On Wednesday, 11/17/2004 at 09:21 EST, "Mrohs, Ray" <[EMAIL PROTECTED]> wrote: > The only time we saw idle SLES8 instances hog a system is when we brought up our > z/VM 4.3 and it's guests under a 4.2 1st level at our DR site. 12 Linux > instances > pegged the CPU at 100%. We replaced the 1st level CP nucleus with 4.3, and then > everything was normal. We didn't investigate what the incompatibility was, but > it shows that some seemingly innocuous combinations of software can cause strange > behavior.
Ray, I wouldn't characterize the choice of CP level as an "innocuous combination". Each release of z/VM since z/VM 4.2 has had focus on improving the performance of Linux guests. Just as with hardware, the choice of CP level should be a key element of a DR configuration. Alan Altmark z/VM Development IBM Endicott ---------------------------------------------------------------------- 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
