[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] vpmu=1 and running 'perf top' within a PVHVM guest eventually hangs dom0 and hypervisor has stuck vCPUS. Romley-EP (model=45, stepping=2)

On 03/12/2013 04:54 PM, Boris Ostrovsky wrote:

I think by default perf top runs off timer interrupt so it does not use HW counters. But watchdog is implemented on top of the counters so perhaps it fires the interrupt at a bad time, messing
something up.

I was wrong -- perf top does use performance counters by default.


Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.