From: Andrew Morton <akpm@digeo.com>
To: Ingo Oeser <ingo.oeser@informatik.tu-chemnitz.de>
Cc: piggin@cyberone.com.au, helgehaf@aitel.hist.no, erik@hensema.net,
linux-kernel@vger.kernel.org
Subject: Re: Delaying writes to disk when there's no need
Date: Mon, 31 Mar 2003 16:02:12 -0800 [thread overview]
Message-ID: <20030331160212.57a9646c.akpm@digeo.com> (raw)
In-Reply-To: <20030401013258.G626@nightmaster.csn.tu-chemnitz.de>
Ingo Oeser <ingo.oeser@informatik.tu-chemnitz.de> wrote:
>
> On Mon, Mar 31, 2003 at 02:45:00PM -0800, Andrew Morton wrote:
> > It could have pretty bad failure modes. Short-lived files in /tmp now
> > perform writeout, which needs to be waited on when those files are removed.
>
> /tmp is not a problem, because this can be fixed by using tmpfs
> (I use 2GB of it with 1GB of RAM).
I don't. These files get unlinked before they hit disk.
> The disk is idle, so this is not about performance, but power
> consumption. Spinning up a disk costs around 1-2 seconds, so you
> should come in with at least the amount of data you write in 1-2
> seconds for a spun down disk.
The requirements for portable computers are totally different. You'd turn
the whole thing off for them.
next prev parent reply other threads:[~2003-03-31 23:51 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-26 20:31 Erik Hensema
2003-03-27 9:06 ` Helge Hafting
2003-03-27 11:22 ` Erik Hensema
2003-03-28 23:12 ` Pavel Machek
2003-03-31 12:00 ` Erik Hensema
2003-03-31 13:42 ` Helge Hafting
2003-03-31 14:45 ` Oliver Neukum
2003-03-31 22:02 ` Nick Piggin
2003-03-31 22:22 ` Chris Friesen
2003-03-31 22:35 ` Nick Piggin
2003-03-31 22:51 ` John Bradford
2003-03-31 22:58 ` Nick Piggin
2003-03-31 22:45 ` Andrew Morton
2003-03-31 23:03 ` Nick Piggin
2003-03-31 23:32 ` Ingo Oeser
2003-04-01 0:02 ` Andrew Morton [this message]
2003-04-01 0:43 ` Daniel Pittman
2003-04-01 1:09 ` Andrew Morton
2003-04-01 1:34 ` Daniel Pittman
2003-04-01 1:45 ` Andrew Morton
[not found] ` <3E88EB3D.6020409@cyberone.com.au>
2003-04-01 1:39 ` Andrew Morton
[not found] <20030326204012$188c@gated-at.bofh.it>
[not found] ` <20030327091007$22a5@gated-at.bofh.it>
[not found] ` <20030327113014$37b4@gated-at.bofh.it>
2003-03-28 10:18 ` Tim Connors
2003-03-30 17:38 ` Helge Hafting
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