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Re: [PATCH] [RSDL-0.30] sched: rsdl improve latencies with differential nice -1
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From:
Al Boldi <a1426z@...>
To: <linux-kernel@...>
Cc: <ck@...>
Subject:
Re: [PATCH] [RSDL-0.30] sched: rsdl improve latencies with differential nice -1
Date: Tuesday, March 13, 2007 - 3:54 pm
Con Kolivas wrote:
quoted text
> On Wednesday 14 March 2007 03:03, Con Kolivas wrote: > > On Wednesday 14 March 2007 02:31, Con Kolivas wrote: > > > On Monday 12 March 2007 22:26, Al Boldi wrote: > > > > I think, it should be possible to spread this max expiration latency > > > > across the rotation, should it not? > > > > > > Can you try the attached patch please Al and Mike? It "dithers" the > > > priority bitmap which tends to fluctuate the latency a lot more but in > > > a cyclical fashion. This tends to make the max latency bound to a > > > smaller value and should make it possible to run -nice tasks without > > > killing the latency of the non niced tasks. Eg you could possibly run > > > X nice -10 at a guess like we used to in 2.4 days. It's not essential > > > of course, but is a workaround for Mike's testcase. > > > > Oops, one tiny fix. This is a respin of the patch, sorry. > > A few other minor things would need to be updated before this patch is in > a good enough shape to join the rsdl patches. This one will be good for > testing though.
Applied against v0.30 mainline. It only works on prio +16 to +19. Thanks! -- Al -
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Messages in current thread:
Re: [PATCH] [RSDL-0.30] sched: rsdl improve latencies with d...
, Al Boldi
, (Tue Mar 13, 3:54 pm)
Re: [ck] Re: [PATCH] [RSDL-0.30] sched: rsdl improve latenci...
, Con Kolivas
, (Tue Mar 13, 4:27 pm)
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