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32cpus
2009 Oct 23
11
soft lockups during live migrate..
Trying to migrate a 64bit PV guest with 64GB running medium to heavy load
on xen 3.4.0, it is showing lot of soft lockups. The softlockups are
causing dom0 reboot by the cluster FS. The hardware has 256GB and 32
CPUs.
Looking into the hypervisor thru kdb, I see one cpu in sh_resync_all()
while all other 31 appear spinning on the shadow_lock. I vaguely remember
seeing some thread on this while