i thibk that you can down the variable MaxRequestsPerChild 20000 to 2000 it's too much and if the child process keeps the request well i't grows bigger and bigger in memory KeepAlive is ON. i put on my server off
this too eats a huge amount of memory. my server conf with 8gs and dual xeon processors with 300 simultaneous connections and about 8k-12k hits/min <IfModule worker.c> ServerLimit 30 ThreadLimit 70 StartServers 20 MaxClients 500 MinSpareThreads 10 MaxSpareThreads 15 ThreadsPerChild 50 MaxRequestsPerChild 2000 MaxMemFree 5000 ReceiveBufferSize 714400 On Thu, Mar 12, 2009 at 1:05 PM, kulbir Saini <kulbir.sai...@gmail.com>wrote: > 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
