On Sunday 13 August 2006 18:07, Waite, Dick wrote: > We switched yesterday to z/VM 5.2 and now the SLE 10.0 machines > are very unhappy with the FCP SCSI disks. The SuSE SLES 9.3 machines, on > the same SCSI's are happy, no issues seen so far.
You should check if you have APAR VM63838 installed. (PTF UM31710) See http://www.vm.ibm.com/perf/qebsm.html for some details. In a nutshell if you have a z890 or higher and z/VM 5.2+ and a linux kernel 2.6.16+ the improved qdio buffer management is used, which reduces the CP overhead. There was a problem in z/VM which could lead to several strange symptoms. Also check your micro code level (see the link for details) Hope this helps. -- Mit freundlichen Grüßen / Best Regards Christian Borntraeger Linux Software Engineer zSeries Linux & Virtualization ---------------------------------------------------------------------- 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
