Improving resume speed

Chow Loong Jin hyperair at gmail.com
Wed Feb 25 15:40:14 UTC 2009


On Sat, 2009-02-21 at 14:48 -0500, Mackenzie Morgan wrote:
> On Saturday 21 February 2009 11:23:32 am (``-_-´´) -- BUGabundo wrote:
> > Jaunty had/has the objective to have a fast startup (<25 secs),
> > But the current technique to resume hibernated machines (using the kernel 
> mode) is too slow, and doesnt use compression.
> > pm-utils (pm-hibernate via s2disk) currently does this, and have a much 
> nicer UI (it shows progress), but unfortunately it got broken last weekend on 
> jaunty [1].
> 
> Kernel modesetting for graphics was mentioned as a possibility for Karmic.  
> That should make the flicker time for graphics after resuming from suspend 
> shorten considerably.
> 
I actually think flicker time for graphics is the least of our concerns
regarding resume time. It is true that it does flicker in Intrepid, but
that lasts at most 5 seconds, compared to the minute and a half I have
to wait for my system to pull its RAM out of the swap using the kernel
mode. s2disk does this in 20 seconds, inclusive of flicker time. 
-- 
Chow Loong Jin
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