Messages in this thread | | | Date | Mon, 14 Sep 2009 01:23:19 +0900 | Subject | Re: [RFC] respect the referenced bit of KVM guest pages? | From | KOSAKI Motohiro <> |
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Hi Jeff,
> A side note - I've been doing some tracing and shrink_active_list is called a humongous number of times (25000-ish during a ~90 kvm run), with a net result of zero pages moved nearly all the time. Your test is rescuing essentially all candidate pages from the inactive list. Right now, I have the VM_EXEC || PageAnon version of your test.
Sorry for the long delayed replay. I made reproduce environment today. but I don't have luck. I didn't reproduce stack refault issue. Could you please explain detailed reproduce way and your analysis way?
My environment is, x86_64 CPUx4 MEM 6G userland: fedora11 kernel: latest mmotm
cgroup size: 128M guest mem: 256M CONFIG_KSM=n
My result, - plenty anon and file fault happen. but it is ideal. it is caused by demand paging. - do_anonymous_page almost doesn't handle stack fault. both host and guest. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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