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2026-08-04 - 10:09
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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 rack3slot6.osadl.org (updated Tue Aug 04, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
692421300,5chrt6921-21apt20:25:001
117339910171,20cyclictest14-21ksoftirqd/019:10:120
117339910171,20cyclictest14-21ksoftirqd/019:10:120
11733999973,16cyclictest14-21ksoftirqd/022:55:110
11733999967,19cyclictest14-21ksoftirqd/022:00:160
1125029924,25sleep00-21swapper/019:06:470
11733999866,18cyclictest0-21swapper/020:50:150
11733999663,19cyclictest14-21ksoftirqd/020:35:130
999729431,17sleep10-21swapper/119:05:131
11733999366,16cyclictest14-21ksoftirqd/022:40:120
11733999267,16cyclictest14-21ksoftirqd/000:20:150
11733999265,18cyclictest14-21ksoftirqd/022:10:120
11733999262,16cyclictest0-21swapper/022:50:240
11733999259,19cyclictest14-21ksoftirqd/021:55:140
11738999019,54cyclictest0-21swapper/122:10:131
11738998919,53cyclictest0-21swapper/119:25:241
11733998959,21cyclictest14-21ksoftirqd/019:40:130
11733998856,22cyclictest14-21ksoftirqd/021:10:150
11733998856,18cyclictest0-21swapper/023:35:140
11733998757,20cyclictest14-21ksoftirqd/021:35:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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