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2026-08-12 - 08:36
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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 rackdslot4.osadl.org (updated Wed Aug 12, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1213522670,5sleep012130-21od19:07:460
2314722440,26sleep10-21swapper/119:09:001
2307422340,4sleep323086-21sh19:09:393
896122210,7sleep28958-21rm19:06:392
2429521490,2sleep10-21swapper/122:45:221
142282680,2sleep30-21swapper/319:11:023
138491650,1ptp4l401ktimersoftd/323:00:173
73022600,5sleep09-21ksoftirqd/021:05:360
4483995913,9cyclictest33-21ksoftirqd/221:25:212
4483995819,9cyclictest33-21ksoftirqd/219:10:552
4483995713,9cyclictest33-21ksoftirqd/223:45:292
65842540,2sleep00-21swapper/019:12:230
138491540,1ptp4l401ktimersoftd/320:41:023
138491540,1ptp4l401ktimersoftd/320:41:023
4483995328,5cyclictest33-21ksoftirqd/223:50:192
161192520,2sleep10-21swapper/122:30:181
138491520,1ptp4l391rcuc/322:15:303
4483994717,8cyclictest33-21ksoftirqd/222:20:222
4483994711,7cyclictest33-21ksoftirqd/223:30:242
4483994617,8cyclictest33-21ksoftirqd/221:55:012
4483994515,9cyclictest33-21ksoftirqd/223:55:202
4483994515,3cyclictest33-21ksoftirqd/220:50:222
4483994514,9cyclictest33-21ksoftirqd/222:15:242
4482994516,3cyclictest25-21ksoftirqd/119:10:151
138491450,0ptp4l401ktimersoftd/323:51:463
4483994414,6cyclictest33-21ksoftirqd/200:30:222
4483994413,5cyclictest33-21ksoftirqd/223:30:002
4482994429,5cyclictest25-21ksoftirqd/100:29:031
138491440,0ptp4l401ktimersoftd/321:53:243
448399439,6cyclictest33-21ksoftirqd/200:35:272
4483994337,3cyclictest33-21ksoftirqd/200:10:002
4483994317,3cyclictest33-21ksoftirqd/200:05:002
4483994314,7cyclictest33-21ksoftirqd/220:00:202
448399430,2cyclictest121rcu_preempt22:10:242
4483994219,5cyclictest33-21ksoftirqd/222:50:202
4483994215,6cyclictest33-21ksoftirqd/222:05:162
4483994213,7cyclictest33-21ksoftirqd/223:00:142
4482994237,3cyclictest25-21ksoftirqd/119:40:001
138491420,0ptp4l401ktimersoftd/323:30:293
138491420,0ptp4l401ktimersoftd/322:00:173
138491420,0ptp4l401ktimersoftd/319:54:243
138491420,0ptp4l401ktimersoftd/300:19:053
448399415,7cyclictest33-21ksoftirqd/200:15:002
4483994135,3cyclictest33-21ksoftirqd/222:30:002
4483994112,6cyclictest33-21ksoftirqd/221:00:192
4483994111,3cyclictest33-21ksoftirqd/223:05:222
4483994110,7cyclictest33-21ksoftirqd/200:25:272
4482994135,3cyclictest25-21ksoftirqd/119:50:011
448399405,4cyclictest33-21ksoftirqd/219:15:182
4483994035,3cyclictest33-21ksoftirqd/219:25:142
448399401,6cyclictest33-21ksoftirqd/223:40:152
448399401,3cyclictest121rcu_preempt19:55:002
4483994012,7cyclictest33-21ksoftirqd/200:20:142
448399400,2cyclictest121rcu_preempt22:00:172
4482994033,4cyclictest25-21ksoftirqd/120:50:001
448399399,3cyclictest33-21ksoftirqd/220:15:222
4483993924,12cyclictest33-21ksoftirqd/220:29:592
448399391,4cyclictest33-21ksoftirqd/219:45:242
448399391,3cyclictest121rcu_preempt20:30:202
448399390,5cyclictest121rcu_preempt20:40:112
448399390,5cyclictest121rcu_preempt20:40:112
448299398,4cyclictest25-21ksoftirqd/123:35:191
4484993834,3cyclictest41-21ksoftirqd/321:34:593
4484993825,11cyclictest41-21ksoftirqd/321:40:013
448399389,3cyclictest33-21ksoftirqd/221:57:082
448399387,4cyclictest33-21ksoftirqd/220:25:002
448399386,9cyclictest33-21ksoftirqd/222:30:282
448399385,5cyclictest33-21ksoftirqd/223:15:002
448399384,4cyclictest33-21ksoftirqd/223:20:242
448399383,5cyclictest33-21ksoftirqd/222:35:252
448399383,5cyclictest33-21ksoftirqd/221:20:012
4483993834,3cyclictest33-21ksoftirqd/220:10:002
4483993833,3cyclictest33-21ksoftirqd/221:25:002
4483993833,3cyclictest33-21ksoftirqd/221:10:142
4483993833,3cyclictest33-21ksoftirqd/219:55:202
4483993833,3cyclictest33-21ksoftirqd/219:40:002
4482993833,3cyclictest25-21ksoftirqd/120:00:001
4482993833,3cyclictest25-21ksoftirqd/119:25:001
4482993833,2cyclictest25-21ksoftirqd/120:20:001
448299380,6cyclictest6374-21irqrtprio21:05:201
4484993733,2cyclictest41-21ksoftirqd/321:30:003
4484993732,3cyclictest41-21ksoftirqd/323:00:003
4484993731,4cyclictest41-21ksoftirqd/323:12:323
4484993731,3cyclictest41-21ksoftirqd/321:05:153
448399374,2cyclictest121rcu_preempt19:30:212
448399373,4cyclictest33-21ksoftirqd/221:40:162
4483993732,3cyclictest33-21ksoftirqd/221:45:232
4483993732,3cyclictest33-21ksoftirqd/220:55:282
4483993731,3cyclictest33-21ksoftirqd/221:10:002
4483993730,4cyclictest33-21ksoftirqd/220:36:592
448399371,6cyclictest33-21ksoftirqd/219:20:252
448399371,5cyclictest33-21ksoftirqd/222:55:132
448399370,7cyclictest33-21ksoftirqd/222:40:172
448299375,2cyclictest121rcu_preempt20:50:251
4482993733,2cyclictest25-21ksoftirqd/122:55:001
448299373,2cyclictest121rcu_preempt23:05:241
4482993732,3cyclictest25-21ksoftirqd/119:40:221
4482993731,3cyclictest25-21ksoftirqd/121:00:001
138491370,1ptp4l401ktimersoftd/320:59:243
138491370,0ptp4l401ktimersoftd/322:10:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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