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2026-09-03 - 06:46
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack1slot2.osadl.org (updated Thu Sep 03, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271550,0ktimersoftd/21576-21perf19:31:372
865223727,0sleep30-21swapper/319:29:283
855823524,0sleep00-21swapper/019:28:210
876622925,0sleep10-21swapper/119:30:501
8921992423,0cyclictest13285-21turbostat23:01:481
89239999,0cyclictest83050irq/26-0000:00:00:57:152
89239966,0cyclictest83050irq/26-0000:00:23:24:212
89239965,0cyclictest8727-21perl22:02:022
89219960,0cyclictest20327-21diskmemload22:38:401
8305060,0irq/26-0000:00:5579-21munin-run00:31:482
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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