From: Stephan von Krawczynski <skraw@ithnet.com>
To: Davide Libenzi <davidel@xmailserver.org>
Cc: "Timothy Covell" <timothy.covell@ashavan.org>,
"Dieter Nützel" <Dieter.Nuetzel@hamburg.de>,
"Robert Love" <rml@tech9.net>,
"Linux Kernel List" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Balanced Multi Queue Scheduler ...
Date: Mon, 31 Dec 2001 00:20:29 +0100 [thread overview]
Message-ID: <200112302320.AAA10992@webserver.ithnet.com> (raw)
In-Reply-To: <Pine.LNX.4.40.0112301212540.935-100000@blue1.dev.mcafeelabs.com>
> On Sun, 30 Dec 2001, Timothy Covell wrote:
>
> > each CPU? And this reminds me of how "make -j3 bzlilo" is slower
than
> > "make -j2 bzlilo".
>
> Running N CPU bound tasks on an M way SMP machine with N > M is
never
> going to improve your performace. On the contrary, expecially with
the
> current scheduler that keeps rotating the three tasks between the
two
> CPUs, you're going to suffer a slight performance degradation.
And can you please post a patch for this?
;-)
Honestly: it _should_ be fixed, there is a better way of doing it, and
this is the base for a patch.
Regards,
Stephan
next prev parent reply other threads:[~2001-12-30 23:21 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-29 5:16 [PATCH] Balanced Multi Queue Scheduler Dieter Nützel
2001-12-29 22:29 ` Davide Libenzi
2001-12-29 22:49 ` Andrew Morton
2001-12-29 23:39 ` Davide Libenzi
2001-12-29 23:38 ` Stephan von Krawczynski
2001-12-30 0:02 ` Davide Libenzi
2001-12-30 2:32 ` Alan Cox
2001-12-30 3:11 ` Dieter Nützel
2001-12-30 19:47 ` Timothy Covell
2001-12-30 20:16 ` Davide Libenzi
2001-12-30 23:20 ` Stephan von Krawczynski [this message]
2001-12-30 23:46 ` Davide Libenzi
2001-12-31 16:37 ` Stephan von Krawczynski
2001-12-31 17:26 ` Davide Libenzi
2001-12-30 20:47 ` J Sloan
2001-12-30 20:53 ` Davide Libenzi
2001-12-30 21:12 ` Alan Cox
2001-12-30 23:16 ` Stephan von Krawczynski
2002-01-14 1:33 ` Bill Davidsen
-- strict thread matches above, loose matches on Subject: below --
2001-12-29 3:53 Davide Libenzi
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