On Mon 2012-10-29 10:58:19, Borislav Petkov wrote: > On Mon, Oct 29, 2012 at 09:59:59AM +0100, Jiri Kosina wrote: > > You might or might not want to do that. Dropping caches around suspend > > makes the hibernation process itself faster, but the realtime response > > of the applications afterwards is worse, as everything touched by user > > has to be paged in again. Also note that page-in is slower than reading hibernation image, because it is not compressed, and involves seeking. > Right, do you know of a real use-case where people hibernate, then > resume and still care about applications response time right afterwards? Hmm? When I resume from hibernate, I want to use my machine. *Everyone* cares about resume time afterwards. You move your mouse, and you don't want to wait for X to be paged-in. > Besides, once everything is swapped back in, perf. is back to normal, > i.e. like before suspending. Kernel will not normally swap anything in automatically. Some people do swapoff -a; swapon -a to work around that. (And yes, maybe some automatic-swap-in-when-there's-plenty-of-RAM would be useful.). Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>