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2026-06-21 - 04:36
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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 Sun Jun 21, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
60122790,57sleep10-21swapper/119:05:001
29812229162,22sleep00-21swapper/019:09:110
28712211167,32sleep20-21swapper/219:07:442
138591205171,23phc2sys0-21swapper/319:05:543
2378621480,5sleep1333799cyclictest19:50:191
257142670,5sleep2333899cyclictest00:15:132
138491620,1ptp4l401ktimersoftd/322:47:203
50798610,1rtkit-daemon0-21swapper/100:15:291
165022600,3sleep10-21swapper/120:40:171
138491590,1ptp4l401ktimersoftd/321:19:093
184042580,2sleep00-21swapper/000:00:150
1385915637,11phc2sys0-21swapper/319:10:013
3338995216,34cyclictest0-21swapper/221:33:452
170892510,2sleep00-21swapper/023:55:250
138491500,0ptp4l401ktimersoftd/323:06:373
135191470,6getstats333999cyclictest20:59:283
138491460,0ptp4l401ktimersoftd/322:02:593
3339994527,16cyclictest41-21ksoftirqd/323:25:003
3338994526,16cyclictest33-21ksoftirqd/220:26:232
182012450,4sleep2311rcuc/200:00:132
138491440,0ptp4l401ktimersoftd/322:41:573
138491440,0ptp4l401ktimersoftd/322:38:233
3339994321,3cyclictest41-21ksoftirqd/319:40:133
138491430,0ptp4l401ktimersoftd/321:22:213
3339994135,3cyclictest41-21ksoftirqd/322:15:123
3337994111,28cyclictest0-21swapper/119:45:221
138491410,1ptp4l401ktimersoftd/322:53:343
138491410,1ptp4l401ktimersoftd/322:53:343
135191410,1getstats0-21swapper/319:54:283
3339994035,3cyclictest41-21ksoftirqd/323:42:483
3339994035,3cyclictest41-21ksoftirqd/322:05:153
3339994035,3cyclictest41-21ksoftirqd/321:34:593
138491400,1ptp4l401ktimersoftd/319:25:393
3339993935,3cyclictest41-21ksoftirqd/320:35:233
138491390,0ptp4l401ktimersoftd/321:10:123
3339993831,4cyclictest41-21ksoftirqd/300:37:373
3339993811,3cyclictest41-21ksoftirqd/323:50:003
333999377,3cyclictest41-21ksoftirqd/322:10:163
3339993733,2cyclictest41-21ksoftirqd/323:55:013
3339993733,2cyclictest41-21ksoftirqd/321:40:193
3339993733,2cyclictest41-21ksoftirqd/320:00:003
333999372,2cyclictest121rcu_preempt20:20:013
3338993731,4cyclictest33-21ksoftirqd/222:53:582
3338993731,4cyclictest33-21ksoftirqd/222:53:572
3338993731,4cyclictest33-21ksoftirqd/221:38:482
3338993731,4cyclictest33-21ksoftirqd/220:50:572
3338993711,24cyclictest0-21swapper/222:56:452
3338993711,24cyclictest0-21swapper/222:56:442
3337993730,4cyclictest25-21ksoftirqd/121:20:191
3336993731,4cyclictest9-21ksoftirqd/022:34:510
3339993633,2cyclictest41-21ksoftirqd/323:15:003
3339993632,3cyclictest41-21ksoftirqd/323:00:003
3339993632,3cyclictest41-21ksoftirqd/323:00:003
3339993631,3cyclictest41-21ksoftirqd/323:40:003
3339993631,3cyclictest41-21ksoftirqd/323:28:243
3339993631,3cyclictest41-21ksoftirqd/320:45:193
3339993631,3cyclictest41-21ksoftirqd/319:30:223
3339993630,4cyclictest41-21ksoftirqd/300:15:423
3339993630,3cyclictest41-21ksoftirqd/320:15:013
333999361,6cyclictest41-21ksoftirqd/319:15:173
333999361,3cyclictest121rcu_preempt20:20:173
3338993630,4cyclictest33-21ksoftirqd/221:43:532
3338993630,4cyclictest33-21ksoftirqd/220:05:102
3338993630,4cyclictest33-21ksoftirqd/219:47:152
3337993631,3cyclictest25-21ksoftirqd/122:17:551
3337993630,4cyclictest25-21ksoftirqd/121:35:291
3337993630,4cyclictest25-21ksoftirqd/121:08:051
3336993631,3cyclictest9-21ksoftirqd/023:00:100
3336993630,4cyclictest9-21ksoftirqd/022:14:520
333999354,2cyclictest41-21ksoftirqd/322:30:193
333999353,2cyclictest41-21ksoftirqd/321:00:113
3339993532,2cyclictest41-21ksoftirqd/323:19:593
3339993531,3cyclictest41-21ksoftirqd/300:00:183
3339993531,2cyclictest41-21ksoftirqd/320:30:103
3339993531,2cyclictest41-21ksoftirqd/320:25:183
3339993530,3cyclictest41-21ksoftirqd/322:25:123
3339993530,3cyclictest41-21ksoftirqd/319:47:563
3339993529,4cyclictest41-21ksoftirqd/323:56:003
333999352,2cyclictest121rcu_preempt23:30:243
333899359,25cyclictest0-21swapper/222:10:442
333899357,26cyclictest0-21swapper/222:25:342
3338993530,3cyclictest33-21ksoftirqd/200:30:332
3338993529,4cyclictest33-21ksoftirqd/222:45:432
3338993529,4cyclictest33-21ksoftirqd/221:29:052
3338993529,4cyclictest33-21ksoftirqd/221:22:022
3338993529,4cyclictest33-21ksoftirqd/221:04:462
3338993529,4cyclictest33-21ksoftirqd/219:14:182
3337993530,3cyclictest25-21ksoftirqd/123:01:231
3337993529,4cyclictest25-21ksoftirqd/123:22:531
3337993529,4cyclictest25-21ksoftirqd/122:08:071
3337993528,4cyclictest25-21ksoftirqd/120:54:561
3336993530,3cyclictest9-21ksoftirqd/021:50:130
3336993529,4cyclictest9-21ksoftirqd/022:09:590
3336993529,4cyclictest9-21ksoftirqd/021:43:480
3336993529,4cyclictest9-21ksoftirqd/019:53:190
3336993529,4cyclictest9-21ksoftirqd/019:32:450
3336993529,4cyclictest9-21ksoftirqd/000:06:450
138491350,0ptp4l401ktimersoftd/300:25:163
333999344,3cyclictest41-21ksoftirqd/320:40:133
3339993429,3cyclictest41-21ksoftirqd/321:45:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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