From: Bill Davidsen <davidsen@tmr.com>
To: Richard Gooch <rgooch@ras.ucalgary.ca>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: faster boots?
Date: Mon, 8 Apr 2002 14:31:41 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.3.96.1020408141616.22382A-100000@gatekeeper.tmr.com> (raw)
In-Reply-To: <200204081732.g38HWUU15453@vindaloo.ras.ucalgary.ca>
On Mon, 8 Apr 2002, Richard Gooch wrote:
> Bill Davidsen writes:
> > On Sun, 7 Apr 2002, Richard Gooch wrote:
> >
> >
> > > But I *want* to write while the drive is spun down. And leave it spun
> > > down until the system is RAM starved (or some threshold is reached).
> >
> > The threshold I hit is how much think time I want to risk. I have
> > no problem spinning down the drive after inactivity, but the idea of
> > investing several hours making little changes in a program or
> > proposal document and then maybe losing them... batteries are just
> > not that expensive.
>
> It's not $$$ I'm concerned about. It's mass.
The "I" in my posting referred to my personal preference which is safety
over what to me is a minor inconvenience.
After looking at disk accesses for a while I *think* diddling bdflush
parameters will prevent disk writes for quite a while if you don't do
reads of uncached data. So far I'm just catting /proc/partitions once a
minute and doing a diff to the previous. looks like a write every ten
minutes or so, what I set in bdflush, probably of syslog mumbling, since
the system is relatively quiescent at the moment.
Does anyone have a thought on power consumption of flash chips? I have a
20MB compact flash I use as an auxilary backup for critical stuff, "just
in case" and I bet I could put enough on a 64MB to keep the hard drive
spun down for hours, if I were interested in doing so.
--
bill davidsen <davidsen@tmr.com>
CTO, TMR Associates, Inc
Doing interesting things with little computers since 1979.
next prev parent reply other threads:[~2002-04-08 18:34 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-04 23:54 faster boots? joeja
2002-04-05 0:21 ` Alan Cox
2002-04-05 1:00 ` Jeremy Jackson
2002-04-05 0:26 ` Andrew Morton
2002-04-05 2:18 ` Richard Gooch
2002-04-05 2:51 ` Andrew Morton
2002-04-05 3:00 ` Benjamin LaHaise
2002-04-05 3:21 ` Alan Cox
2002-04-05 5:38 ` Richard Gooch
2002-04-05 12:49 ` Alan Cox
2002-04-05 16:33 ` Richard Gooch
2002-04-05 23:02 ` Itai Nahshon
2002-04-05 23:07 ` Benjamin LaHaise
2002-04-06 0:07 ` Itai Nahshon
2002-04-06 0:29 ` Benjamin LaHaise
2002-04-07 14:42 ` Pavel Machek
2002-04-08 0:48 ` Itai Nahshon
2002-04-08 0:57 ` Richard Gooch
2002-04-08 1:14 ` Andrew Morton
2002-04-08 4:17 ` Andre Hedrick
2002-04-08 9:57 ` Pavel Machek
2002-04-08 16:43 ` Jamie Lokier
2002-04-08 16:48 ` Benjamin LaHaise
2002-04-08 21:09 ` Pavel Machek
2002-04-09 0:56 ` Jamie Lokier
2002-04-09 22:22 ` Pavel Machek
2002-04-12 10:44 ` Jamie Lokier
2002-04-12 11:42 ` Pavel Machek
2002-04-12 14:29 ` Jamie Lokier
2002-04-14 19:40 ` Pavel Machek
2002-04-15 13:34 ` Philipp Matthias Hahn
2002-04-08 17:08 ` Mark Mielke
2002-04-08 17:49 ` Rene Rebe
2002-04-08 18:02 ` G . Sumner Hayes
2002-04-08 6:02 ` Oliver Neukum
2002-04-08 17:06 ` Richard Gooch
2002-04-08 16:13 ` Martin Dalecki
2002-04-08 15:16 ` Bill Davidsen
2002-04-08 17:32 ` Richard Gooch
2002-04-08 18:31 ` Bill Davidsen [this message]
2002-04-08 18:40 ` David Lang
2002-04-08 18:56 ` Richard B. Johnson
2002-04-08 19:06 ` David Lang
2002-04-08 19:27 ` Richard B. Johnson
2002-04-08 8:03 ` Helge Hafting
2002-04-08 12:38 ` Rogier Wolff
2002-04-08 14:41 ` Bill Davidsen
2002-04-08 9:55 ` Pavel Machek
2002-04-08 12:15 ` Rogier Wolff
2002-04-08 12:09 ` Rogier Wolff
2002-04-05 6:14 ` Eric W. Biederman
2002-04-05 12:45 ` Alan Cox
2002-04-05 13:04 ` Bill Davidsen
2002-04-05 21:33 ` Benjamin LaHaise
2002-04-05 5:26 ` Richard Gooch
2002-04-05 7:45 ` dean gaudet
2002-04-05 18:43 ` Jeremy Jackson
2002-04-05 0:44 ` Piotr Esden-Tempski
2002-04-05 13:37 ` Mauricio Nuñez
2002-04-05 1:11 ` Ross Vandegrift
2002-04-05 1:55 ` Bernd Eckenfels
2002-04-05 12:56 ` Bill Davidsen
2002-04-10 1:20 ` Mike Touloumtzis
2002-04-05 19:08 ` Mark H. Wood
2002-04-05 2:10 joeja
2002-04-05 7:44 ` Helge Hafting
2002-04-05 12:13 ` Thomas 'Dent' Mirlacher
2002-04-05 15:14 ` Luigi Genoni
2002-04-05 8:00 willy tarreau
2002-04-05 13:06 ` Bill Davidsen
2002-04-05 13:21 ` willy tarreau
2002-04-05 15:29 ` Bill Davidsen
2002-04-05 16:20 ` willy tarreau
2002-04-05 23:10 ` Itai Nahshon
[not found] <3CACEF18.CE742314@zip.com.au.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.33.0204042330270.10358-100000@twinlark.arctic.org.suse.lists.linux.kernel>
2002-04-05 8:41 ` Andi Kleen
2002-04-05 18:23 Torrey Hoffman
2002-04-06 17:53 Re: " Alan Cox
2002-04-06 19:01 ` Joe
[not found] <Pine.LNX.4.33.0204051403200.7124-100000@mhw.ULib.IUPUI.Edu >
2002-04-07 20:10 ` Stevie O
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