Messages in this thread | | | Date | Tue, 22 Sep 2009 13:55:46 +0100 | From | Mel Gorman <> | Subject | Re: [RFC PATCH 0/3] Fix SLQB on memoryless configurations V2 |
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On Tue, Sep 22, 2009 at 10:33:11AM +0530, Sachin Sant wrote: > Mel Gorman wrote: >> On Mon, Sep 21, 2009 at 01:54:12PM -0400, Christoph Lameter wrote: >> >>> Lets just keep SLQB back until the basic issues with memoryless nodes are >>> resolved. >>> >> >> It's not even super-clear that the memoryless nodes issues are entirely >> related to SLQB. Sachin for example says that there was a stall issue >> with memoryless nodes that could be triggered without SLQB. Sachin, is >> that still accurate? >> > I think there are two different problems that we are dealing with. > > First one is the SLQB not working on a ppc64 box which seems to be specific > to only one machine and i haven't seen that on other power boxes.The patches > that you have posted seems to allow the box to boot, but eventually it hits > the stall issue(related to percpu dynamic allocator not working on ppc64), > which is the second problem we are dealing with. >
Ok, I've sent out V3 of this. It's only a partial fix but it's about as far as it can be brought until the other difficulties are resolved.
> The stall issue seems to be much more critical as it is affecting almost > all of the power boxes that i have tested with (4 in all). > This issue is seen with Linus tree as well and was first seen with > 2.6.31-git5 (0cb583fd..) > > The stall issue was reported here: > http://lists.ozlabs.org/pipermail/linuxppc-dev/2009-September/075791.html >
Can you bisect this please?
-- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab
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