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2026-09-05 - 07:04
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackcslot3.osadl.org (updated Sat Sep 05, 2026 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81980rcu_preempt0-21swapper/119:46:101
81790rcu_preempt19-21ksoftirqd/122:26:341
81770rcu_preempt19-21ksoftirqd/123:43:461
81760rcu_preempt31328-21kworker/1:019:16:091
89550730irq/17-ehci_hcd19765-21kworker/0:019:20:450
81730rcu_preempt19-21ksoftirqd/100:14:531
81710rcu_preempt31486-21/usr/sbin/munin21:46:071
81710rcu_preempt0-21swapper/022:11:010
81710rcu_preempt0-21swapper/020:46:030
81700rcu_preempt0-21swapper/023:41:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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