From: Andrea Arcangeli <andrea@suse.de>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Andrew Theurer <habanero@us.ibm.com>,
linux-kernel@vger.kernel.org,
Marcelo Tosatti <marcelo@conectiva.com.br>
Subject: Re: Linux 2.4.19-rc3 (hyperthreading)
Date: Tue, 30 Jul 2002 01:45:58 +0200 [thread overview]
Message-ID: <20020729234558.GM1201@dualathlon.random> (raw)
In-Reply-To: <20020729203840.GA1201@dualathlon.random>
On Mon, Jul 29, 2002 at 10:38:40PM +0200, Andrea Arcangeli wrote:
> On Mon, Jul 29, 2002 at 10:28:42PM +0100, Alan Cox wrote:
> > On Mon, 2002-07-29 at 20:54, Andrew Theurer wrote:
> > > I would caution against having hyperthreading on by default in the 2.4.19
> > > release. I am seeing a significant degrade in network workloads on P4 with
> > > hyperthreading on. On 2.4.19-pre10, I get 788 Mbps on NetBench, but on
> > > 2.4.19-rc1 (and probably rc3, should know in an hour), I get 690 Mbps. It is
> > > clearly a hyperthreading/interrupt routing issue. On this system (4 x P4),
> >
> > Quite possibly. I've just merged the O(1) scheduler load balancing fixes
> > for the hyperthreading stuff, rc3 uses the old scheduler so that isnt
>
> btw, please make sure to merge my patch, the original one had several
> severe bugs.
and the new one had a bug too :). Please merge the fix I posted to l-k
too thanks.
Andrea
next prev parent reply other threads:[~2002-07-29 23:41 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-29 19:54 Linux 2.4.19-rc3 (hyperthreading) Andrew Theurer
2002-07-29 21:28 ` Alan Cox
2002-07-29 20:38 ` Andrea Arcangeli
2002-07-29 23:45 ` Andrea Arcangeli [this message]
2002-07-29 23:51 ` Rik van Riel
2002-07-30 0:04 ` Andrea Arcangeli
2002-07-30 0:09 ` J.A. Magallon
2002-07-30 0:32 ` Andrea Arcangeli
2002-07-31 3:08 ` Bill Davidsen
2002-07-31 12:43 ` Rik van Riel
2002-07-31 14:16 ` Sam Vilain
2002-08-01 18:29 ` Ingo Oeser
2002-07-29 20:58 ` Andrew Theurer
2002-07-30 0:37 ` Alan Cox
2002-07-29 23:42 ` Andrew Theurer
2002-07-30 0:56 ` James Bourne
2002-07-30 0:47 ` James Bourne
2002-07-30 1:15 ` Andrew Theurer
2002-07-30 3:09 ` James Bourne
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