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
