Messages in this thread | | | Date | Sat, 27 Jun 2009 13:53:07 +0200 | From | Johannes Weiner <> | Subject | Re: [PATCH 0/3] make mapped executable pages the first class citizen |
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On Wed, Jun 24, 2009 at 11:43:21AM +0900, KOSAKI Motohiro wrote: > > On Tue, Jun 23, 2009 at 10:43:57PM +0800, David Howells wrote: > > > Wu Fengguang <fengguang.wu@intel.com> wrote: > > > > > > > David, could you try running this when it occurred again? > > > > > > > > make Documentation/vm/page-types > > > > Documentation/vm/page-types --raw # run as root > > > > > > Okay. I managed to catch it between the first and second OOMs, and ran the > > > command you asked for. > > > > Thank you! > > > > > 0x0000000000000000 142261 555 ________________________________ > > > 0x0000000000000400 6797 26 __________B_____________________ buddy > > > > The buddy+free numbers are pretty high. 26MB PG_buddy pages means much > > more actual free pages. So I bet the 555MB no-flag pages are mostly free pages. > > You mean our VM can make OOM although it have 600MB free pages?
No, it has 600MB free pages after an OOM - which only means that the OOM killer did a good job ;-)
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