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2026-07-05 - 09:15
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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 Jul 05, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81800rcu_preempt19-21ksoftirqd/121:47:151
81780rcu_preempt19-21ksoftirqd/121:58:411
89950770irq/17-ehci_hcd171rcuc/119:30:351
81770rcu_preempt0-21swapper/121:45:011
81750rcu_preempt19-21ksoftirqd/100:25:431
81750rcu_preempt0-21swapper/023:28:320
81740rcu_preempt19-21ksoftirqd/121:33:341
81730rcu_preempt19-21ksoftirqd/121:24:531
81730rcu_preempt19-21ksoftirqd/100:33:231
81710rcu_preempt0-21swapper/022:10:540
81700rcu_preempt32189-21ssh22:02:000
81700rcu_preempt10045-21/usr/sbin/munin21:25:350
81700rcu_preempt0-21swapper/019:21:010
81700rcu_preempt0-21swapper/000:04:070
81690rcu_preempt24186-21sh00:38:160
81690rcu_preempt0-21swapper/119:10:551
81690rcu_preempt0-21swapper/023:12:290
81680rcu_preempt18086-21ssh00:27:120
81680rcu_preempt0-21swapper/123:15:321
81670rcu_preempt16525-21irqstats21:35:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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