Hi! > > Is there any way to speed up the resume from suspend to disk? Currently, on my > laptop it suspends in ~15s (wrote about 360MB) but resumes in ~120s and after > that I'm still left with ~361MB in swap: > > total used free shared buffers cached > Mem: 3333472 1139332 2194140 0 12808 473084 > -/+ buffers/cache: 653440 2680032 > Swap: 2104472 369428 1735044 > > Right now I'm better off with a cold boot. That's way too slow. Are you using in-kernel swsusp, or userland s2disk? dmesgM > > Although I did not study the kernel code to see how things really work, I > suspect on resume only necessary kernel data is loaded from swap and the > userland tasks are left with the page fault mechanism to bring back their own > data, which leads to an I/O storm on the swap device. Maybe changing the I/O > scheduler from CFQ would help? or better yet, is there any way to tell the > kernel to bring back all the pages from swap in one quick move? That would be > something I want to put in my resume scripts. > > $ uname -a > Linux mdontu-dell 2.6.32-gentoo-r3 #1 SMP PREEMPT Mon Feb 1 02:36:01 EET 2010 > x86_64 Intel(R) Core(TM)2 CPU T5500 @ 1.66GHz GenuineIntel GNU/Linux > > I've installed Windows XP just for a test, started a few apps (like visual > studio, mplayer, etc.) and then suspended/hibernated (~15s). It took roughly > 15s to come back. > > Thanks, > > PS: I'm editing this e-mail as I do tests and I just noticed that my /sbin > directory is empty. rmmod is there and I needed it to reload the b43 driver > which generally does not feel well after a suspend/resume. A reboot fixed it. > Weird ... > Seems like your system has problems... -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
