Hi, We're currently using a setup with a tomcat application server and an apache in front. The configuration looked like this. Apache/2.2.3 with prefork model and 7 virtualhosts. Each virtualhost had the following proxypass to the tomcat ajp connector. ProxyPass / ajp://localhost:8009/ Now we changed the setup a bit and encountered massive problems. The configuration now looks like this. Apache/2.2.3 with prefork model and 40 virtualhosts. Each virtualhost has the same proxypass as defined above. After running this setup for some hours, we saw a lot of the following messages in the apache error_log. [Wed Aug 25 07:41:48 2010] [error] (70007)The timeout specified has expired: ajp_ilink_receive() can't receive header [Wed Aug 25 07:41:48 2010] [error] ajp_read_header: ajp_ilink_receive failed [Wed Aug 25 07:41:48 2010] [error] (120006)APR does not understand this error code: proxy: read response failed from (null) (localhost) I guess it's somehow related to the topic, how much backend connections mod_proxy opens. I know I can limit the connections using max, smax (http://httpd.apache.org/docs/current/mod/mod_proxy.html#proxypass). But how do I calculate that? I have a ServerLimit of 1024. Does this mean that apache opens 1024 x 40 (virtualhosts, each has a proxypass) = 40960 connections to my tomcat? Regards, Christian --------------------------------------------------------------------- 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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