From: Fabio Riccardi <fabio@chromium.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.4.5-ac1 won't boot with 4GB bigmem option
Date: Sun, 27 May 2001 14:39:30 -0700 [thread overview]
Message-ID: <3B117412.A196A70C@chromium.com> (raw)
In-Reply-To: <E15482F-0002Mz-00@the-village.bc.nu>
Alan Cox wrote:
> > > mm: critical shortage of bounce buffers.
> >
> > Indeed this message has been pestering me in all the recent .4-acx kernels when
> > the machine is under heavy FS pressure.
> >
> > In these kernels I observe a significative (5-10%) performance degradation as
> > soon as the FS cache fills up all the available memory, at this moment "kswapd"
>
> Its there to prove we had a problem
granted
> > 2.4.2-acx and early 2.4.3-acx kernles were much better in this respect and a lot
> > more stable.
>
> Hit any 2.4 kernel pre 2.4.5 vanilla [maybe fixed] and you will break bigmem
> that way.
I've been using many kernels (I upgrade every week or so) and as far as I can
recollect I started experiencing serious performance problems with the 2.4.4 series.
I'm double checking my data right now with older kernels.
- Fabio
next prev parent reply other threads:[~2001-05-27 21:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-27 20:01 2.4.5-ac1 won't boot with 4GB bigmem option Ben Twijnstra
2001-05-27 21:03 ` Fabio Riccardi
2001-05-27 21:25 ` Alan Cox
2001-05-27 21:39 ` Fabio Riccardi [this message]
2001-05-27 21:21 ` Alan Cox
2001-05-28 7:34 ` Ben Twijnstra
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