I really DO hate to bring this up, but.... It really does solve a lot of mysteries to have a performance monitor that collects your linux and VM data.
Right now, i'm looking at some SAP data, Linux on z/VM, a big linux server logs off and the master processor utilization sky rockets, then the i/o from all of the other servers stops for a minute. now i know why service was degraded, and have enough information to understand the problem. Without data, how could i have a clue of which one of 100 common problems caused my problem this time? >Date: Thu, 2 Dec 2004 11:09:27 -0700 >From: "Seader, Cameron" <[EMAIL PROTECTED]> > >I am experiencing the same thing. Its like the guests is not >being = dispatched. > >Very strange. >-Cameron > >-----Original Message----- >=46rom: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of >Brad Johnson >Sent: Wednesday, December 01, 2004 08:42 >Subject: Linux Slowdown > > >Has anyone seen where the Linux Guests under VM just slow >working from a network perspective and then it will work fine. >During the time when the IP network connectivity fails, I have >consoled in via tn3270 and the console just freezes. It will >then restore. It appears that the system is going into a wait >state but I cannot tell. Any help would be appreciated. > >Thanks "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 /************************************************************/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
