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2026-04-13 - 11:08
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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 Mon Apr 13, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811030rcu_preempt0-21swapper/122:19:371
81770rcu_preempt13094-1kworker/0:1H21:23:110
81770rcu_preempt0-21swapper/122:37:151
81740rcu_preempt8917-21ssh22:25:380
81740rcu_preempt10230-21diskstats21:25:421
81730rcu_preempt4218-21diskmemload00:23:080
81730rcu_preempt19-21ksoftirqd/121:59:311
81730rcu_preempt19-21ksoftirqd/100:00:261
81730rcu_preempt19-21ksoftirqd/100:00:261
81730rcu_preempt0-21swapper/122:48:501
81720rcu_preempt30253-1kworker/0:1H00:12:540
81710rcu_preempt13855-21rm22:35:101
81710rcu_preempt13361-21ssh00:40:070
81710rcu_preempt0-21swapper/123:51:011
81710rcu_preempt0-21swapper/122:56:231
81710rcu_preempt0-21swapper/100:10:491
81710rcu_preempt0-21swapper/019:35:390
81710rcu_preempt0-21swapper/000:28:400
81700rcu_preempt6294-21apt-get22:20:381
81700rcu_preempt27561-21wc20:35:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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