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2026-05-24 - 00:05
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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 Sat May 23, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
197021630,3sleep22137899cyclictest07:35:382
2248221610,7sleep22137899cyclictest10:40:012
21378997915,61cyclictest30395-21ls08:35:292
21378996930,7cyclictest33-21ksoftirqd/211:45:262
21378996533,4cyclictest33-21ksoftirqd/211:15:162
21378996526,3cyclictest33-21ksoftirqd/209:05:002
21378996332,3cyclictest33-21ksoftirqd/211:25:592
21378996326,6cyclictest33-21ksoftirqd/207:25:002
21378996326,4cyclictest33-21ksoftirqd/211:44:592
134491630,5ptp4l0-21swapper/312:10:593
21378996232,7cyclictest33-21ksoftirqd/209:35:152
21378996230,5cyclictest33-21ksoftirqd/211:51:412
21378996225,8cyclictest33-21ksoftirqd/210:53:192
21378996221,7cyclictest33-21ksoftirqd/210:15:012
21378996135,3cyclictest33-21ksoftirqd/208:30:252
21378996133,6cyclictest33-21ksoftirqd/212:15:002
21378996131,5cyclictest33-21ksoftirqd/212:35:262
21378996131,3cyclictest33-21ksoftirqd/209:15:262
21378996126,8cyclictest33-21ksoftirqd/209:59:282
21378996122,8cyclictest33-21ksoftirqd/209:52:582
21378996032,3cyclictest33-21ksoftirqd/210:20:262
21378996026,3cyclictest33-21ksoftirqd/207:14:362
21378996025,6cyclictest33-21ksoftirqd/209:10:202
21378996025,6cyclictest33-21ksoftirqd/209:10:202
21378996020,8cyclictest33-21ksoftirqd/207:28:312
21378995932,6cyclictest33-21ksoftirqd/212:09:592
21378995931,7cyclictest33-21ksoftirqd/209:30:152
21378995930,4cyclictest33-21ksoftirqd/211:07:032
21378995928,6cyclictest33-21ksoftirqd/207:52:432
21378995928,3cyclictest33-21ksoftirqd/210:45:012
21378995924,5cyclictest33-21ksoftirqd/207:45:292
21378995923,8cyclictest33-21ksoftirqd/210:03:292
21378995922,8cyclictest33-21ksoftirqd/209:08:532
21378995920,8cyclictest33-21ksoftirqd/212:02:522
21378995919,5cyclictest33-21ksoftirqd/210:55:202
62752580,7sleep02137699cyclictest08:55:160
21378995827,4cyclictest33-21ksoftirqd/210:20:012
134491580,4ptp4l0-21swapper/310:57:073
134491580,4ptp4l0-21swapper/309:30:223
134491580,4ptp4l0-21swapper/008:05:030
21378995727,5cyclictest33-21ksoftirqd/209:20:272
21378995723,9cyclictest33-21ksoftirqd/209:00:002
21378995723,4cyclictest33-21ksoftirqd/209:28:232
21378995718,8cyclictest33-21ksoftirqd/208:00:492
21378995625,5cyclictest33-21ksoftirqd/207:15:272
134491560,4ptp4l0-21swapper/308:28:253
134491560,3ptp4l0-21swapper/312:04:063
134491560,3ptp4l0-21swapper/009:53:460
21378995522,5cyclictest33-21ksoftirqd/208:05:282
21378995521,7cyclictest33-21ksoftirqd/208:17:142
134491550,3ptp4l0-21swapper/309:07:403
134491550,3ptp4l0-21swapper/210:30:272
21378995424,8cyclictest33-21ksoftirqd/207:30:182
21378995421,4cyclictest33-21ksoftirqd/208:50:142
21378995419,5cyclictest33-21ksoftirqd/212:20:202
21378995418,4cyclictest33-21ksoftirqd/211:35:182
174222540,3sleep10-21swapper/108:10:161
21378995323,6cyclictest33-21ksoftirqd/210:25:182
21378995320,5cyclictest33-21ksoftirqd/211:00:152
21378995319,11cyclictest33-21ksoftirqd/209:40:202
21378995319,11cyclictest33-21ksoftirqd/209:40:202
134491530,4ptp4l0-21swapper/107:05:411
134491530,4ptp4l0-21swapper/107:05:411
134491530,3ptp4l0-21swapper/310:15:323
134491530,14ptp4l20390-21python07:05:250
134491530,14ptp4l20390-21python07:05:250
21378995218,6cyclictest33-21ksoftirqd/207:45:012
134491520,3ptp4l0-21swapper/011:15:440
134491520,3ptp4l0-21swapper/009:58:280
2137899514,5cyclictest33-21ksoftirqd/212:20:002
2137899512,7cyclictest0-21swapper/209:45:192
21378995119,4cyclictest33-21ksoftirqd/208:41:422
21378995119,4cyclictest33-21ksoftirqd/208:41:422
134491510,4ptp4l0-21swapper/310:09:113
134491510,4ptp4l0-21swapper/012:33:240
134491510,4ptp4l0-21swapper/009:47:550
134491510,4ptp4l0-21swapper/009:34:160
134491510,3ptp4l0-21swapper/011:02:450
2137899506,2cyclictest33-21ksoftirqd/210:45:282
2137899503,6cyclictest0-21swapper/207:55:252
21378995025,4cyclictest33-21ksoftirqd/211:30:272
21378995023,6cyclictest33-21ksoftirqd/208:45:132
21378995014,3cyclictest33-21ksoftirqd/210:05:232
134491500,5ptp4l25-21ksoftirqd/109:51:421
134491500,4ptp4l0-21swapper/311:19:423
134491500,4ptp4l0-21swapper/011:33:470
134491500,3ptp4l0-21swapper/311:23:313
134491500,3ptp4l0-21swapper/011:49:580
134491500,3ptp4l0-21swapper/011:28:350
134491500,2ptp4l0-21swapper/009:27:440
134491490,3ptp4l0-21swapper/310:54:043
2137899483,3cyclictest33-21ksoftirqd/212:30:182
2137899482,3cyclictest33-21ksoftirqd/207:44:052
134491480,2ptp4l0-21swapper/012:02:260
2137899472,5cyclictest33-21ksoftirqd/211:10:312
2137899472,4cyclictest33-21ksoftirqd/211:55:222
2137899472,3cyclictest121rcu_preempt08:22:192
2137899471,5cyclictest33-21ksoftirqd/212:25:182
2137899471,3cyclictest121rcu_preempt08:13:202
134491470,4ptp4l0-21swapper/308:59:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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