Devastating latency on a 3Ghz xeon .. Maybe the raw_spinlock in the
timer base is creating a unbounded latency?
Daniel
( softirq-timer/1-13 |#1): new 66088 us maximum-latency critical section.
=> started at timestamp 1857957769: <__down_mutex+0x5f/0x295>
=> ended at timestamp 1858023857: <_raw_spin_unlock_irq+0x16/0x39>
Call Trace:<ffffffff80144816>{check_critical_timing+491} <ffffffff8047732a>{rt_secret_rebuild+0}
<ffffffff80144adb>{trace_irqs_on+100} <ffffffff80508da5>{_raw_spin_unlock_irq+22}
<ffffffff8013303b>{run_timer_softirq+1916} <ffffffff8012f0d6>{ksoftirqd+241}
<ffffffff8012efe5>{ksoftirqd+0} <ffffffff8013f961>{kthread+218}
<ffffffff8010e9c2>{child_rip+8} <ffffffff8013f887>{kthread+0}
<ffffffff8010e9ba>{child_rip+0}
---------------------------
| preempt count: 00000000 ]
| 0-level deep critical section nesting:
----------------------------------------
=> dump-end timestamp 1858101914
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