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onload/onunload for informix cause system to 100% CPU usage

Fei Wang
Occasional Advisor

onload/onunload for informix cause system to 100% CPU usage

When I run onload/onunload after the IDS is
brought up for about 5 mins, it cause the
the system to kind of "hangup". "top" shows
cpu usage is 100%.

However this "hangup" only happend when onload/
onunload is ready to quit, which means, it does
read/write the tape successfully. It just cant
quit normally. The same error also happend when
I just type "onload -;", which suppose to give
the onload help information. However, like I
mention before "onload -;" does give out help
and quit normally during the first 5 mins after
the IDS is brought up.

Here is the platform information
Informix 7.31UD6. HPUX 11i. HP A500 server.

I am wondering if anyone have seen the similar
problem, or if anyone knows how to debug more
to find out the cause for this.

Thanks for your help.

Fei
gbridge
2 REPLIES
doug mielke
Respected Contributor

Re: onload/onunload for informix cause system to 100% CPU usage

The next clue could come from a
sar -M 10 10
to see what the 100% is doing / waiting for
usr vs sys vs i/o
Fei Wang
Occasional Advisor

Re: onload/onunload for informix cause system to 100% CPU usage

Here is the output:

prompt: /usr/sbin/sar -M 10 10

HP-UX cam01 B.11.11 U 9000/800 09/15/03

15:28:36 %usr %sys %wio %idle
15:28:46 100 0 0 0
15:28:56 100 0 0 0
15:29:06 100 0 0 0
15:29:16 100 0 0 0
15:29:26 100 0 0 0
15:29:36 100 0 0 0
15:29:46 98 0 0 1
15:29:56 14 10 1 75
15:30:06 18 0 1 81
15:30:16 0 0 0 100

usr changes from 100% to 0% after I shutdown
and bring up IDS again.

Thanks,
Fei
gbridge