linux-kernel - Re: NAK new drivers without proper power management?

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Message-ID: <20070210204004.GO12958@stusta.de>
Date:	Sat, 10 Feb 2007 21:40:04 +0100
From:	Adrian Bunk <bunk@...sta.de>
To:	Lee Revell <rlrevell@...-job.com>
Cc:	nigel@...el.suspend2.net, Robert Hancock <hancockr@...w.ca>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Jeff Garzik <jeff@...zik.org>
Subject: Re: NAK new drivers without proper power management?

On Fri, Feb 09, 2007 at 09:22:48PM -0500, Lee Revell wrote:
> On 2/9/07, Nigel Cunningham <nigel@...el.suspend2.net> wrote:
> >On Fri, 2007-02-09 at 20:59 -0500, Lee Revell wrote:
> >> On 2/9/07, Robert Hancock <hancockr@...w.ca> 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

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