Correct the typo in the subject. > -----Original Message----- > From: kvm-owner@xxxxxxxxxxxxxxx [mailto:kvm-owner@xxxxxxxxxxxxxxx] On > Behalf Of Wu, Feng > Sent: Thursday, October 16, 2014 4:16 PM > To: kvm@xxxxxxxxxxxxxxx > Cc: Xiao Guangrong > Subject: A question about HTL VM-Exit handling time > > Hi folks, > > I run kernel build in the guest and use perf kvm to get some VM-Exit result as > the following: > > Analyze events for all VCPUs: > > VM-EXIT Samples Samples% Time% Min Time > Max Time A > > MSR_WRITE 3613908 57.53% 18.97% 5us > 1362us 9.73 > HLT 1399747 22.28% 74.90% 5us > 432448us 99.24 > CR_ACCESS 961203 15.30% 3.28% 4us > 188us 6.33 > EXTERNAL_INTERRUPT 213821 3.40% 2.25% 4us > 4089us 19.54 > EXCEPTION_NMI 25152 0.40% 0.12% 4us > 71us 9.05 > EPT_MISCONFIG 20104 0.32% 0.15% 8us > 5628us 13.74 > CPUID 19904 0.32% 0.07% 4us > 220us 6.90 > IO_INSTRUCTION 17097 0.27% 0.20% 13us > 1008us 22.08 > PAUSE_INSTRUCTION 10737 0.17% 0.05% 4us > 53us 8.33 > MSR_READ 48 0.00% 0.00% 4us > 8us 5.62 > > Total Samples:6281721, Total events handled time:185457820.41us. > > I also do some other experiments with different workload in the guest, I got the > same results in terms of > HLT VM-Exit handling time. Does anyone know why the handling time for HLT > VM-Exit is so high? Appreciate > You help! > > Thanks, > Feng > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
