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2026-05-21 - 13:26
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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 rack8slot4.osadl.org (updated Thu May 21, 2026 00:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38012022221192,18sleep70-21swapper/719:06:227
38011812219170,39sleep60-21swapper/619:06:046
38012432218187,21sleep30-21swapper/319:06:593
38011512216164,16sleep40-21swapper/419:05:394
38012092210179,19sleep50-21swapper/519:06:285
38012132207177,20sleep00-21swapper/019:06:310
38012322206178,18sleep10-21swapper/119:06:481
38012712205177,18sleep20-21swapper/219:07:222
39139572560,0sleep70-21swapper/722:30:027
380167399361,30cyclictest3883043-21unix_chkpwd21:35:006
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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