Apache Server Status CPU usage information

["Supratik Goswami" <supratiksekhar@xxxxxxxxx>]

Hi All !

I have Apache/2.2.6 running in my Fedora 8 system. I have enabled the server-status directive in the httpd.conf file and I am able to view the current state of the Apache server status. My question is 1) what is meant by (u s cu cs) in the CPU usage and how those values are calculated, can anyone please explain me in details. I found through google this link [http://corelib.rubyonrails.org/classes/Benchmark/Tms.html] where the information is not in detail.I am confused, if child processes are mostly using the CPU then in which circumstance the parent uses the CPU. 2) What is meant by CPU load, is it for that point of time or average from uptime. 3) Is the CPU load calculated from the CPU usage. My Apache server status is given as below... can anyone please help me to resolve these queries.

Current Time: Wednesday, 02-Apr-2008 20:25:49 IST

Restart Time: Wednesday, 02-Apr-2008 19:41:19 IST

Parent Server Generation: 0

Server uptime: 44 minutes 29 seconds

Total accesses: 69 - Total Traffic: 32 kB

CPU Usage: u.09 s0 cu0 cs0 - .00337% CPU load

.0259 requests/sec - 12 B/second - 474 B/request

1 requests currently being processed, 7 idle workers

Thanks & Regards
Supratik