles only 10 requests? > > MaxRequestsPerChild as a preventative measure: this is generally in > the 10s of thousands (e.g., MaxRequestsPerChild 50000) > > MaxRequestsPerChild to solve an actual resource problem: this is > generally in the thousands (e.g., MaxRequestsPerChild 4000) > > If the third-party software loaded into or otherwise run inside httpd > really can't handle more than 10 requests before leaking so much > memory or other resources that the process has to exit to clean up the > resources immediately, throw it away. > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx > " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx > For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx > > --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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