On Fri, Apr 3, 2009 at 4:18 PM, Maros TIMKO <timko@xxxxxxxx> wrote:>> we are running CentOS 5.2 Xen virtualization system with the latest CentOS> packages with couple of VMs on DELL PowerEdge. "Sometimes" the whole machine> freezes without anything in log files, anything on the console. "Sometimes"> really means we cannot define why or when. Sometimes the machine was idle> with just one VM, sometimes quite busy with couple of VMs.>> Has anybody had the same experience? If yes, any hints on how to resolve it> or how to trace the cause?> The complete freezing of a machine like that sounds like a hardwareissue to me, most likely the memory. Does the machine unfreeze after awhile or do you have to power cycle the server when it happens ? Iwould suggest running a memtest. Regards,Tim -- Tim Verhoeven - tim.verhoeven.be@xxxxxxxxx - 0479 / 88 11 83 Hoping the problem magically goes away by ignoring it is the"microsoft approach to programming" and should never be allowed.(Linus Torvalds)_______________________________________________CentOS-virt mailing listCentOS-virt@xxxxxxxxxxxxxx://lists.centos.org/mailman/listinfo/centos-virt