From: Dave Jones <davej@suse.de>
To: "Serguei I. Ivantsov" <administrator@svitonline.com>
Cc: <linux-kernel@vger.kernel.org>
Subject: Re: 2.4.x & Celeron = very slow system
Date: Sun, 19 Aug 2001 15:22:40 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.30.0108191519430.22917-100000@Appserv.suse.de> (raw)
In-Reply-To: <1021859034.20010819160618@svitonline.com>
On Sun, 19 Aug 2001, Serguei I. Ivantsov wrote:
> With 2.4.x kernel my system (Celeron (Coppermine) 850Mhz (100x8.5)
> 256Mb i810) behaves like slow i386sx.
>
> For example, when I extract 25MB gzip file on 2.2.19 kernel - it
> takes about 12 seconds, but with 2.4.8(9) - 6(!) MINUTES on the SAME
> system...
>
> The only idea is that 2.4.x kernel turns off cache (L1 & L2) on
> processor (on my cpu). How can I check it? Any ideas?
No, we don't do any such frobbing of the cache control registers.
It is enabled in the BIOS right ?
Another thing that it might be, is if you're using ACPI instead of
APM, the cpu-idle may be causing the CPU to run slower than usual
though throttling.
Although, I've not seen this happen to the extent of what you're
reporting. If you are running with an ACPI kernel, try booting
with an APM kernel instead to see if it makes a difference.
regards,
Dave.
--
| Dave Jones. http://www.suse.de/~davej
| SuSE Labs
next prev parent reply other threads:[~2001-08-19 13:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-19 13:06 2.4.x & Celeron = very slow system Serguei I. Ivantsov
2001-08-19 13:22 ` Dave Jones [this message]
2001-08-19 15:51 ` Re[2]: " Serguei I. Ivantsov
2001-08-19 15:56 ` Dave Jones
[not found] <no.id>
2001-08-19 13:55 ` Alan Cox
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