lkml.org 
[lkml]   [2006]   [Nov]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: + sched-use-tasklet-to-call-balancing.patch added to -mm tree
    On Tue, 7 Nov 2006, Ingo Molnar wrote:

    > Per-CPU tasklets are equivalent to softirqs, with extra complexity and
    > overhead ontop of it :-)
    >
    > so please just introduce a rebalance softirq and attach the scheduling
    > rebalance tick to it. But i'd suggest to re-test on the 4096-CPU box,
    > maybe what 'fixed' your workload was the global serialization of the
    > tasklet. With a per-CPU softirq approach we are i think back to the same
    > situation that broke your system before.

    What broke the system was the disabling of interrupts over long time
    periods during load balancing.

    -
    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: 2006-11-07 22:01    [W:0.019 / U:0.844 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site