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2026-07-19 - 14:19
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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 Sun Jul 19, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
869223924,0sleep00-21swapper/007:25:120
859623725,0sleep10-21swapper/107:24:091
873923626,0sleep20-21swapper/207:25:462
190422927,0sleep30-21swapper/307:23:113
90039977,0cyclictest17707-21awk08:18:180
8305070,0irq/26-0000:00:3207-17auditd10:03:033
339970,0migration/313242-21latency_hist09:23:033
90159966,0cyclictest17756-40yum-updatesd-he11:28:372
90049960,0cyclictest0-21swapper/112:25:261
90049960,0cyclictest0-21swapper/110:16:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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