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2026-03-10 - 06:02
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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 rack1slot8.osadl.org (updated Tue Mar 10, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27995999152,835cyclictest1878-21strings19:25:201
2799499847775,65cyclictest0-21swapper/019:25:200
2799599460386,42cyclictest0-21swapper/119:10:051
2799499378306,45cyclictest0-21swapper/019:10:050
277382287264,16sleep00-21swapper/019:07:510
279949911713,98cyclictest0-21swapper/023:12:590
279949910786,15cyclictest2646-21ssh21:59:590
27994999927,44cyclictest0-21swapper/021:12:000
27994999911,60cyclictest7941-21ssh23:05:590
27995999621,39cyclictest0-21swapper/120:22:591
27995999320,37cyclictest0-21swapper/100:11:591
27995999316,37cyclictest0-21swapper/123:11:591
27995999315,42cyclictest0-21swapper/122:43:591
228699930,4rtkit-daemon2285-21rtkit-daemon21:29:140
27995999222,37cyclictest0-21swapper/120:01:591
27995999117,37cyclictest0-21swapper/121:07:591
228699900,4rtkit-daemon2285-21rtkit-daemon22:59:311
27995998918,38cyclictest0-21swapper/121:34:591
27995998518,35cyclictest0-21swapper/100:27:591
27994998513,57cyclictest0-21swapper/019:18:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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