On 09/03/2010 03:21 PM, Michael Tokarev wrote:
Hello. I noticed that window7, unlike windowsXP as I played with previously, poses quite high load on host when idle. On my machine, host cpu usage is about 25% when one single-cpu win7 guest is running with "-usbdevice tablet" option. Here's a typical kvm_stats when such a guest is idling: efer_reload 0 0 exits 991832 695 fpu_reload 3786 0 halt_exits 7759 67 halt_wakeup 7717 67 host_state_reload 613116 495 hypercalls 0 0 insn_emulation 873244 488 insn_emulation_fail 0 0 invlpg 0 0 io_exits 582925 409 irq_exits 30188 8 irq_injections 41093 0 irq_window 0 0 largepages 288 0 mmio_exits 16718 0 mmu_cache_miss 217 0 mmu_flooded 0 0 mmu_pde_zapped 0 0 mmu_pte_updated 0 0 mmu_pte_write 0 0 mmu_recycled 0 0 mmu_shadow_zapped 269 0 mmu_unsync 0 0 nmi_injections 0 0 nmi_window 0 0 pf_fixed 20630 0 pf_guest 0 0 remote_tlb_flush 176 0 request_irq 0 0
That's pretty good for an idle guest. What does the guest think it is doing? The Windows performance monitor? -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain. -- 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
