On 7/3/06, satinders@xxxxxxxxxxxxxxxxxx <satinders@xxxxxxxxxxxxxxxxxx> wrote:
Hi, I have Apache 2.0.53 running on linux ( 2.4.19 kernel ). I have observed that after running for 2 days OR after load testing (around 200 simultaneous connections for 30 minutes), it hangs, i.e. client is able to connect to server socket but no http response comes back. It is using SSL, so SSL cert warning comes but no further processing is done. Following is MPM conf: <IfModule worker.c> ThreadLimit 150 ServerLimit 100 ThreadsPerChild 30 MaxClients 3000 StartServers 2 #MinSpareThreads 20 #MaxSpareThreads 100 MinSpareThreads 20 MaxSpareThreads 100 MaxRequestsPerChild 2000 At this moment, the apache processes also not get reduced. It always remain the same (around 400) till i restart apache. strace on httpd processes show that they are blocked in write to some pipe. There are no segmentation faults or nasty errors in error logs. Situation does not resolve by graceful restart too. Any hint, how i should resolve this issue?
First, it is pretty-much pointless to be debugging problems with an old version of the server. Start by upgrading to at least the most recent 2.0 (and preferably 2.2.2). Second, you can attach to the hung processes with a debugger and get a backtrace to see where they are struck. See: http://httpd.apache.org/dev/debugging.html Third, your MaxRequestsPerChild looks way too low. This should optimally be set to 0. This counts requests to all threads in a process, so it will force apache to be recycling processes very frequently. Joshua. --------------------------------------------------------------------- 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