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2014 Feb 20
1
disk io in guests causes soft lockups in guests and host processes
Hi,
I have a strange phenomenon that I cannot readily explain so I wonder if
anyone here can shed a light on this.
The host system is a Dell r815 with 64 cores and 256G ram and has centos
6 installed. The five guests are also running centos 6 and are running
as a hadoop cluster. The problem is that I see disk-io spikes in the
vm's which then cause soft lockups in the guest but I also see