Anyone please commits or provides any useful insights? Really appreciate~ Hailong > -----Original Message----- > From: Hailong Yang [mailto:hailong.yang1115@xxxxxxxxx] > Sent: Tuesday, May 15, 2012 6:48 PM > To: kvm@xxxxxxxxxxxxxxx > Subject: Descriptions about KVM performance counters > > Dear all, > > Is there a brief description or any document about the meanings of kvm > performance events traced by 'perf' command? Some of events are hard to > guess what they are standing for. And also is there any correlation or exact > mapping between the output of 'kvm_stat' and the perf kvm events? Another > question is, since the kvm guest vm is executed as a user level process, does > that mean I can only account for the user level performance events when I am > trying to profile the performance of guest VM with 'perf' command? > > [root@dell06 ~]# perf list | grep kvm > kvmmmu:kvm_mmu_pagetable_walk [Tracepoint > event] > kvmmmu:kvm_mmu_paging_element [Tracepoint > event] > kvmmmu:kvm_mmu_set_accessed_bit [Tracepoint > event] > kvmmmu:kvm_mmu_set_dirty_bit [Tracepoint > event] > kvmmmu:kvm_mmu_walker_error [Tracepoint > event] > kvmmmu:kvm_mmu_get_page > [Tracepoint event] > kvmmmu:kvm_mmu_sync_page [Tracepoint > event] > kvmmmu:kvm_mmu_unsync_page [Tracepoint > event] > kvmmmu:kvm_mmu_zap_page > [Tracepoint event] > kvm:kvm_entry [Tracepoint > event] > kvm:kvm_hypercall [Tracepoint > event] > kvm:kvm_pio [Tracepoint > event] > kvm:kvm_cpuid [Tracepoint > event] > kvm:kvm_apic [Tracepoint > event] > kvm:kvm_exit [Tracepoint > event] > kvm:kvm_inj_virq [Tracepoint > event] > kvm:kvm_inj_exception [Tracepoint > event] > kvm:kvm_page_fault [Tracepoint > event] > kvm:kvm_msr [Tracepoint > event] > kvm:kvm_cr [Tracepoint > event] > kvm:kvm_pic_set_irq [Tracepoint > event] > kvm:kvm_apic_ipi [Tracepoint > event] > kvm:kvm_apic_accept_irq [Tracepoint > event] > kvm:kvm_set_irq [Tracepoint > event] > kvm:kvm_ioapic_set_irq [Tracepoint > event] > kvm:kvm_msi_set_irq [Tracepoint > event] > kvm:kvm_ack_irq [Tracepoint > event] > kvm:kvm_mmio [Tracepoint > event] > > [root@dell06 ~]# kvm_stat > kvm statistics > > efer_reload 0 0 > exits 11777822 258 > fpu_reload 158860 1 > halt_exits 931986 70 > halt_wakeup 70117 2 > host_state_reload 3780899 70 > hypercalls 0 0 > insn_emulation 5203509 178 > insn_emulation_fail 0 0 > invlpg 0 0 > io_exits 2580247 0 > irq_exits 1610751 8 > irq_injections 1930867 71 > irq_window 79641 0 > largepages 2501 0 > mmio_exits 183399 0 > mmu_cache_miss 604 0 > mmu_flooded 0 0 > mmu_pde_zapped 0 0 > mmu_pte_updated 0 0 > mmu_pte_write 1000 0 > mmu_recycled 0 0 > mmu_shadow_zapped 748 0 > mmu_unsync 0 0 > nmi_injections 0 0 > nmi_window 0 0 > pf_fixed 44196 0 > pf_guest 0 0 > remote_tlb_flush 519 0 > request_irq 0 0 > signal_exits 0 0 > tlb_flush 0 0 > > > Best Regards > > Hailong -- 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
