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2025-10-10 - 10:05
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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 Fri Oct 10, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811080rcu_preempt19-21ksoftirqd/121:45:001
81880rcu_preempt19-21ksoftirqd/100:07:481
81780rcu_preempt19-21ksoftirqd/121:53:531
81770rcu_preempt23941-21irqstats23:44:591
81770rcu_preempt16070-21ssh22:32:371
81760rcu_preempt18887-21sendmail-msp20:04:361
81750rcu_preempt27426-21sendmail_mailtr20:35:021
81750rcu_preempt20137-21munin-run20:09:361
81730rcu_preempt20773-21ssh00:39:511
81730rcu_preempt0-21swapper/122:50:011
81720rcu_preempt4125-21diskmemload22:39:580
81720rcu_preempt4125-21diskmemload22:39:580
81720rcu_preempt0-21swapper/123:01:131
81720rcu_preempt0-21swapper/122:09:581
81720rcu_preempt0-21swapper/121:24:251
81720rcu_preempt0-21swapper/000:29:550
81710rcu_preempt30562-21sh21:59:571
81710rcu_preempt16110-21rm00:30:031
81710rcu_preempt13089-21ssh22:27:060
81710rcu_preempt0-21swapper/123:49:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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