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2025-12-29 - 15:18
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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 Mon Dec 29, 2025 12:45:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2040226970,6sleep120404-21cpufreq07:10:011
1878929737,43sleep00-21swapper/007:05:160
2044499947,69cyclictest0-21swapper/007:55:130
20447998555,18cyclictest26-21ksoftirqd/109:30:251
20444998237,28cyclictest14-21ksoftirqd/008:47:590
20447998155,16cyclictest26-21ksoftirqd/110:05:121
20447998054,17cyclictest26-21ksoftirqd/112:25:141
20447997954,15cyclictest26-21ksoftirqd/111:05:111
20444997926,20cyclictest28627-21aten2.4-expect10:30:190
197372790,4sleep10-21swapper/110:05:021
197372790,4sleep10-21swapper/110:05:021
20447997752,16cyclictest26-21ksoftirqd/110:55:151
11202770,6sleep1251rcuc/109:10:481
20447997647,17cyclictest26-21ksoftirqd/111:10:151
20447997551,13cyclictest26-21ksoftirqd/111:50:161
20447997549,17cyclictest26-21ksoftirqd/111:00:151
275902730,4sleep00-21swapper/008:55:260
20447997321,14cyclictest26-21ksoftirqd/107:37:471
20444997336,21cyclictest14-21ksoftirqd/009:30:360
20447997244,18cyclictest26-21ksoftirqd/107:50:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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