Hi all!
I run a medium php site with currently 10 web-servers and one haproxy. All webservers are dual or even dual dual-core servers. PHP5 accelerated with XCache. HAProxy shows about 100-200 req/s, which is not really a lot for the number of servers I think.
Each php page normally takes only about 0.1s - 0.3s to generate, as stated in the html-code. My problem is that haproxy shows a lot of Resp-Errors and Retr-Warnings. Even worse some backend checks fail although these hit a static page! All webservers are always accessible trough their IP and show no overload in their extended status pages. Using top shows a load average of 0.5 - 2.0 (50% idle).
Sometimes all servers get loaded up to their haproxy max limit for some seconds, but when I access the apache status page the servers are still almost idle.
I really tried everything to find the errors, but I'm stuck. no entries in the syslog, no apache error logs. How can I track the errors down?
I really appreciate any help on this strange behavior.
Corin Received on 2007/12/04 21:29
This archive was generated by hypermail 2.2.0 : 2007/12/04 22:15 CET