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2025-12-21 - 16:01
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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 Dec 21, 2025 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
906825041,0sleep30-21swapper/307:07:023
911123827,0sleep20-21swapper/207:07:292
931523026,0sleep10-21swapper/107:09:531
902822723,0sleep00-21swapper/007:06:310
94609960,0cyclictest0-21swapper/209:31:012
94599960,0cyclictest0-21swapper/109:39:321
94599960,0cyclictest0-21swapper/109:24:421
339960,0migration/327864-21sh09:47:333
339960,0migration/314963-21sh11:29:433
339960,0migration/314100-21sh09:58:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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