lkml.org 
[lkml]   [2011]   [Dec]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: [RFC PATCH 0/4] Gang scheduling in CFS
    Date
    On Mon, 19 Dec 2011 13:44:02 +0200, Avi Kivity <avi@redhat.com> wrote:
    > On 12/19/2011 01:23 PM, Ingo Molnar wrote:
    > > What's behind this huge speedup? Does ebizzy use user-space
    > > spinlocks perhaps? Could we do something on the user-space side
    > > to get a similar speedup?
    >
    > kvm tries to detect spinlocks (by trapping repeated executions of PAUSE)
    > and yield to a related vcpu. It's far from perfect however, and relies
    > on the spinlock code using PAUSE.
    >
    Avi, is this soft-PLE kind of thing?

    Regards
    Nikunj



    \
     
     \ /
      Last update: 2011-12-19 12:51    [W:0.022 / U:0.352 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site