Or Gerlitz wrote:
Jean-Francois.Neyroud wrote:
If I attemp to query at the same time the performance counters on all
nodes on a cluster ( 40 nodes) .
perfquery causes kernel to be stuck in ib_unregister_mad_agent()
function.
Impossible to send CTRL-C or CTRL-Z to perfquery, it is stuck in the
kernel.
maybe with
$ dmesg -c
$ echo 1 > /proc/sysrq-trigger
$ echo t > /proc/sysrq-trigger
Hi,
Depending on how recent your kernel is, you can also echo d >
/proc/sysrq-trigger which will show the state of currently held locks.
Hope that helps.
Cheers,
Dan
--
/--------------- - - - - - -
| Dan Noe
| http://isomerica.net/~dpn/
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