On Fri, 12 Jan 2007 11:46:22 -0800 (PST)
Christoph Lameter <[email protected]> wrote:
> > While the softlockups and the like went away by enabling interrupts during
> > spinning, as mentioned in http://lkml.org/lkml/2007/1/3/29 ,
> > Andi thought maybe this is exposing a problem with zone->lru_locks and
> > hence warrants a discussion on lkml, hence this post. Are there any
> > plans/patches/ideas to address the spin time under such extreme conditions?
>
> Could this be a hardware problem? Some issue with atomic ops in the
> Sun hardware?
I'd assume so. We don't hold lru_lock for 33 seconds ;)
Probably similar symptoms are demonstrable using other locks, if a
suitable workload is chosen.
Increasing PAGEVEC_SIZE might help. But we do allocate those things
on the stack.
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