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2026-05-10 - 08:47
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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
Characteristics of the 20 highest latencies:
System rackdslot4.osadl.org (updated Sun May 10, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591208174,23phc2sys0-21swapper/319:07:343
94762206172,22sleep10-21swapper/119:09:591
92032204170,22sleep00-21swapper/019:06:310
91532203170,22sleep20-21swapper/219:05:532
947828262,10sleep30-21swapper/319:10:013
977499619,10cyclictest9748-21ls23:30:003
977499606,16cyclictest15360-21cut22:35:183
977499598,9cyclictest26972-21dump-pmu-power00:05:003
288552570,7sleep1977299cyclictest23:00:241
977499558,8cyclictest31423-21grep20:55:283
977499556,11cyclictest20524-21sed23:50:173
977499543,9cyclictest0-21swapper/321:20:173
977499533,17cyclictest0-21swapper/322:00:143
977499505,8cyclictest728-21date22:05:203
977499503,16cyclictest0-21swapper/323:45:163
227762500,2sleep10-21swapper/119:35:171
213992490,6sleep3977499cyclictest22:45:263
977499489,14cyclictest18350-21needreboot22:40:203
977499487,15cyclictest2315-21gnome-shell21:35:583
977499486,15cyclictest21296-21timerandwakeup19:30:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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