I'm on a z800 with a Gbit adapter and we nightly refresh the MSSQL server from DB2 (replicate 40 tables or so about 6GB) and during that period (1hr) I've seen TCPIP run in the 30% range. Unless you are doing serious DB2 requests I doubt that you could burn that much networking cycles. I'd be looking for a wild application or a network problem causing retries.
Steve Domarski 352-368-8350
Property Appraisers Office Marion County Florida USA
"Great minds discuss Ideas.
Average minds discuss events.
Small minds discuss people. " - Admiral Hyman Rickover
Kris Buelens
<[EMAIL PROTECTED] To:
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Sent by: The IBM Subject: High CPU usage by TCPIP
z/VM Operating
System
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04/06/2006 08:34
AM
Please respond
to The IBM z/VM
Operating System
My customer migrated from a 9672 with OSA/2 to a z9 with OSA Express and
DS8000 dasds. Today, I observed that TCPIP consumed constantly about 30%
to
40% CPU during three periods of 8 to 20 minutes. The application probabl
y
is remote access to DB2/VM over TCPIP (surely no FTP, NFS, nor SMTP).
I do realize that the new OSA is much faster, so more data can be transfe
red
per second by TCPIP, but 30% of a z9 engine is much.
Should we consider this as normal, or do we have to start digging?
Kris Buelens
