Messages in this thread | | | Date | Mon, 13 Mar 2006 12:13:26 +0100 | From | Andreas Mohr <> | Subject | Re: [ck] Re: Faster resuming of suspend technology. |
| |
Hi,
On Mon, Mar 13, 2006 at 11:43:15AM +0100, Pavel Machek wrote: > On Po 13-03-06 21:35:59, Con Kolivas wrote: > > wouldn't be too hard to add a special post_resume_swap_prefetch() which > > aggressively prefetches for a while. Excuse my ignorance, though, as I know > > little about swsusp. Are there pages still on swap space after a resume > > cycle? > > Yes, there are, most of the time. Let me explain: > > swsusp needs half of memory free. So it shrinks caches (by emulating > memory pressure) so that half of memory if free (and optionaly shrinks > them some more). Pages are pushed into swap by this process. > > Now, that works perfectly okay for me (with 1.5GB machine). I can > imagine that on 128MB machine, shrinking caches to 64MB could hurt a > bit. I guess we'll need to find someone interested with small memory > machine (if there are no such people, we can happily ignore the issue > :-).
Why not simply use the mem= boot parameter? Or is that impossible for some reason in this specific case?
I have a P3/450 256M machine where I could do some tests if really needed.
Andreas Mohr - 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/
| |