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Subject: Re: [RFC] Scheduler queue implementation ...
To: davidel@xmailserver.org (Davide Libenzi)
Date: Mon, 10 Dec 2001 01:52:39 +0000 (GMT)
Cc: alan@lxorguk.ukuu.org.uk (Alan Cox), linux-kernel@vger.kernel.org (lkml),
        torvalds@transmeta.com (Linus Torvalds)
In-Reply-To: <Pine.LNX.4.40.0112091729180.996-100000@blue1.dev.mcafeelabs.com> from "Davide Libenzi" at Dec 09, 2001 05:38:42 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> vmstat together with a lat_ctx 32 32 ... ( long list ), you'll see the run
> queue length barley reach 3 ( with 32 bouncing tasks ).
> It barely reaches 5 with 64 bouncing tasks.

Try 250 apache server processes running a mix of mod_perl and static
content, you'll see quite a reasonable queue size then, and it isnt all
cpu hogs.

Interesting question however. I certainly can't disprove your belief that
the queue will be short enough to be worth using multiqueue for the case
where its a queue per processor.

Alan
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