From: Robert Love <rml@tech9.net>
To: "Martin J. Bligh" <mbligh@aracnet.com>
Cc: Andrew Morton <akpm@digeo.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: NUMA is bust with CONFIG_PREEMPT=y
Date: 02 Oct 2002 18:15:07 -0400 [thread overview]
Message-ID: <1033596906.27765.39.camel@phantasy> (raw)
In-Reply-To: <389320000.1033596266@flay>
On Wed, 2002-10-02 at 18:04, Martin J. Bligh wrote:
> > I am not one of the 12 people in the world with a NUMA-Q, but I would
> > not like to see you disable kernel preemption.
>
> What does it buy you on a large NUMA box over the low-latency patches?
Latency-wise? Probably very little. But note Andrew is not going to
maintain the low-latency patches through 2.6/3.0 as far as I know.
The reasons I asked for you to keep it were mainly (a) so everything can
support it, and (b) for the useful atomicity/sleeping debugging checks.
And when I get consumer-level NUMA x86-64 in hopefully a few years I
need kernel preemption to work :)
Robert Love
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prev parent reply other threads:[~2002-10-02 22:15 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-02 21:46 Andrew Morton
2002-10-02 21:49 ` Martin J. Bligh
2002-10-02 22:02 ` Robert Love
2002-10-02 22:04 ` Martin J. Bligh
2002-10-02 22:15 ` Robert Love [this message]
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