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2026-03-26 - 20:27
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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 Thu Mar 26, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28615996728,8cyclictest41-21ksoftirqd/308:37:433
28615996629,4cyclictest41-21ksoftirqd/312:25:013
28615996629,4cyclictest41-21ksoftirqd/312:25:013
28615996531,10cyclictest41-21ksoftirqd/307:25:013
28615996430,4cyclictest41-21ksoftirqd/311:45:133
28615996429,4cyclictest41-21ksoftirqd/307:50:003
28615996424,10cyclictest41-21ksoftirqd/307:38:353
134491640,5ptp4l0-21swapper/109:30:151
28615996331,7cyclictest41-21ksoftirqd/311:40:153
28615996325,3cyclictest41-21ksoftirqd/310:15:213
28615996324,8cyclictest41-21ksoftirqd/308:11:473
28615996233,3cyclictest41-21ksoftirqd/309:00:173
28615996227,7cyclictest41-21ksoftirqd/308:21:103
28615996226,7cyclictest41-21ksoftirqd/310:20:233
28615996225,10cyclictest41-21ksoftirqd/309:30:203
28615996132,8cyclictest41-21ksoftirqd/309:10:003
28615996125,8cyclictest41-21ksoftirqd/311:30:153
28615996124,7cyclictest41-21ksoftirqd/311:11:243
28615996031,7cyclictest41-21ksoftirqd/308:40:223
28615996028,8cyclictest41-21ksoftirqd/307:30:193
28615996027,3cyclictest41-21ksoftirqd/309:45:003
28615996024,8cyclictest41-21ksoftirqd/309:24:333
28615996024,7cyclictest41-21ksoftirqd/312:13:383
28615996024,7cyclictest41-21ksoftirqd/310:01:073
28615996023,7cyclictest41-21ksoftirqd/310:55:003
119782600,4sleep20-21swapper/210:00:212
28615995929,7cyclictest41-21ksoftirqd/312:05:163
28615995929,3cyclictest41-21ksoftirqd/311:50:173
28615995925,7cyclictest41-21ksoftirqd/311:00:583
28615995832,4cyclictest41-21ksoftirqd/310:35:003
28615995825,3cyclictest41-21ksoftirqd/311:27:093
28615995821,6cyclictest41-21ksoftirqd/310:05:183
28612995811,24cyclictest1317-21runrttasks12:24:510
28612995811,24cyclictest1317-21runrttasks12:24:510
134491580,4ptp4l0-21swapper/209:27:412
28615995731,6cyclictest41-21ksoftirqd/312:15:253
28615995726,3cyclictest41-21ksoftirqd/311:05:133
134491570,5ptp4l0-21swapper/307:05:043
134491570,5ptp4l0-21swapper/207:08:442
134491570,4ptp4l0-21swapper/311:25:003
2861599562,28cyclictest0-21swapper/309:17:323
2861599562,22cyclictest0-21swapper/307:42:573
28615995620,8cyclictest41-21ksoftirqd/310:25:203
2861499561,53cyclictest0-21swapper/212:00:092
134491560,3ptp4l0-21swapper/311:55:343
134491560,3ptp4l0-21swapper/207:16:332
28615995532,7cyclictest41-21ksoftirqd/311:15:153
2861599552,22cyclictest0-21swapper/309:55:393
2861599546,3cyclictest41-21ksoftirqd/311:00:003
28615995423,7cyclictest41-21ksoftirqd/307:10:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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