[lkml]   [2006]   [Nov]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
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
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-11-07 22:01    [from the cache]
©2003-2014 Jasper Spaans. hosted at Digital Ocean