On Tuesday, 26 September 2006 02:22, Andrew Morton wrote:
> On Tue, 26 Sep 2006 01:21:51 +0200
> Pavel Machek <[email protected]> wrote:
>
> > Hi!
> >
> > On Mon 2006-09-25 16:06:48, Andrew Morton wrote:
> > > On Tue, 26 Sep 2006 00:45:00 +0200
> > > Pavel Machek <[email protected]> wrote:
> > >
> > > > Anyways this boils down to "find which drivers are delaying suspend
> > > > and fix them".
> > >
> > > The first step would be "find some way of identifying where all the time is
> > > being spent".
> > >
> > > Right now, netconsole gets disabled (or makes the machine hang) and most of
> > > these machines don't have serial ports and the printk buffer gets lost
> > > during resume.
> > >
> > > The net result is that the machine takes a long time to suspend and resume,
> > > and you don't have a clue *why*.
> > >
> > > And this is a significant issue, IMO. In terms of
> > > niceness-of-user-interface, being able to suspend in twelve seconds instead
> > > of twenty seven rates fairly highly...
> >
> > Your machines spend 15 seconds in drivers? Ouch, I did not realize
> > _that_.
> >
> > (My machine suspends in 7 seconds, perhaps 2-3 of that are playing
> > with drivers, so I just failed to see where the problem is).
> >
> > Are these your big SMP servers? Any SCSI involved?
>
> It's my long-suffering Vaio laptop.
>
> > Rafael has "fakesuspend" patches somewhere, but you can probably just
> > swapoff -a, then echo disk > /sys/power/state.
Eg. here: http://marc.theaimsgroup.com/?l=linux-acpi&m=115506915023030&q=raw
(with the usage info).
Greetings,
Rafael
--
You never change things by fighting the existing reality.
R. Buckminster Fuller
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