lkml.org 
[lkml]   [2011]   [Sep]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: [RFC] Introduce greedy hrtimer walk on idle
    From
    Date
    On Fri, 2011-09-23 at 16:47 -0700, Venki Pallipadi wrote:
    > On Fri, Sep 23, 2011 at 1:03 PM, Peter Zijlstra <peterz@infradead.org> wrote:
    > > On Fri, 2011-09-23 at 11:54 -0700, Venkatesh Pallipadi wrote:
    > >> Comments?
    > >
    > > Looks to be a possible IRQ latency issue as well, that can be a lot of
    > > timers to run..
    > >
    >
    > We could add some rate limit on how many timers we service this way
    > and/or interrupt/disable-enable in the inner loop.
    > But, this would be a problem with current hrtimer as well. When
    > sched_tick timer is not around, we may end up servicing lot of timers
    > depending on number of them and slack. No?

    Right, still something to consider. We might just have to push down on
    slack for -rt or so when it becomes a problem.


    \
     
     \ /
      Last update: 2011-09-28 15:27    [W:0.021 / U:3.492 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site