From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Mikolaj Krzewicki <mkrzewicki@lycos.nl>
Cc: linuxppc-dev list <linuxppc-dev@lists.linuxppc.org>
Subject: Re: benh performance problem
Date: Wed, 04 Feb 2004 09:24:44 +1100 [thread overview]
Message-ID: <1075847083.17327.31.camel@gaston> (raw)
In-Reply-To: <401FE138.8080807@lycos.nl>
On Wed, 2004-02-04 at 04:58, Mikolaj Krzewicki wrote:
> hi all,
> starting 2.6.0-test9-benh3 i noticed an increased system overhead on my
> ibook 500. Each process eats much more cpu time than in 2.4 or even
> vanilla 2.6.
> gkrellm takes 1% instead of 0.1, xmms 5% instead of ~1% and so on.
> I benchmarked the lot with octave and it indeed runs ~10% slower on the
> benh kernels.
> I would use vanilla 2.6.1 but it won't sleep/wake correctly (at all).
> All pre-2.6.0-test9-benh3 kernels worked fast but would't sleep/wake either.
> I tried to isolate the patch responsible but failed.
> Has anybody come across similar behaviour?
> greetings, M
I switched to HZ=1000, the userland procps utilities (like ps and top)
tend to not properly deal with that, at least earlier versions, afaik.
I suspect it's just display crap.
Alos, you can find a more recent kernel than that :) My bk tree is
currently at 2.6.2-rc3-ben1
Ben.
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2004-02-03 22:24 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-03 17:58 benh performance problem Mikolaj Krzewicki
2004-02-03 22:24 ` Benjamin Herrenschmidt [this message]
2004-02-05 21:50 ` Mikolaj Krzewicki
[not found] ` <40221664.70208@lycos.nl>
2004-02-06 5:14 ` Benjamin Herrenschmidt
2004-02-06 15:25 ` Hollis Blanchard
2004-02-07 21:16 ` Benjamin Herrenschmidt
2004-02-07 9:17 ` Gabriel Paubert
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