Hi, I have a quite loaded webserver, the CPU is very low and memory usage is also low, but sometimes the page doesn't respond... Here's the info on my system: FreeBSD 7.1 amd64 1x Q9550 (quad core) 8Gb RAM top ------ last pid: 13453; load averages: 0.09, 0.08, 0.07 up 3+04:04:03 00:34:56 306 processes: 1 running, 304 sleeping, 1 zombie CPU: 0.3% user, 0.0% nice, 0.2% system, 0.0% interrupt, 99.5% idle Mem: 666M Active, 1746M Inact, 545M Wired, 84K Cache, 214M Buf, 4957M Free Swap: 4096M Total, 4096M Free PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 97616 root 1 44 0 181M 22084K select 0 0:14 0.00% httpd 516 root 1 44 0 5688K 1376K select 0 0:07 0.00% syslogd 652 root 1 44 0 10696K 4120K select 0 0:03 0.00% sendmail 11084 www 1 44 0 183M 25556K select 0 0:02 0.00% httpd 641 root 1 44 0 22876K 3904K select 3 0:01 0.00% sshd 11977 www 1 44 0 183M 25432K select 0 0:01 0.00% httpd 95731 root 1 44 0 33768K 4688K select 0 0:01 0.00% sshd 12203 www 1 44 0 183M 25344K select 0 0:01 0.00% httpd 95408 root 1 44 0 33768K 4688K select 0 0:01 0.00% sshd 12354 www 1 44 0 183M 25884K select 3 0:01 0.00% httpd 95391 root 1 44 0 33768K 4688K select 1 0:01 0.00% sshd 12419 www 1 44 0 182M 25104K select 0 0:01 0.00% httpd 12437 www 1 44 0 182M 25204K select 2 0:01 0.00% httpd 12468 www 1 44 0 183M 25788K select 0 0:01 0.00% httpd 12479 www 1 44 0 183M 25208K select 3 0:01 0.00% httpd 12453 www 1 44 0 183M 25224K select 2 0:01 0.00% httpd 12478 www 1 44 0 183M 25304K select 0 0:01 0.00% httpd 12617 www 1 44 0 183M 25284K select 3 0:00 0.00% httpd 12550 www 1 44 0 183M 25164K select 0 0:00 0.00% httpd 12529 www 1 44 0 182M 25252K select 0 0:00 0.00% httpd 12621 www 1 44 0 182M 25308K select 0 0:00 0.00% httpd 12694 www 1 44 0 182M 25148K select 0 0:00 0.00% httpd 12680 www 1 44 0 182M 25124K select 2 0:00 0.00% httpd 12650 www 1 44 0 182M 25060K select 0 0:00 0.00% httpd 12730 www 1 44 0 183M 25152K select 3 0:00 0.00% httpd 12698 www 1 44 0 183M 25476K select 0 0:00 0.00% httpd 12708 www 1 4 0 183M 25536K accept 0 0:00 0.00% httpd 12665 www 1 44 0 182M 25028K select 3 0:00 0.00% httpd 12809 www 1 44 0 183M 25312K select 0 0:00 0.00% httpd 12787 www 1 44 0 182M 25072K select 0 0:00 0.00% httpd 12798 www 1 44 0 182M 25116K select 0 0:00 0.00% httpd 12788 www 1 44 0 183M 25440K select 3 0:00 0.00% httpd 12752 www 1 44 0 182M 25208K select 0 0:00 0.00% httpd 12852 www 1 44 0 183M 25092K select 2 0:00 0.00% httpd 12794 www 1 44 0 182M 25172K select 3 0:00 0.00% httpd 12866 www 1 44 0 183M 25088K select 2 0:00 0.00% httpd 662 root 1 8 0 6744K 1440K nanslp 0 0:00 0.00% cron 12760 www 1 44 0 183M 25500K select 0 0:00 0.00% httpd 12754 www 1 44 0 182M 25216K select 0 0:00 0.00% httpd 12833 www 1 44 0 182M 25080K select 3 0:00 0.00% httpd 12907 www 1 44 0 182M 25296K select 3 0:00 0.00% httpd 12864 www 1 44 0 182M 25072K select 0 0:00 0.00% httpd 12842 www 1 44 0 182M 25232K select 0 0:00 0.00% httpd 12816 www 1 44 0 183M 25264K select 0 0:00 0.00% httpd 12925 www 1 44 0 182M 25008K select 3 0:00 0.00% httpd 12800 www 1 44 0 182M 25056K select 2 0:00 0.00% httpd 12948 www 1 44 0 183M 25696K select 0 0:00 0.00% httpd 12914 www 1 44 0 182M 25208K select 0 0:00 0.00% httpd 12911 www 1 44 0 182M 24876K select 0 0:00 0.00% httpd 12904 www 1 44 0 183M 25100K select 0 0:00 0.00% httpd 12944 www 1 44 0 183M 25180K select 1 0:00 0.00% httpd 13029 www 1 44 0 182M 25316K select 3 0:00 0.00% httpd ......many more httpd processes ....truncated..... How can it be to have 5Gb of RAM free? each apache process uses almost 26Mb and there are 300 processes so ....26Mbx300processes= 7800Mb (the system have 8Gb)?? My hhtpd.conf (relevant lines) as follows: Timeout 20 KeepAlive On MaxKeepAliveRequests 0 KeepAliveTimeout 15 MinSpareServers 16 MaxSpareServers 64 StartServers 16 ServerLimit 512 MaxClients 512 MaxRequestsPerChild 10000 do you recommend me any changes? why the CPU and memory is not fully used...and why the server is not responding sometimes with so low load? Thanks for your help
Hi can do print the result of uname -a Make sure your OS is 64bit otherwise its not going to see the full 8gb of RAM. Regards, Logan
[root@webmaster /usr/local/etc/apache22]# uname -a FreeBSD webmaster.accesorius.com 7.1-RELEASE FreeBSD 7.1-RELEASE #0: Thu Jan 1 08:58:24 UTC 2009 :/usr/obj/usr/src/sys/GENERIC amd64