Issue- We have web server with two instances of apache running. Its with Worker MPM. Traffic is around 4200 hits/min on the server(both instances). We see server getting into high load raises above 5-6 and most of the CPU used is in "user space" by httpd process. Its a 2Dual core CPU box. when load reaches around 5, i checked vmstat and it gives process in cpu run queue above 4 or 5. Since its a prod box we get alert and need to bounce. The server environment is-
Environment - 2 apache instances with corresponding tomcat instances. Applciation - Used to server a simple .pac file. Scenario - OS - RHEL2AS ( 2.4.9-e.40enterprise #1 SMP) apache- Apache/2.0.48 arch - 32bit memory - 4GM + 1GB swap httpd.conf (worker setting original) <IfModule worker.c> #ServerLimit 25 StartServers 2 MaxClients 300 MinSpareThreads 75 MaxSpareThreads 250 ThreadsPerChild 25 MaxRequestsPerChild 20000 </IfModule> KeepAlive is ON. KeaapAliveTime is default(15) the httpd "RSS" value is appx 4.2MB Need help in tunning apache so that best use of Hardware resources can be made. Thanks Kulbir
