From: Robert Love <rml@tech9.net>
To: Andrew Morton <akpm@osdl.org>
Cc: Con Kolivas <kernel@kolivas.org>,
piggin@cyberone.com.au, linux-kernel@vger.kernel.org
Subject: Re: as / scheduler question
Date: 28 Jul 2003 16:30:29 -0700 [thread overview]
Message-ID: <1059435029.931.33.camel@localhost> (raw)
In-Reply-To: <20030728160117.3f679f01.akpm@osdl.org>
On Mon, 2003-07-28 at 16:01, Andrew Morton wrote:
> What does "requeues all threads at 25ms" mean?
I think he is talking about the timeslice granularity Ingo readded in
his latest patch (TIMESLICE_GRANULARITY, which is 25ms with HZ=1000).
Every 25ms the currently running task is preempted if there is another
runnable task at its current priority. I.e., tasks at the same priority
are round-robined every 25ms, until there timeslices expire.
> The only dependency we should have there is that kblockd should be scheduled
> promptly after it is woken. It is reniced by -10 so it should be OK.
> Renicing it further or making it SCHED_RR/FIFO would be interesting.
Yep, and I don't think Ingo's patch would effect this.
Robert Love
prev parent reply other threads:[~2003-07-28 23:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-28 23:08 as / scheduler question Con Kolivas
2003-07-28 23:01 ` Andrew Morton
2003-07-28 23:25 ` Con Kolivas
2003-07-28 23:32 ` Robert Love
2003-07-31 6:43 ` Nick Piggin
2003-07-31 6:45 ` Nick Piggin
2003-07-28 23:30 ` Robert Love [this message]
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