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2026-09-04 - 05:58
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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 Fri Sep 04, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81920rcu_preempt0-21swapper/123:15:571
81820rcu_preempt19-21ksoftirqd/100:01:321
89950810irq/17-ehci_hcd945-21usb-storage19:18:240
81810rcu_preempt4500-21ssh23:04:141
81810rcu_preempt22848-21ssh21:32:081
81800rcu_preempt15744-21diskmemload23:49:011
81790rcu_preempt31940-21ssh22:54:341
81790rcu_preempt15914-21ssh21:20:501
81780rcu_preempt19-21ksoftirqd/100:15:441
81760rcu_preempt3891-1kworker/1:1H23:20:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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