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Have you ran perfpmr and uploaded to Ibm for analysis. You may need to get
approval from you client to run perfpmr.
Message
From: nlx6976 via ibm-aix-l [mailto:ibm-aix-l (AT) Groups (DOT) ITtoolbox.com]
Sent: Tuesday, February 06, 2007 4:38 PM
To: rbinkl
Subject: Re: [ibm-aix-l] SAR
If sar show the system to be >60% idle then thats exactly what it is. You
should worry more if wait >60%. That shows that the system is waiting on I,
which can be virtually anything (memory, cpu, network, disk etc). You have
to track down the waits using the other tools mentioned. You should also
look at nmon and dont forget vmstat.
2/6/07, rbinkl via ibm-aix-l wrote:
Commands for Investigating AIX Peformance
General:
# prtconf
# lscfg -vp
# topas
Filesystems:
# df -kv
# mount
# lsfs -q
# ioo -L
LVM and Disks:
# lspv
# lsvg | lsvg -i
# lsvg | lsvg -li
# lsvg | lsvg -pi
--
Message
From: cdelgadop via ibm-aix-l [mailto:ibm-aix-l (AT) Groups (DOT) ITtoolbox.com]
Sent: Tuesday, February 06, 2007 2:42 PM
To: rbinkl
Subject: RE:[ibm-aix-l] SAR
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Hi
it's ok. Sar is a performance monitoring tool on any UNIX you can use to
know how is your server's CPU usage.
Depending on the access pattern of your DB2's DBs CPU can be impacted so
running sar is usefull as a first view of your server overall perfomance.
Run
sar 1 100
to take up to 100 CPU snapshots every second. will have three very
important columns you should care about: %usr, %sys, %idle.
Some rules about CPU bottlenecks:
%usr+%sys 805 probably CPU bottleneck.
%idle 60% your system is waiting for other subsystems like network or
disks to complete their tasks.
Please post sar 1 20 output, we can help.
Hope this helps
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