| commit | b82d9fdd848abfbe7263a4ecd9bbb55e575100a6 | |
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | |
| Fri, 9 Nov 2007 21:39:39 +0000 (9 22:39 +0100) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Fri, 9 Nov 2007 21:39:39 +0000 (9 22:39 +0100) | ||
| tree | 7d4c525cc4bd633c84abcfd8d934c84e5dc9ce7c | treesnapshot (tar.gz zip) |
| parent | 3c90e6e99b08f01d5684a3a07cceae6a543e4fa8 | commitdiff |
sched: avoid large irq-latencies in smp-balancing
SMP balancing is done with IRQs disabled and can iterate the full rq.
When rqs are large this can cause large irq-latencies. Limit the nr of
iterations on each run.
This fixes a scheduling latency regression reported by the -rt folks.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Tested-by: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
SMP balancing is done with IRQs disabled and can iterate the full rq.
When rqs are large this can cause large irq-latencies. Limit the nr of
iterations on each run.
This fixes a scheduling latency regression reported by the -rt folks.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Tested-by: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| include/linux/sched.h | diffblobblamehistory | |
| kernel/sched.c | diffblobblamehistory | |
| kernel/sysctl.c | diffblobblamehistory |