Re: faster boots?

From: Mark Mielke (mark@mark.mielke.cc)
Date: Mon Apr 08 2002 - 12:08:49 EST

Not really thinking about how hard it would be to implement, I suggest
that the appropriate place for this to be, would be a mount option.

Just as 'noatime', or 'sync', perhaps a 'delaywrite' option would be a
good choice. An advantage of this approach, is that I could make /tmp
be 'delaywrite+journal' in an effort to improve the efficiency of
/tmp, as I could care less what I lost in /tmp between reboots under
extreme situations.

mark

On Sun, Apr 07, 2002 at 06:14:51PM -0700, Andrew Morton wrote:
> 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).
> >
>
> Yes. The desirable behaviour for laptops is to defer writes
> for a very long time, or until the user says "sync".
>
> Mechanisms need to be put in place so that if there are pending
> writes and the disk happens to be spun up for a read, we take
> advantage of that spinup to push out the pending writes at
> the same time.
>
> This behaviour should be all be enabled by a special "laptop mode"
> switch.
>
> There's nothing particularly hard in all this... I'll do a 2.5
> version at some stage.
>
> -
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/ 

-- 
mark@mielke.cc/markm@ncf.ca/markm@nortelnetworks.com __________________________
.  .  _  ._  . .   .__    .  . ._. .__ .   . . .__  | Neighbourhood Coder
|\/| |_| |_| |/    |_     |\/|  |  |_  |   |/  |_   | 
|  | | | | \ | \   |__ .  |  | .|. |__ |__ | \ |__  | Ottawa, Ontario, Canada

  One ring to rule them all, one ring to find them, one ring to bring them all
                       and in the darkness bind them...

                           http://mark.mielke.cc/

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

This archive was generated by hypermail 2b29 : Mon Apr 15 2002 - 22:00:11 EST