RE: question on sched-rt group allocation cap: sched_rt_runtime_us

From: Mike Galbraith
Date: Sun Sep 06 2009 - 11:10:03 EST

On Sun, 2009-09-06 at 07:53 -0700, Anirban Sinha wrote:
> > Seems kjournald can end up depending on kblockd/3, which ain't
> > going anywhere with that 100% RT hog in the way,
> I think in the past AKPM's response to this has been "just don't do
> it", i.e, don't hog the CPU with an RT thread.

Oh yeah, sure. Best to run RT oinkers on isolated cpus. It just
surprised me that the 100% compute RT cpu became involved in IO.


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