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Date: Mon, 28 Jan 2002 17:40:22 -0200 (BRST)
From: Rik van Riel <riel@conectiva.com.br>
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To: Vincent Sweeney <v.sweeney@barrysworld.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, <linux-kernel@vger.kernel.org>
Subject: Re: PROBLEM: high system usage / poor SMP network performance
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Message-ID: <Pine.LNX.4.33L.0201281739190.32617-100000@imladris.surriel.com>
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On Mon, 28 Jan 2002, Vincent Sweeney wrote:

> > >     CPU0 states: 27.2% user, 62.4% system,  0.0% nice,  9.2% idle
> > >     CPU1 states: 28.4% user, 62.3% system,  0.0% nice,  8.1% idle
> >
> > The important bit here is     ^^^^^^^^ that one. Something is causing
> > horrendous lock contention it appears.
>
> I've switched a server over to the default eepro100 driver as supplied
> in 2.4.17 (compiled as a module). This is tonights snapshot with about
> 10% higher user count than above (2200 connections per ircd)

Hummm ... poll() / select() ?  ;)

> I will try the profiling tomorrow

readprofile | sort -n | tail -20

kind regards,

Rik
-- 
"Linux holds advantages over the single-vendor commercial OS"
    -- Microsoft's "Competing with Linux" document

http://www.surriel.com/		http://distro.conectiva.com/

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