On Wed, Sep 14, 2011 at 09:48:18AM +0200, Stefan Priebe - Profihost AG wrote:
> #0: (&sb->s_type->i_mutex_key#5){+.+.+.}, at: [] do_last+0x287/0x693
This means you are running your heavy load with lockdep enabled. I
can't see how it directly causes your issues, but it will slow anything
down to almost a grinding halt on systems with more than say two cores.
Can you run with CONFIG_DEBUG_LOCK_ALLOC / and CONFIG_PROVE_LOCKING
disabled/ It might be worth if you have other really heavy debugging
options enabled, too.
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