Thanks Barton for your offer. We saw it too late, no TCPIP monitor data was being collected... I'll have a look to see if it happens again tomorrow (it probably is the monthly closing that causes this unexpected load, a month ago TCPIP was behaving the similarly. A graph of the CPU used by TCP/IP and a given DB2 database showed a perfect correlation)
Kris, IBM Belgium, VM customer support The IBM z/VM Operating System <[email protected]> wrote on 2006-04-06 18:45:28: > Does your customer have a product that processes the TCPIP > monitor records? the data is there to show why tcpip is using > cpu. If not, send me some data and i can process it with esamap. > No, this is NOT normal, but when it happens, can be traced down > to what is causing it quite easily with decent tools) > >Date: Thu, 6 Apr 2006 07:34:03 -0500 > >From: =?ISO-8859-1?Q?Kris_Buelens?= <[EMAIL PROTECTED]> > > > >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 > > "If you can't measure it, I'm Just NOT interested!"(tm) > /************************************************************/ > Barton Robinson - CBW Internet: [EMAIL PROTECTED] > Velocity Software, Inc Mailing Address: > 196-D Castro Street P.O. Box 390640 > Mountain View, CA 94041 Mountain View, CA 94039-0640 > > VM Performance Hotline: 650-964-8867 > Fax: 650-964-9012 Web Page: WWW.VELOCITY-SOFTWARE.COM > /************************************************************/
