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2026-04-29 - 00:22
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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 20 highest latencies:
System rack8slot4.osadl.org (updated Tue Apr 28, 2026 12:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4752302232173,19sleep20-21swapper/207:07:222
4751302232168,20sleep30-21swapper/307:05:543
4753192228166,18sleep70-21swapper/707:08:407
4751912223164,18sleep10-21swapper/107:06:491
4752512217158,18sleep50-21swapper/507:07:425
4752322213182,20sleep40-21swapper/407:07:244
4753952207178,19sleep60-21swapper/607:09:446
4752932206179,18sleep00-21swapper/007:08:170
6251752790,0sleep00-21swapper/011:35:150
47564499380,38cyclictest0-21swapper/707:15:107
47563699331,31cyclictest534746-21apt08:53:394
47563799320,31cyclictest641125-21unin-run12:05:015
47564099310,30cyclictest641072-21sh12:05:016
47564099310,30cyclictest0-21swapper/608:35:136
47564099310,30cyclictest0-21swapper/608:35:136
475633993128,2cyclictest498636-21unin-run07:50:013
47563199310,30cyclictest652205-21cron12:25:012
47563199310,30cyclictest652205-21cron12:25:012
47562799310,30cyclictest475959-21http07:10:151
475644993028,1cyclictest512964-21apt-get08:15:127
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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