From: "Paul E. McKenney" <paulmck@us.ibm.com>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Dipankar Sarma <dipankar@in.ibm.com>,
Arjan van de Ven <arjanv@redhat.com>,
tiwai@suse.de, Robert Love <rml@ximian.com>,
Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] RCU for low latency (experimental)
Date: Wed, 24 Mar 2004 16:43:02 -0800 [thread overview]
Message-ID: <20040325004302.GF1301@us.ibm.com> (raw)
In-Reply-To: <20040324233629.GK2065@dualathlon.random>
On Thu, Mar 25, 2004 at 12:36:29AM +0100, Andrea Arcangeli wrote:
> On Wed, Mar 24, 2004 at 12:02:08PM -0800, Paul E. McKenney wrote:
> > If the "nice" value does not matter, this seems reasonable, at least for
> > some value of 10. ;-)
>
> the nice value should no matter for this.
I agree that there would not likely be any differences except in
corner-case OOM situations, and that we would probably not want
to rely on such differences in any case.
> btw, (just to avoid misunderstanding) the number 10 is
> MAX_SOFTIRQ_RESTART.
Ah! Thank you for the clarification -- I thought you were
talking about the number of RCU callbacks to be executed in each
rcu_do_batch() invocation. And, yes, after MAX_SOFTIRQ_RESTART,
ksoftirqd does re-enable preemption.
Thanx, Paul
next prev parent reply other threads:[~2004-03-25 0:48 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-23 10:17 [PATCH] RCU for low latency (experimental) Dipankar Sarma
2004-03-23 10:25 ` Andrew Morton
2004-03-23 10:41 ` Dipankar Sarma
2004-03-23 10:35 ` Arjan van de Ven
2004-03-23 10:45 ` Dipankar Sarma
2004-03-23 12:31 ` Andrea Arcangeli
2004-03-23 12:40 ` Dipankar Sarma
2004-03-23 12:50 ` Andrea Arcangeli
2004-03-24 17:26 ` Paul E. McKenney
2004-03-24 17:51 ` Andrea Arcangeli
2004-03-24 20:02 ` Paul E. McKenney
2004-03-24 23:36 ` Andrea Arcangeli
2004-03-25 0:43 ` Paul E. McKenney [this message]
2004-03-24 21:39 ` Dipankar Sarma
2004-03-24 22:53 ` Andrea Arcangeli
2004-03-24 23:11 ` Dipankar Sarma
2004-03-24 23:34 ` Andrea Arcangeli
2004-03-24 23:46 ` Dipankar Sarma
2004-03-24 23:51 ` Andrea Arcangeli
2004-03-28 16:53 ` Takashi Iwai
2004-03-28 17:20 ` Dipankar Sarma
2004-03-28 17:28 ` Takashi Iwai
2004-03-29 10:43 ` Takashi Iwai
2004-03-29 12:20 ` Dipankar Sarma
2004-03-23 12:40 ` Arjan van de Ven
2004-03-23 12:29 ` Andrea Arcangeli
2004-03-23 12:34 ` Dipankar Sarma
2004-03-23 12:46 ` Andrea Arcangeli
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