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2026-07-18 - 11:41
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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 Sat Jul 18, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89950880irq/17-ehci_hcd945-21usb-storage21:03:040
81860rcu_preempt25293-21egrep23:31:551
81850rcu_preempt24121-21ssh00:26:581
81810rcu_preempt29355-21turbostat.cron20:21:351
81800rcu_preempt19868-21latency_hist21:31:401
81790rcu_preempt10426-21sh22:10:141
81780rcu_preempt19-21ksoftirqd/121:42:491
81760rcu_preempt1217-21sh23:46:121
81750rcu_preempt19-21ksoftirqd/123:50:421
81750rcu_preempt0-21swapper/123:13:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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