Hello everybody.

I have a problem with my AIX 5.3. Recently my unix shows a high cpu utilization with sar or topas.

I need to find what I have to do to solve this problem, in fact, I don't know what is my problem.

I had the same problem with another AIX 5.3 running the same application. The %sys and %user normally shows 45 (user) and 21 (sys) average. I don't know what happened, but the performance decreased and my %usr shows 21 and %sys 50. With a reboot the server came back with normal load and good performance. I don't want to reboot my other server without knowing my problem.

Please, help me to find what process is consuming too much %SYS (see attachments).

Thanks

Attached Files

	ps_aux.txt (13.8 KB, 195 views)
	sar.txt (1.4 KB, 190 views)

You have idle CPU, so that would not be my guess. Can you check vmstat to see if your system is paging[ swapping ] ?

Regards, Kaps

The following is based on my experience with SCO, and may not have any significance, but:
Sometimes when users close terminal emulation sessions, or reboot Windows clients, without signing off the unix system, the telnet session lives on the host, without a client and for some reason consumes a large amount of cpu.
The way to discover this is to run 'ps -leaf |grep ttyp' and compare the output to 'who |grep ttyp' and see if there are unaccounted for sessions.
Then just kill the sessions for which there is no signed on user.