Re: NAK new drivers without proper power management?

From: Adrian Bunk
Date: Sat Feb 10 2007 - 15:40:24 EST


On Fri, Feb 09, 2007 at 09:22:48PM -0500, Lee Revell wrote:
> On 2/9/07, Nigel Cunningham <nigel@xxxxxxxxxxxxxxxxxx> wrote:
> >On Fri, 2007-02-09 at 20:59 -0500, Lee Revell wrote:
> >> On 2/9/07, Robert Hancock <hancockr@xxxxxxx> wrote:
> >> > I would disagree that it's a peripheral issue, it's pretty core these
> >> > days, at least for any hardware that you can stuff in a laptop (though
> >a
> >> > fair number of desktops get suspended and resumed these days too).
> >>
> >> Servers are still the most important Linux market, and don't care
> >> about suspend/resume. I would consider implementing suspend./resume
> >> for a driver that will only be used in server or HPC class hardware a
> >> waste of valuable development resources.
> >
> >Not necessarily. Imagine suspending to disk in order to replace a faulty
> >card. That could be way faster and less disruptive than shutting down
> >normally and loosing caches and so on.
> >
>
> Hmm. If uptime is critical I would make sure to have redundant
> systems anyway and I would just reboot the thing. I would not expect
> the suspend/resume paths on server class hardware like 10gig ethernet,
> Infiniband adapters, or high end SCSI to be particularly well tested.
>...

10gig ethernet will be commodity hardware 5 years from now like
1gig ethernet today where you can get cards for 12 Euro and switches for
40 Euro.

> Lee

cu
Adrian

--

"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed

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