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2026-07-11 - 08:09
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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 Jul 11, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
225202206171,23sleep30-21swapper/319:05:303
227662205171,22sleep20-21swapper/219:08:422
228152203169,23sleep10-21swapper/119:09:211
226402203169,22sleep00-21swapper/019:07:030
1385918162,11phc2sys0-21swapper/319:10:003
294962620,5sleep12315999cyclictest19:20:241
97172610,2sleep30-21swapper/321:55:223
86152530,2sleep18619-21irqrtprio00:05:181
60752500,2sleep00-21swapper/000:00:170
257572460,2sleep30-21swapper/319:15:123
23161994532,11cyclictest41-21ksoftirqd/322:44:593
138491430,0ptp4l401ktimersoftd/323:04:163
138491420,0ptp4l401ktimersoftd/321:08:503
134991410,2getstats0-21swapper/320:25:243
23158994035,3cyclictest9-21ksoftirqd/022:40:000
23158994034,3cyclictest9-21ksoftirqd/019:35:000
23158994034,3cyclictest9-21ksoftirqd/019:35:000
23161993934,3cyclictest7983-21cron21:54:593
23158993933,3cyclictest9-21ksoftirqd/020:45:000
23160993832,4cyclictest33-21ksoftirqd/221:04:312
23160993832,4cyclictest33-21ksoftirqd/219:56:072
23160993832,4cyclictest33-21ksoftirqd/200:28:142
23158993833,3cyclictest9-21ksoftirqd/023:20:000
23158993833,3cyclictest9-21ksoftirqd/023:00:000
23158993833,3cyclictest9-21ksoftirqd/019:50:240
23161993732,3cyclictest41-21ksoftirqd/322:05:003
23161993731,4cyclictest41-21ksoftirqd/321:30:403
23160993732,3cyclictest33-21ksoftirqd/221:50:592
23160993731,4cyclictest33-21ksoftirqd/220:43:332
23160993731,3cyclictest33-21ksoftirqd/221:35:112
23158993732,3cyclictest9-21ksoftirqd/023:40:000
138491370,0ptp4l401ktimersoftd/320:15:103
23161993630,4cyclictest41-21ksoftirqd/322:53:353
23161993630,4cyclictest41-21ksoftirqd/322:30:093
23161993630,4cyclictest41-21ksoftirqd/321:20:373
23160993632,3cyclictest33-21ksoftirqd/221:45:002
23160993631,3cyclictest33-21ksoftirqd/220:03:132
23160993630,4cyclictest33-21ksoftirqd/221:15:462
23160993630,4cyclictest33-21ksoftirqd/220:58:452
23160993630,4cyclictest33-21ksoftirqd/220:29:332
23160993630,4cyclictest33-21ksoftirqd/220:12:442
23160993630,4cyclictest33-21ksoftirqd/200:30:382
23160993630,3cyclictest33-21ksoftirqd/222:10:102
23159993630,4cyclictest25-21ksoftirqd/122:34:491
23159993630,4cyclictest25-21ksoftirqd/119:51:011
23159993630,4cyclictest25-21ksoftirqd/119:18:271
23159993630,4cyclictest25-21ksoftirqd/100:26:491
23158993632,2cyclictest9-21ksoftirqd/022:35:000
23158993632,2cyclictest9-21ksoftirqd/000:15:180
23158993631,3cyclictest9-21ksoftirqd/021:30:210
23158993631,3cyclictest9-21ksoftirqd/021:20:000
23158993630,4cyclictest9-21ksoftirqd/019:38:520
138491360,0ptp4l401ktimersoftd/319:32:023
138491360,0ptp4l401ktimersoftd/319:32:013
23161993531,2cyclictest41-21ksoftirqd/323:25:013
23161993529,4cyclictest41-21ksoftirqd/320:12:333
23161993528,5cyclictest41-21ksoftirqd/323:51:363
23160993531,2cyclictest33-21ksoftirqd/223:05:002
23160993530,3cyclictest33-21ksoftirqd/221:50:002
23160993530,3cyclictest33-21ksoftirqd/219:43:242
23160993529,4cyclictest33-21ksoftirqd/223:23:322
23160993529,4cyclictest33-21ksoftirqd/220:17:332
23159993529,4cyclictest25-21ksoftirqd/123:55:031
23159993529,4cyclictest25-21ksoftirqd/123:55:031
23159993529,4cyclictest25-21ksoftirqd/121:42:131
23159993529,3cyclictest25-21ksoftirqd/123:25:591
23159993528,5cyclictest25-21ksoftirqd/119:26:541
23159993528,4cyclictest25-21ksoftirqd/120:09:061
23158993530,3cyclictest9-21ksoftirqd/022:45:000
23158993530,3cyclictest9-21ksoftirqd/022:00:200
23158993530,3cyclictest9-21ksoftirqd/021:50:000
23158993530,3cyclictest17771-21cron20:05:000
23158993529,4cyclictest9-21ksoftirqd/023:55:110
23158993529,4cyclictest9-21ksoftirqd/023:55:110
138491350,0ptp4l401ktimersoftd/323:05:133
138491350,0ptp4l401ktimersoftd/323:05:133
23161993429,3cyclictest41-21ksoftirqd/322:05:093
23161993429,3cyclictest41-21ksoftirqd/319:55:243
23161993428,4cyclictest41-21ksoftirqd/323:30:543
23161993428,4cyclictest41-21ksoftirqd/321:45:283
23161993428,4cyclictest41-21ksoftirqd/320:48:153
23161993428,4cyclictest41-21ksoftirqd/319:27:283
23161993428,4cyclictest41-21ksoftirqd/300:19:173
23160993430,2cyclictest33-21ksoftirqd/219:40:002
23160993428,4cyclictest33-21ksoftirqd/223:45:102
23160993428,4cyclictest33-21ksoftirqd/223:37:482
23160993428,4cyclictest33-21ksoftirqd/223:30:502
23160993428,4cyclictest33-21ksoftirqd/222:50:542
23160993428,4cyclictest33-21ksoftirqd/222:36:142
23160993428,4cyclictest33-21ksoftirqd/221:23:212
23160993428,4cyclictest33-21ksoftirqd/200:35:452
23160993427,4cyclictest33-21ksoftirqd/221:58:592
23160993427,4cyclictest33-21ksoftirqd/200:04:002
23159993429,3cyclictest25-21ksoftirqd/123:20:011
23159993428,4cyclictest25-21ksoftirqd/122:15:551
23159993428,4cyclictest25-21ksoftirqd/121:16:501
23159993428,4cyclictest25-21ksoftirqd/120:38:551
23159993428,4cyclictest25-21ksoftirqd/120:20:091
23159993428,4cyclictest25-21ksoftirqd/120:04:091
23159993428,4cyclictest25-21ksoftirqd/119:48:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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