On Tuesday, November 16, 2010, Pavel Machek wrote: > Hi! > > > > ...but there's enough -- or at least it was enough to fit previous > > > versions. 32-bit machine, so it has highmem. > > > > > > System is in console mode, very lightly loaded. > > > > > > Mem: 2054716k total, 736548k used, 1318168k free, 15368k buffers > > > Swap: 779148k total, 2360k used, 776788k free, 546388k cached > > > > Well, the swap is rather in short supply. Below the 50% of RAM recommendation. > > Well, but the biggest image we can write is not 50% of RAM, but 50% of > lowmem... No, it is not. It's been 50% of RAM for a couple of years now. :-) > and swap is nearly as big as lowmem in this case -- so this > machine is not misconfigured. > > root@amd:/# cat /proc/meminfo > MemTotal: 2054716 kB > MemFree: 192048 kB > Buffers: 97628 kB > Cached: 1427088 kB > SwapCached: 0 kB > Active: 547580 kB > Inactive: 1091744 kB > Active(anon): 57060 kB > Inactive(anon): 58908 kB > Active(file): 490520 kB > Inactive(file): 1032836 kB > Unevictable: 0 kB > Mlocked: 0 kB > HighTotal: 1178440 kB > HighFree: 128092 kB > LowTotal: 876276 kB > LowFree: 63956 kB > SwapTotal: 779148 kB > SwapFree: 779148 kB > > > > thinkpad_acpi: ACPI backlight control delay disabled > > > PM: thaw of devices complete after 539.577 msecs > > > PM: writing image. > > > PM: Free swap pages: 194166 > > > PM: Not enough free swap > > > Restarting tasks ... > > > > > > Aha, and it is the new default /sys/power/image_size .. setting it to > > > 0 lets machine hibernate. I guess the new default is very wrong for > > > highmem machine... > > > > The old default did the wrong thing for everyone with sufficient swap (it made > > the OOM code trigger every time while preparing to create an image), so I think > > the new one it's better overall. > > OOM? No... image_size of 0 should have written "as small image as > possible"; slow, but should not OOM. This is not how it works now. We preallocate memory to create memory pressure, so if image_size is 0, we need to preallocate until we run out of pages that can be freed, which means OOM. Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
