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    SubjectRe: bisected: 'perf top' causing soft lockups under Xen
    On Thu, 2012-02-09 at 18:32 -0800, Steven Noonan wrote:
    > [ 88.517599] [<ffffffff81085a86>] smp_call_function_single+0xec/0xfd

    This looks like its waiting for an IPI to complete..

    There's no actual BUGS or WARNs in the output, just the soft lockup
    thing saying things are taking a bit of time (clearly 15s waiting for an
    IPI isn't quite normal).

    I've no idea why this wouldn't work on Xen, nor do the trace have any
    Xen specific muck in them.

     \ /
      Last update: 2012-02-10 18:31    [W:0.023 / U:179.304 seconds]
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