I've also heard that older versions of Windows don't put the CPU to "idle mode" even when there is nothing to do. It is a known problem with older Windows kernels. Anyway, try to install the latest virtio drivers for Windows if you don't already have. On 12/7/2012 9:18 PM, Robert Dinse wrote: > About the only thing you can do is not run Windows, or at least that > version, XP does the same thing, continuouslys spins the CPU when there aren't > any user processes using time. I've heard this is resolved in Windows-7 but > haven't tried it personally. > > -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- > Eskimo North Linux Friendly Internet Access, Shell Accounts, and Hosting. > Knowledgeable human assistance, not telephone trees or script readers. > See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874. > > On Fri, 7 Dec 2012, Shawn Everett wrote: > >> Date: Fri, 7 Dec 2012 12:02:14 -0800 >> From: Shawn Everett <shawn at tandac.com> >> Reply-To: Discussion about the virtualization on CentOS > <centos-virt at centos.org> >> To: centos-virt at centos.org >> Subject: [CentOS-virt] (no subject) >> >> Hi All, >> >> I have recently installed CentOS 6.3 with QEMU+KVM for Virtualization. >> >> I have successfully created a Windows 2003 VM with 4GB of RAM. The host >> server is an HP ML350 G8 with 24GB RAM and 24 cores. Details of one of >> the cores is shown below: >> >> processor : 23 >> vendor_id : GenuineIntel >> cpu family : 6 >> model : 45 >> model name : Intel(R) Xeon(R) CPU E5-2620 0 @ 2.00GHz >> stepping : 7 >> cpu MHz : 1200.000 >> cache size : 15360 KB >> physical id : 1 >> siblings : 12 >> core id : 5 >> cpu cores : 6 >> apicid : 43 >> initial apicid : 43 >> fpu : yes >> fpu_exception : yes >> cpuid level : 13 >> wp : yes >> flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca >> cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx >> pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology >> nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 >> ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 x2apic popcnt aes xsave avx lahf_lm >> ida arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid >> bogomips : 3989.86 >> clflush size : 64 >> cache_alignment : 64 >> address sizes : 46 bits physical, 48 bits virtual >> power management: >> >> On an otherwise completely idle system I've noticed the load to be 1.0 to >> 1.5 range. Running "top" shows the culprit to be: qemu-kvm. >> >> Is this normal behavior? I would have expected the load to be pretty light. >> >> Stopping the VM restores the load to normal once again. >> >> Is there anything I can do to reduce the load? >> >> Shawn >> >> _______________________________________________ >> CentOS-virt mailing list >> CentOS-virt at centos.org >> http://lists.centos.org/mailman/listinfo/centos-virt >> > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > http://lists.centos.org/mailman/listinfo/centos-virt >