lkml.org 
[lkml]   [2008]   [Mar]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectvolanoMark 12% regression with 2.6.25-rc6
    From
    Date
    Comparing with 2.6.25-rc5, volanoMark has 12% regression with 2.6.25-rc6
    on my 8-core stoakley.


    Bisect tracked it down to:

    e22ecef1d2658ba54ed7d3fdb5d60829fb434c23 is first bad commit
    commit e22ecef1d2658ba54ed7d3fdb5d60829fb434c23
    Author: Ingo Molnar <mingo@elte.hu>
    Date: Fri Mar 14 22:16:08 2008 +0100

    sched: fix fair sleepers

    Fair sleepers need to scale their latency target down by runqueue
    weight. Otherwise busy systems will gain ever larger sleep bonus.

    Signed-off-by: Ingo Molnar <mingo@elte.hu>
    Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>


    In the patch, vruntime -= calc_delta_fair(sysctl_sched_latency, &cfs_rq->load).

    Should we call __sched_period to get the first parameter of calc_delta_fair in case
    there are more than 5 tasks in the runqueue?

    -yanmin




    \
     
     \ /
      Last update: 2008-03-18 10:19    [W:0.021 / U:0.124 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site