Re: faster boots?

Pavel Machek
2002-04-08T09:57:19Z

Hi!
> 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.

Well, noflushd already seems to work pretty well ;-). But I see kernel
support may be required for SCSI.
Pavel
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