Messages in this thread | | | Date | Fri, 25 Nov 2011 22:51:36 -0800 | From | Andy Isaacson <> | Subject | Re: [PATCH 4/5] mm: compaction: Determine if dirty pages can be migreated without blocking within ->migratepage |
| |
On Thu, Nov 24, 2011 at 12:21:44PM +0000, Mel Gorman wrote: > On Thu, Nov 24, 2011 at 02:19:43AM +0100, Andrea Arcangeli wrote: > > Yes also note, ironically this is likely to be a better test for this > > without the __GFP_MOVABLE in block_dev.c. Even if we want it fixed, > > maybe another source that reduces the non movable pages may be needed then. > > > > I'm also running other tests to avoid tuning for just this test cases. > Right now, the list looks like; > > 1. postmark with something creating anonymous mappings in the background > 2. plain USB writing while creating anonymous mappings
I've been testing the original case that started this thread -- writing multiple GB to a USB attached, FAT, very slow SD card.
I'm currently running 7f80850d + "mm: Do not stall in synchronous compaction for THP allocations" Mel's original patch. With this patch I cannot reproduce the hangs that I saw. I haven't retried without the patch to confirm that they're reproducible, though.
someone asked about CONFIG_NUMA; I have CONFIG_NUMA=y.
I can reboot this weekend; what patches should I test with next?
-andy
| |