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2026-04-08 - 08:13
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Wed Apr 08, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1888921670,4sleep3626199cyclictest19:35:223
63902860,4sleep20-21swapper/223:45:222
253272770,5sleep00-21swapper/000:25:280
6261996635,4cyclictest41-21ksoftirqd/300:37:213
6261996530,4cyclictest41-21ksoftirqd/320:28:103
6261996530,4cyclictest41-21ksoftirqd/320:28:103
6261996528,4cyclictest41-21ksoftirqd/323:46:583
131452650,4sleep00-21swapper/000:00:190
6261996324,4cyclictest41-21ksoftirqd/321:49:543
6261996232,3cyclictest41-21ksoftirqd/321:50:113
6261996228,4cyclictest41-21ksoftirqd/320:07:403
6261996225,4cyclictest41-21ksoftirqd/320:42:503
6261996225,4cyclictest41-21ksoftirqd/319:41:573
6261996225,4cyclictest41-21ksoftirqd/319:41:573
626199622,18cyclictest0-21swapper/319:13:583
134491620,6ptp4l0-21swapper/220:35:132
6261996131,4cyclictest41-21ksoftirqd/319:19:243
6261996130,7cyclictest41-21ksoftirqd/322:17:023
6261996130,4cyclictest41-21ksoftirqd/320:16:293
6261996130,4cyclictest41-21ksoftirqd/300:32:013
6261996128,4cyclictest41-21ksoftirqd/320:33:343
6261996120,4cyclictest41-21ksoftirqd/319:32:473
625899615,16cyclictest29158-21cat23:25:220
134491610,5ptp4l0-21swapper/222:00:212
6261996031,7cyclictest41-21ksoftirqd/323:15:183
6261996031,4cyclictest41-21ksoftirqd/319:50:003
6261996028,4cyclictest41-21ksoftirqd/300:29:213
6261996025,8cyclictest41-21ksoftirqd/322:46:453
625899604,17cyclictest7382-21ntpq19:10:220
6261995928,4cyclictest41-21ksoftirqd/319:52:543
6261995926,6cyclictest41-21ksoftirqd/300:05:153
6261995925,4cyclictest41-21ksoftirqd/321:01:323
625899597,17cyclictest26877-21ntpq21:00:210
6261995832,7cyclictest41-21ksoftirqd/320:55:233
6261995828,4cyclictest41-21ksoftirqd/323:13:263
6261995828,4cyclictest41-21ksoftirqd/321:14:423
6261995826,7cyclictest41-21ksoftirqd/321:45:013
6261995824,9cyclictest41-21ksoftirqd/321:35:003
6261995823,6cyclictest41-21ksoftirqd/323:30:183
625899586,12cyclictest28361-21ntpq19:55:220
625899583,9cyclictest23461-21egrep20:55:140
6261995729,9cyclictest41-21ksoftirqd/320:20:233
6261995727,4cyclictest41-21ksoftirqd/319:28:203
6261995726,4cyclictest41-21ksoftirqd/319:58:233
6261995722,4cyclictest41-21ksoftirqd/319:20:223
6261995720,7cyclictest41-21ksoftirqd/320:00:143
625899574,11cyclictest4155-21wc22:30:250
61902570,4sleep10-21swapper/119:10:001
134491570,3ptp4l0-21swapper/223:16:242
134491570,3ptp4l0-21swapper/219:20:262
6261995631,4cyclictest41-21ksoftirqd/322:52:223
6261995631,4cyclictest41-21ksoftirqd/322:52:223
6261995627,9cyclictest41-21ksoftirqd/323:35:213
6261995627,8cyclictest41-21ksoftirqd/322:30:273
6261995627,3cyclictest41-21ksoftirqd/321:18:283
625899563,15cyclictest0-21swapper/022:45:250
625899563,10cyclictest16239-21latency_hist20:40:010
625899562,10cyclictest22654-21timerwakeupswit20:50:280
239962560,4sleep00-21swapper/022:05:190
134491560,4ptp4l0-21swapper/122:16:471
134491560,3ptp4l0-21swapper/119:20:341
6261995530,3cyclictest41-21ksoftirqd/320:37:273
6261995526,8cyclictest41-21ksoftirqd/322:20:193
6261995523,8cyclictest41-21ksoftirqd/322:00:273
6261995520,7cyclictest41-21ksoftirqd/323:25:003
6261995519,4cyclictest41-21ksoftirqd/323:40:163
625899555,16cyclictest3977-21missed_timers23:40:210
625899552,11cyclictest19272-21latency_hist00:15:000
134491550,4ptp4l0-21swapper/222:31:082
134491550,3ptp4l0-21swapper/121:15:301
134491550,14ptp4l0-21swapper/219:15:202
6261995431,7cyclictest41-21ksoftirqd/323:25:263
6261995423,3cyclictest41-21ksoftirqd/322:07:113
6261995422,3cyclictest41-21ksoftirqd/321:37:063
6261995421,8cyclictest41-21ksoftirqd/320:50:203
6261995419,9cyclictest41-21ksoftirqd/320:10:213
6261995419,6cyclictest41-21ksoftirqd/321:25:003
6261995418,3cyclictest41-21ksoftirqd/322:39:443
625899544,17cyclictest0-21swapper/023:12:020
134491540,4ptp4l0-21swapper/222:23:502
6261995322,4cyclictest41-21ksoftirqd/323:05:193
6261995322,4cyclictest41-21ksoftirqd/322:40:183
134491530,4ptp4l0-21swapper/221:49:502
134491530,4ptp4l0-21swapper/220:22:312
134491530,4ptp4l0-21swapper/200:20:032
134491530,4ptp4l0-21swapper/120:01:201
134491530,3ptp4l0-21swapper/221:53:512
134491530,3ptp4l0-21swapper/200:37:432
6261995219,8cyclictest41-21ksoftirqd/323:00:253
625899522,10cyclictest0-21swapper/000:35:010
134491520,4ptp4l0-21swapper/222:13:462
134491520,4ptp4l0-21swapper/121:24:541
134491520,4ptp4l0-21swapper/120:25:051
134491520,4ptp4l0-21swapper/120:25:051
134491520,13ptp4l0-21swapper/221:43:222
6261995117,7cyclictest41-21ksoftirqd/323:50:143
6261995113,4cyclictest41-21ksoftirqd/321:05:233
625899516,8cyclictest27229-21python23:20:250
625899514,14cyclictest19855-21runrttasks21:55:210
134491510,4ptp4l0-21swapper/219:26:482
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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