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2026-05-05 - 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 50 highest latencies:
System rackdslot1.osadl.org (updated Tue May 05, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16452996932,10cyclictest33-21ksoftirqd/222:00:002
16452996829,8cyclictest33-21ksoftirqd/221:06:212
16452996733,5cyclictest33-21ksoftirqd/200:39:592
16452996732,9cyclictest33-21ksoftirqd/220:20:012
16452996729,8cyclictest33-21ksoftirqd/219:14:212
16452996630,8cyclictest33-21ksoftirqd/220:02:192
16452996626,8cyclictest33-21ksoftirqd/200:02:002
16452996532,9cyclictest33-21ksoftirqd/219:20:222
16452996526,8cyclictest33-21ksoftirqd/223:52:062
16452996526,8cyclictest33-21ksoftirqd/220:36:372
1645299652,34cyclictest0-21swapper/220:30:142
1645299652,33cyclictest0-21swapper/222:25:292
1645299643,35cyclictest0-21swapper/222:21:592
16452996432,6cyclictest33-21ksoftirqd/222:45:132
16452996430,4cyclictest33-21ksoftirqd/223:55:242
16452996426,8cyclictest33-21ksoftirqd/200:18:212
1645299642,34cyclictest0-21swapper/200:30:192
16452996329,9cyclictest33-21ksoftirqd/223:35:182
16452996327,3cyclictest33-21ksoftirqd/222:15:182
16452996325,8cyclictest33-21ksoftirqd/220:07:132
1645299632,33cyclictest0-21swapper/223:22:122
313942620,5sleep20-21swapper/220:50:182
16452996231,5cyclictest33-21ksoftirqd/219:30:182
16452996230,9cyclictest33-21ksoftirqd/223:05:292
16452996227,6cyclictest33-21ksoftirqd/200:10:142
16452996225,7cyclictest33-21ksoftirqd/221:33:212
16452996224,7cyclictest33-21ksoftirqd/223:30:482
1645299622,35cyclictest0-21swapper/221:15:182
1645299622,31cyclictest0-21swapper/222:50:152
16452996223,13cyclictest33-21ksoftirqd/222:44:422
16452996129,5cyclictest33-21ksoftirqd/219:35:142
16452996128,5cyclictest33-21ksoftirqd/223:25:172
16452996128,10cyclictest33-21ksoftirqd/223:10:252
16452996126,5cyclictest33-21ksoftirqd/222:35:002
16452996126,5cyclictest33-21ksoftirqd/222:35:002
134491610,4ptp4l0-21swapper/222:10:082
16452996033,7cyclictest33-21ksoftirqd/222:40:012
16452996028,9cyclictest33-21ksoftirqd/219:40:202
16452996026,6cyclictest33-21ksoftirqd/223:15:182
16452996026,5cyclictest33-21ksoftirqd/222:00:282
16452996024,12cyclictest33-21ksoftirqd/220:13:392
16452996023,7cyclictest33-21ksoftirqd/221:41:112
16452995929,6cyclictest33-21ksoftirqd/223:45:232
16452995927,6cyclictest33-21ksoftirqd/221:50:152
134491590,3ptp4l12846-21df21:20:150
16452995828,5cyclictest33-21ksoftirqd/221:45:222
16452995823,5cyclictest33-21ksoftirqd/219:45:182
16452995722,5cyclictest33-21ksoftirqd/223:00:272
134491570,4ptp4l0-21swapper/121:17:291
134491570,3ptp4l41-21ksoftirqd/321:50:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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