lkml.org 
[lkml]   [2009]   [Sep]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    SubjectRe: [RFC] respect the referenced bit of KVM guest pages?
    From
    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/

    \
     
     \ /
      Last update: 2009-09-13 18:33    [W:3.227 / U:0.076 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site