On Fri, 2007-10-26 at 15:32 +0800, Wang, Baojun wrote:
> > Perhaps he has any tasks stuck in 'D' state? If so, SysRq-t output for
> > these would be a good thing to collect. What leads him to suspect the
> > process scheduler, etc. More details are needed.
> The task is S+ state, please see in the attachment tarball, SysRq-t output has
> also been attached, I wish it would help. I doubt it's the CFS problem
> because it's first introduced into the 2.6.23 kernel.
(yeah, but there were a truckload of other changes as well)
Looking at your data, _my_ first suspect would be the 2.6.22->2.6.23
futex changes. I'd revert all of the changes to kernel/futex.c and
kernel/futex_compat.c, and see if the problem went away. If it didn't,
I'd then do a full git bisect to nail it down.
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