> So, that means it's our good friend the kernel_lock again. How
> long did the
> system hang for before you killed it?
We've left it for hours without recovery.
> Are you either doing 1) a lot of data
> transfers or 2) a lot of heavily threaded work?
It's 2 processes doing OS-bypass data transfers. So the number of syscalls
and context switches should be minimal. There is a lot of DMA going on, etc
etc.
It might have been doing disk I/O at the time, which would be 2 processes
doing a lot of NFS activity.
-- g
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