Re: oninit use 95+%cpu
Posted in 2000
From: vyao@dehavilland.ca
>
>We have a production server which is running IDS 7.31uc2 on HP-UX 10.20.
>This
>morning one oninit process use 95+% cpu and none of the users could do
>anything.
>No any error could find in informix online log and unix syslog.
>
>At that time, there was a informix trainer happened to be on site and he
>suggest
>changed two parameter:
>1)SERVERNUM from "101" to be "1". His explanation is that because when it
>was
>101, the shared memory was loosing contiguous space. He says that when
>the
>default is 1 then contiguous space it retained.
Uhhhh...I'll bite my tongue, I think.
>2) RESIDENT from NO(0) to YES(1).
This is always a good idea, if you can spare the RAM. But I'm not sure what
RAM has got to do with CPU utilisation. Can you send us your onconfig file,
and the output from onstat -p, onstat -g seg, onstat -d and onstat -D as a
starting point. Also onstat -P | tail -5 and
onstat -u | tail -2
>I am not sure about these two parameters. As my understanding, the value is
>not
>important. It just need to be unique to the instance. And this machine,
>totally
>256MB physical memory and informix use 110MB. For me it is too tight to
>resident.
>
>Anybody can tell me if these two parameters related to the problem or
>explain to
>me the reason?
I don't think they are, myself. But then I'm not an Informix trainer.
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