Hmmm. I would expect the rattle to coincide with i/o. So it is reasonable
that there should be some when you do a netmon - whatever, since it writes
a report. And is the writing of the report taking that long? But then I
would
expect rattling due to tracing. Hey, you must have one of the old F50s ha
ha.
I wonder how you know that the pinging is extra, and not the usual
scheduled pinging? I always see lots of pinging when I look at the
trace. If you run a netmon -a 12, and then turn on tracing,
does it appear that things are being rescheduled?
Cordially,
Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
Detroit
Jane Curry
<jane.curry@skills- To: NetView mailing list
1st.co.uk> <nv-l@tkg.com>
Sent by: cc:
owner-nv-l@tkg.com Subject: [NV-L] netmon
rattles my disk
to death!
09/07/01 02:56 PM
Please respond to
IBM NetView
Discussion
AIX 4.3.3 ML06, NV 6.0.2.
Recently I've found that there is the usual disk rattle when netmon
starts up and when I open a map and synchronisation occurs. But now, a
"netmon -a 12" causes a huge disk rattle for several minutes; same for
any netmon -a command. Turning up netmon tracing shows that any of the
netmon -a commands causes a ping of everything in the database!! Surely
this isn't expected? It's definitely netmon doing this 'cos if you kill
netmon the disk rattle stops the moment netmon dies.
What's changed I hear you ask?? I've installed TEC AIM recently but
I've made sure it's not running. I've also installed the X11.vfb part
of AIX.
vmstat shows all the CPU going into wait ie. rattling the disk. There's
no system paging going on. The ovwdb cache parameter is about 3 times
the object database. There's no obvious growth in anything in
/usr/OV/log and there's nothing in the AIX error log.
Anyone else seen this? Any clues?
Thanks,
Jane
--
Tivoli Certified Enterprise Consultant & Instructor
Skills 1st Limited, 2 Cedar Chase, Taplow, Bucks, SL6 0EU, UK
Tel: +44 (0)1628 782565
Copyright (c) 2001 Jane Curry <jane.curry@skills-1st.co.uk>. All rights
reserved.
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