lkml.org 
[lkml]   [2016]   [Feb]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: Crashes with 874bbfe600a6 in 3.18.25
    Hello, Mike.

    On Tue, Feb 09, 2016 at 06:04:04PM +0100, Mike Galbraith wrote:
    > workqueue: schedule WORK_CPU_UNBOUND work on wq_unbound_cpumask CPUs
    >
    > WORK_CPU_UNBOUND work items queued to a bound workqueue always run
    > locally. This is a good thing normally, but not when the user has
    > asked us to keep unbound work away from certain CPUs. Round robin
    > these to wq_unbound_cpumask CPUs instead, as perturbation avoidance
    > trumps performance.

    I don't think doing this by default for everyone is a good idea. A
    lot of workqueue usages tend to touch whatever the scheduler was
    touching after all. Doing things per-cpu is generally a pretty good
    thing.

    Thanks.

    --
    tejun

    \
     
     \ /
      Last update: 2016-02-09 19:21    [W:4.068 / U:0.092 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site