From: Willy TARREAU <willy@w.ods.org>
To: Peter Chubb <peter@chubb.wattle.id.au>
Cc: Willy Tarreau <willy@w.ods.org>,
Soeren Sonnenburg <kernel@nn7.de>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: xterm scrolling speed - scheduling weirdness in 2.6 ?!
Date: Sun, 4 Jan 2004 21:54:11 +0100 [thread overview]
Message-ID: <20040104205411.GA219@pcw.home.local> (raw)
In-Reply-To: <16376.31727.114173.311369@wombat.chubb.wattle.id.au>
Hi Peter,
On Mon, Jan 05, 2004 at 07:47:43AM +1100, Peter Chubb wrote:
> >> So it is like 30 times slower on 2.6. when running for the first
> >> time... this also happens if I do e.g. find ./ and watch the
> >> output pass by...
> >>
> >> This is without preemption on powerpc...
> >>
> >> Anyone else with that problem - ideas of the cause ?
>
> I see a very similar problem ... seems like a process doing disc I.O
> isn't being woken up fast enough after the I/O completes.
>
> For some processes, allowing interrupts back on (hdparm -u1) helps;
> for others, switching to the deadline elevator helps; neither are
> complete solutions.
This is not I/O related since the problem happens even with simple
programs such as dmesg and seq.
Cheers,
willy
next prev parent reply other threads:[~2004-01-04 20:54 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-03 18:52 Soeren Sonnenburg
2004-01-03 19:19 ` Willy Tarreau
2004-01-04 20:47 ` Peter Chubb
2004-01-04 20:54 ` Willy TARREAU [this message]
2004-01-05 3:46 ` Peter Chubb
[not found] <Pine.LNX.4.44.0401031402210.24942-100000@coffee.psychology.mcmaster.ca>
2004-01-03 19:07 ` Soeren Sonnenburg
[not found] <Pine.LNX.4.44.0401031439060.24942-100000@coffee.psychology.mcmaster.ca>
2004-01-03 20:19 ` Soeren Sonnenburg
2004-01-03 21:00 ` Con Kolivas
2004-01-03 21:10 ` Soeren Sonnenburg
2004-01-03 21:15 ` Con Kolivas
2004-01-03 23:35 ` Willy Tarreau
2004-01-04 0:11 ` Soeren Sonnenburg
2004-01-04 1:42 ` Con Kolivas
2004-01-04 3:32 ` Tim Connors
2004-01-04 5:58 ` Con Kolivas
2004-01-06 1:09 ` Peter Osterlund
2004-01-06 1:37 ` Nick Piggin
2004-01-06 2:28 ` Peter Osterlund
2004-01-06 2:50 ` Nick Piggin
2004-01-06 6:27 ` Nick Piggin
2004-01-05 22:25 ` Bryan Whitehead
2004-01-04 8:09 ` Soeren Sonnenburg
2004-01-04 8:49 ` Con Kolivas
2004-01-04 11:13 ` Martin Schlemmer
2004-01-04 11:24 ` Soeren Sonnenburg
2004-01-04 12:45 ` Con Kolivas
2004-01-04 14:42 ` Martin Schlemmer
2004-01-04 18:40 ` mikeg
2004-01-04 22:58 ` szonyi calin
2004-01-04 23:33 ` Willy Tarreau
2004-01-04 23:44 ` Valdis.Kletnieks
2004-01-04 23:47 ` Mike Fedyk
2004-01-05 8:39 ` Soeren Sonnenburg
2004-01-05 20:38 ` Martin Schlemmer
2004-01-05 9:18 ` Soeren Sonnenburg
2004-01-05 17:20 ` Martin Schlemmer
2004-01-05 17:21 ` Willy Tarreau
2004-01-05 9:50 ` Kenneth Johansson
2004-01-05 10:17 ` Soeren Sonnenburg
2004-01-05 8:26 ` Soeren Sonnenburg
2004-01-04 8:54 ` Lincoln Dale
2004-01-04 9:17 ` Nick Piggin
2004-01-04 10:24 ` Soeren Sonnenburg
2004-01-04 11:12 ` Mike Fedyk
2004-01-04 11:17 ` Soeren Sonnenburg
2004-01-04 11:20 ` Mike Fedyk
2004-01-04 11:19 ` Willy Tarreau
2004-01-05 0:48 ` Nick Piggin
2004-01-04 12:07 ` Willy Tarreau
2004-01-05 0:51 ` Nick Piggin
2004-01-05 18:37 ` Willy Tarreau
2004-01-06 0:33 ` Nick Piggin
2004-01-04 10:11 ` Soeren Sonnenburg
2004-01-05 10:31 ` venom
2004-01-03 21:18 ` Willy Tarreau
2004-01-03 21:39 Bob Gill
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