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2026-04-26 - 02:00
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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 Sat Apr 25, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
209272226161,20sleep20-21swapper/207:08:382
138591206172,23phc2sys0-21swapper/307:07:563
208442200167,22sleep10-21swapper/107:07:331
207032200167,22sleep00-21swapper/007:05:430
2459021540,2sleep20-21swapper/209:25:212
253132690,5sleep233-21ksoftirqd/211:40:012
193562680,5sleep119359-21irqrtprio08:10:181
213702530,5sleep3401ktimersoftd/309:20:133
138491530,1ptp4l401ktimersoftd/310:08:573
138491510,0ptp4l401ktimersoftd/310:41:343
138491490,0ptp4l401ktimersoftd/311:01:373
138491460,8ptp4l401ktimersoftd/307:40:033
138491450,0ptp4l401ktimersoftd/307:15:273
138491440,0ptp4l401ktimersoftd/312:29:163
21326994315,26cyclictest0-21swapper/209:10:232
138491420,35ptp4l0-21swapper/307:10:013
138491420,0ptp4l401ktimersoftd/307:25:003
50798410,3rtkit-daemon12146-21irqstats09:00:191
21326994013,26cyclictest0-21swapper/211:45:232
21324994035,3cyclictest28416-21cron08:30:000
138591402,6phc2sys41-21ksoftirqd/310:50:163
21325993934,3cyclictest25-21ksoftirqd/110:14:051
21324993931,5cyclictest9-21ksoftirqd/011:57:200
50798380,2rtkit-daemon0-21swapper/107:40:111
21326993831,4cyclictest33-21ksoftirqd/207:40:102
2132799374,16cyclictest8516-21latency_hist07:50:003
21327993731,4cyclictest41-21ksoftirqd/312:22:463
21327993731,4cyclictest41-21ksoftirqd/310:34:553
21327993731,4cyclictest41-21ksoftirqd/309:03:083
21327993730,4cyclictest41-21ksoftirqd/312:38:153
21327993730,4cyclictest41-21ksoftirqd/312:32:493
21327993730,4cyclictest41-21ksoftirqd/308:11:573
21326993730,4cyclictest33-21ksoftirqd/211:15:132
21326993730,4cyclictest33-21ksoftirqd/207:55:032
21326993730,4cyclictest33-21ksoftirqd/207:14:592
21325993730,5cyclictest25-21ksoftirqd/109:29:331
21324993731,4cyclictest9-21ksoftirqd/007:24:290
21327993630,4cyclictest41-21ksoftirqd/310:00:453
21327993629,4cyclictest41-21ksoftirqd/311:38:053
21327993629,4cyclictest41-21ksoftirqd/308:27:023
2132699367,27cyclictest0-21swapper/207:50:342
21326993632,3cyclictest33-21ksoftirqd/208:46:072
21326993630,4cyclictest33-21ksoftirqd/209:45:512
21326993630,4cyclictest33-21ksoftirqd/209:21:082
21325993630,4cyclictest25-21ksoftirqd/108:05:341
138491360,1ptp4l401ktimersoftd/308:30:223
138491360,0ptp4l401ktimersoftd/310:20:243
21327993529,4cyclictest41-21ksoftirqd/311:29:143
21327993529,4cyclictest41-21ksoftirqd/309:13:393
21327993528,4cyclictest41-21ksoftirqd/312:09:023
21327993528,4cyclictest41-21ksoftirqd/307:57:583
21327993527,5cyclictest41-21ksoftirqd/310:29:533
21326993530,3cyclictest17853-21dump-pmu-power12:30:002
21326993529,4cyclictest33-21ksoftirqd/212:19:202
21326993529,4cyclictest33-21ksoftirqd/210:37:582
21326993529,4cyclictest33-21ksoftirqd/207:28:482
21326993529,3cyclictest33-21ksoftirqd/209:15:082
21326993528,4cyclictest33-21ksoftirqd/212:35:332
21326993528,4cyclictest33-21ksoftirqd/212:06:202
21325993529,4cyclictest25-21ksoftirqd/109:36:151
21325993529,4cyclictest25-21ksoftirqd/108:41:031
21325993529,4cyclictest25-21ksoftirqd/107:31:591
21325993528,4cyclictest25-21ksoftirqd/107:55:061
21324993530,3cyclictest9-21ksoftirqd/009:55:120
21324993529,4cyclictest9-21ksoftirqd/012:30:000
21324993529,4cyclictest9-21ksoftirqd/009:35:430
21324993528,5cyclictest9-21ksoftirqd/012:33:140
138491350,1ptp4l401ktimersoftd/308:07:383
21327993429,3cyclictest41-21ksoftirqd/309:15:323
21327993428,4cyclictest41-21ksoftirqd/311:22:083
21327993428,4cyclictest41-21ksoftirqd/310:18:303
21327993428,4cyclictest41-21ksoftirqd/309:59:443
21327993428,4cyclictest41-21ksoftirqd/309:32:163
21327993428,4cyclictest41-21ksoftirqd/309:06:053
21327993428,4cyclictest41-21ksoftirqd/307:37:523
21327993428,4cyclictest41-21ksoftirqd/307:21:583
21327993427,4cyclictest41-21ksoftirqd/311:15:023
21326993429,3cyclictest33-21ksoftirqd/208:25:002
21326993428,4cyclictest33-21ksoftirqd/209:56:502
21326993428,4cyclictest33-21ksoftirqd/209:34:322
21326993428,4cyclictest33-21ksoftirqd/209:04:512
21326993428,4cyclictest33-21ksoftirqd/208:06:302
21326993428,4cyclictest33-21ksoftirqd/207:49:022
21326993427,4cyclictest33-21ksoftirqd/211:09:042
21325993428,4cyclictest25-21ksoftirqd/112:04:071
21325993428,4cyclictest25-21ksoftirqd/107:50:371
21325993428,4cyclictest25-21ksoftirqd/107:18:471
21324993429,3cyclictest9-21ksoftirqd/011:40:550
21324993429,3cyclictest9-21ksoftirqd/011:12:590
21324993428,4cyclictest9-21ksoftirqd/012:07:390
21324993428,4cyclictest9-21ksoftirqd/011:21:330
21324993428,4cyclictest9-21ksoftirqd/011:08:450
21324993428,4cyclictest9-21ksoftirqd/008:10:570
21324993427,4cyclictest9-21ksoftirqd/007:40:490
21324993426,5cyclictest9-21ksoftirqd/008:17:480
138491340,10ptp4l0-21swapper/307:52:223
21327993327,4cyclictest41-21ksoftirqd/311:51:053
21327993327,4cyclictest41-21ksoftirqd/311:31:313
21327993327,4cyclictest41-21ksoftirqd/310:11:053
21327993327,4cyclictest41-21ksoftirqd/309:54:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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