lkml.org 
[lkml]   [2006]   [Mar]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH][3/3] mm: swsusp post resume aggressive swap prefetch
Quoting "Rafael J. Wysocki" <rjw@sisk.pl>:

> Hi,
>
> On Sunday 19 March 2006 16:34, Con Kolivas wrote:
> >
> > Swsusp reclaims a lot of memory during the suspend cycle and can benefit
> > from the aggressive_swap_prefetch mode immediately upon resuming.
>
> It slows down the resume on my box way too much. Last time it took 10x more
> time than actually reading the image.
>
> I think the problem is for the userland suspend (which I use) it's done too
> early,
> when the image pages are still in the swap, so they are taken into
> consideration
> by the aggressive prefetch. If that really is the case, the solution would
> be to
> trigger the aggressive prefetch from the userland, if needed, after the
> image
> pages have been released.

I assume this is unique to the userland resume as the in-kernel resume is not
slowed down? If so, is there a way to differentiate the two so we only
aggressively prefetch on kernel resume - is that what you meant by doing it in
the other file?

Cheers,
Con

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

\
 
 \ /
  Last update: 2006-03-20 23:37    [W:0.070 / U:0.908 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site