On 21/06/11 12:34, Mel Gorman wrote: > On Tue, Jun 21, 2011 at 11:47:35AM +0100, P?draig Brady wrote: >> On 21/06/11 11:39, Mel Gorman wrote: >>> On Tue, Jun 21, 2011 at 10:53:02AM +0100, P?draig Brady wrote: >>>> I tried the 2 patches here to no avail: >>>> http://marc.info/?l=linux-mm&m=130503811704830&w=2 >>>> >>>> I originally logged this at: >>>> https://bugzilla.redhat.com/show_bug.cgi?id=712019 >>>> >>>> I can compile up and quickly test any suggestions. >>>> >>> >>> I recently looked through what kswapd does and there are a number >>> of problem areas. Unfortunately, I haven't gotten around to doing >>> anything about it yet or running the test cases to see if they are >>> really problems. In your case, the following is a strong possibility >>> though. This should be applied on top of the two patches merged from >>> that thread. >>> >>> This is not tested in any way, based on 3.0-rc3 >> >> This does not fix the issue here. >> > > I made a silly mistake here. When you mentioned two patches applied, > I assumed you meant two patches that were finally merged from that > discussion thread instead of looking at your linked mail. Now that I > have checked, I think you applied the SLUB patches while the patches > I was thinking of are; > > [afc7e326: mm: vmscan: correct use of pgdat_balanced in sleeping_prematurely] > [f06590bd: mm: vmscan: correctly check if reclaimer should schedule during shrink_slab] > > The first one in particular has been reported by another user to fix > hangs related to copying large files. I'm assuming you are testing > against the Fedora kernel. As these patches were merged for 3.0-rc1, can > you check if applying just these two patches to your kernel helps? These patches are already present in my 2.6.38.8-32.fc15.x86_64 kernel :( cheers, Pádraig. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>