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2026-05-31 - 11:52
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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 20 highest latencies:
System rackcslot3.osadl.org (updated Sun May 31, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811040rcu_preempt21515-21awk22:47:581
81810rcu_preempt19-21ksoftirqd/122:24:331
81770rcu_preempt19-21ksoftirqd/123:33:081
89950750irq/17-ehci_hcd0-21swapper/121:20:021
81730rcu_preempt19-21ksoftirqd/122:56:061
81710rcu_preempt19-21ksoftirqd/123:28:391
81710rcu_preempt0-21swapper/021:23:080
81700rcu_preempt2426-21apt-get19:07:500
81700rcu_preempt0-21swapper/023:56:310
81700rcu_preempt0-21swapper/023:15:070
81700rcu_preempt0-21swapper/022:07:580
81700rcu_preempt0-21swapper/000:32:580
81690rcu_preempt25967-21sh22:56:130
81690rcu_preempt0-21swapper/023:41:180
81680rcu_preempt9516-1kworker/0:2H21:49:490
81680rcu_preempt5638-21ntp_states22:18:021
81680rcu_preempt27945-21ssh21:59:040
81680rcu_preempt17305-21munin-run00:42:400
81680rcu_preempt0-21swapper/021:18:140
81670rcu_preempt19-21ksoftirqd/121:57:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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