Re: "sched: add vslice" causes horrible interactivity under load
- From: Ingo Molnar <mingo@xxxxxxx>
- Date: Sun, 27 Jan 2008 23:19:16 +0100
* Ingo Molnar <mingo@xxxxxxx> wrote:
while such delays are happening? Please enable CONFIG_SCHED_DEBUG=y
and CONFIG_SCHEDSTATS=y as well before doing the dump. Also please
send your .config.
another thing that might make a difference is to disable (or enable)
the CONFIG_FAIR_GROUP_SCHED feature in the .config.
yet another thing to tune would be to decrease the value of
/proc/sys/kernel/sched_latency, and/or to subtract '4' from the value of
/proc/sys/kernel/sched_features. [it defaults to 7 in v2.6.24]
Ingo
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