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2026-05-21 - 17:56
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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 rackdslot3.osadl.org (updated Thu May 21, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
157642207173,22sleep30-21swapper/307:08:143
156322204170,23sleep20-21swapper/207:06:322
158962203170,22sleep00-21swapper/007:09:510
156312203169,22sleep10-21swapper/107:06:321
139391570,1ptp4l401ktimersoftd/308:32:403
139391560,1ptp4l401ktimersoftd/309:50:283
89522550,5sleep08956-21kernelversion12:30:200
211072530,2sleep021109-21tr09:35:130
159592490,2sleep00-21swapper/010:30:210
213882480,1sleep00-21swapper/011:50:120
139391450,0ptp4l401ktimersoftd/312:05:163
16203994438,4cyclictest9792-21cron08:05:002
139391440,1ptp4l0-21swapper/310:07:473
139391440,0ptp4l401ktimersoftd/308:28:093
139391430,0ptp4l401ktimersoftd/311:41:023
139391420,0ptp4l401ktimersoftd/308:55:413
16203994134,4cyclictest9972-21cron10:20:002
16204994035,3cyclictest41-21ksoftirqd/312:35:013
16204994029,3cyclictest41-21ksoftirqd/311:35:003
139391400,0ptp4l401ktimersoftd/307:25:383
16204993936,2cyclictest41-21ksoftirqd/309:20:003
16204993935,2cyclictest41-21ksoftirqd/310:20:003
16204993927,9cyclictest41-21ksoftirqd/312:20:273
16204993927,9cyclictest41-21ksoftirqd/312:20:273
1620299390,37cyclictest0-21swapper/111:20:431
16204993834,2cyclictest41-21ksoftirqd/308:05:013
16204993732,3cyclictest41-21ksoftirqd/311:05:013
16204993732,3cyclictest41-21ksoftirqd/307:25:003
16204993731,3cyclictest41-21ksoftirqd/311:00:013
16203993731,4cyclictest33-21ksoftirqd/211:42:362
16203993731,4cyclictest33-21ksoftirqd/210:02:272
16204993633,2cyclictest41-21ksoftirqd/309:05:003
16204993633,2cyclictest41-21ksoftirqd/309:05:003
16204993631,3cyclictest41-21ksoftirqd/311:20:113
16204993631,3cyclictest41-21ksoftirqd/311:05:233
16204993631,3cyclictest41-21ksoftirqd/310:30:003
16204993631,2cyclictest41-21ksoftirqd/308:20:003
16204993630,3cyclictest41-21ksoftirqd/309:15:003
16203993631,3cyclictest33-21ksoftirqd/209:25:102
16202993630,4cyclictest25-21ksoftirqd/111:47:241
16202993630,4cyclictest25-21ksoftirqd/109:18:411
16201993631,3cyclictest9-21ksoftirqd/011:25:000
57898350,7rtkit-daemon0-21swapper/311:12:473
57898350,4rtkit-daemon3038-21runrttasks12:20:070
57898350,4rtkit-daemon3038-21runrttasks12:20:070
16204993532,2cyclictest41-21ksoftirqd/309:34:593
16204993531,3cyclictest41-21ksoftirqd/308:00:003
16204993530,3cyclictest41-21ksoftirqd/311:35:203
16203993529,4cyclictest33-21ksoftirqd/212:32:582
16203993529,4cyclictest33-21ksoftirqd/211:04:092
16203993529,4cyclictest33-21ksoftirqd/210:55:292
16203993529,4cyclictest33-21ksoftirqd/210:36:132
16203993529,4cyclictest33-21ksoftirqd/209:56:532
16203993529,4cyclictest33-21ksoftirqd/208:19:212
16202993530,3cyclictest25-21ksoftirqd/108:55:101
16202993529,4cyclictest25-21ksoftirqd/111:11:541
16202993529,4cyclictest25-21ksoftirqd/111:07:211
16202993529,4cyclictest25-21ksoftirqd/110:56:381
16202993529,4cyclictest25-21ksoftirqd/110:08:271
16202993529,4cyclictest25-21ksoftirqd/110:04:381
16202993529,4cyclictest25-21ksoftirqd/109:03:531
16202993529,4cyclictest25-21ksoftirqd/109:03:521
16202993529,4cyclictest25-21ksoftirqd/107:37:231
16201993529,4cyclictest9-21ksoftirqd/008:12:210
57898340,8rtkit-daemon0-21swapper/209:11:222
16204993431,2cyclictest41-21ksoftirqd/310:50:003
16204993430,2cyclictest2672-21cron07:50:003
16204993430,2cyclictest2672-21cron07:50:003
16204993429,3cyclictest41-21ksoftirqd/308:25:013
16204993429,3cyclictest41-21ksoftirqd/308:10:033
16204993428,4cyclictest41-21ksoftirqd/311:16:253
16204993428,4cyclictest41-21ksoftirqd/307:35:003
16204993428,3cyclictest41-21ksoftirqd/307:14:593
16203993429,3cyclictest33-21ksoftirqd/209:46:092
16203993428,4cyclictest33-21ksoftirqd/211:13:482
16203993428,4cyclictest33-21ksoftirqd/208:36:302
16203993428,4cyclictest33-21ksoftirqd/208:26:592
16202993429,3cyclictest25-21ksoftirqd/111:54:541
16202993429,3cyclictest25-21ksoftirqd/108:30:101
16202993428,4cyclictest25-21ksoftirqd/112:31:371
16202993428,4cyclictest25-21ksoftirqd/112:10:591
16202993428,4cyclictest25-21ksoftirqd/111:29:191
16202993428,4cyclictest25-21ksoftirqd/110:20:351
16202993428,4cyclictest25-21ksoftirqd/110:17:261
16202993428,4cyclictest25-21ksoftirqd/109:44:491
16202993428,4cyclictest25-21ksoftirqd/108:28:101
139391340,0ptp4l401ktimersoftd/308:47:133
16204993329,3cyclictest41-21ksoftirqd/309:45:013
16204993329,2cyclictest41-21ksoftirqd/312:30:003
16204993328,3cyclictest41-21ksoftirqd/308:45:003
16203993328,3cyclictest33-21ksoftirqd/211:09:382
16203993328,3cyclictest33-21ksoftirqd/208:53:592
16203993328,3cyclictest25284-21sshd09:42:102
16203993327,4cyclictest33-21ksoftirqd/211:24:302
16203993327,4cyclictest33-21ksoftirqd/210:51:162
16203993327,4cyclictest33-21ksoftirqd/209:20:102
16203993327,4cyclictest33-21ksoftirqd/209:04:382
16203993327,4cyclictest33-21ksoftirqd/209:04:382
16203993327,4cyclictest33-21ksoftirqd/208:58:042
16203993327,4cyclictest33-21ksoftirqd/208:14:312
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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