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From: Peter Chubb <peter@chubb.wattle.id.au>
To: Willy TARREAU <willy@w.ods.org>
Cc: Soeren Sonnenburg <kernel@nn7.de>,
	Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: xterm scrolling speed - scheduling weirdness in 2.6 ?!
Date: Mon, 5 Jan 2004 14:46:34 +1100	[thread overview]
Message-ID: <16376.56858.132710.846819@wombat.chubb.wattle.id.au> (raw)
In-Reply-To: <20040104205411.GA219@pcw.home.local>

>>>>> "Willy" == Willy TARREAU <willy@w.ods.org> writes:
> >> 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...
>> 
>> For some processes, allowing interrupts back on (hdparm -u1) helps;
>> for others, switching to the deadline elevator helps; neither are
>> complete solutions.

Willy> This is not I/O related since the problem happens even with
Willy> simple programs such as dmesg and seq.

Yes ... the first time you run a program it's fetched from disc and
shows a significant slowdown.  Second and subsequent times, it runs at
normal speed.  At least, that's what *I'm* seeing.

Peter C



  reply	other threads:[~2004-01-05  3:47 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-01-03 18:52 xterm scrolling speed - scheduling weirdness in 2.6 ?! Soeren Sonnenburg
2004-01-03 19:19 ` Willy Tarreau
2004-01-04 20:47   ` Peter Chubb
2004-01-04 20:54     ` Willy TARREAU
2004-01-05  3:46       ` Peter Chubb [this message]
     [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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