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2026-04-24 - 17:19
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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 Fri Apr 24, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591230163,23phc2sys0-21swapper/307:05:583
61582217155,50sleep10-21swapper/107:06:241
61712201168,22sleep20-21swapper/207:06:332
61642198164,22sleep00-21swapper/007:06:270
2739921480,7sleep0673899cyclictest10:00:170
100742860,24sleep125-21ksoftirqd/111:35:181
644728561,15sleep00-21swapper/007:10:010
6740996928,10cyclictest33-21ksoftirqd/210:40:122
6740996928,10cyclictest33-21ksoftirqd/210:40:122
138491670,1ptp4l401ktimersoftd/311:04:163
6740996125,4cyclictest33-21ksoftirqd/211:00:002
6740996117,10cyclictest33-21ksoftirqd/209:05:192
6740996018,8cyclictest33-21ksoftirqd/208:39:282
6740995925,11cyclictest33-21ksoftirqd/209:59:592
6740995826,5cyclictest33-21ksoftirqd/210:50:142
6740995724,10cyclictest33-21ksoftirqd/207:14:592
6740995723,4cyclictest33-21ksoftirqd/207:35:252
6740995718,4cyclictest33-21ksoftirqd/207:25:232
138491570,1ptp4l401ktimersoftd/309:44:283
13362570,3sleep01332-21sendmail-msp11:20:000
6740995620,9cyclictest33-21ksoftirqd/211:55:152
6740995619,10cyclictest33-21ksoftirqd/212:08:002
6740995619,10cyclictest33-21ksoftirqd/207:55:002
138491560,1ptp4l401ktimersoftd/311:37:133
6740995523,9cyclictest33-21ksoftirqd/211:45:202
6740995517,9cyclictest33-21ksoftirqd/212:35:132
6740995515,9cyclictest33-21ksoftirqd/208:20:242
6740995421,9cyclictest33-21ksoftirqd/208:00:242
6740995419,10cyclictest33-21ksoftirqd/211:05:152
6740995317,9cyclictest33-21ksoftirqd/209:35:242
6740995312,8cyclictest33-21ksoftirqd/208:25:162
6740995312,8cyclictest33-21ksoftirqd/208:25:152
138491530,1ptp4l391rcuc/307:50:413
6740995219,8cyclictest33-21ksoftirqd/209:30:212
6740995217,8cyclictest33-21ksoftirqd/212:15:212
6740995216,9cyclictest33-21ksoftirqd/208:15:162
6740995212,6cyclictest33-21ksoftirqd/208:05:262
138491520,1ptp4l401ktimersoftd/310:24:513
6740995126,5cyclictest33-21ksoftirqd/208:54:592
6740995125,4cyclictest33-21ksoftirqd/210:25:172
6740995123,8cyclictest33-21ksoftirqd/211:20:172
6740995121,9cyclictest33-21ksoftirqd/211:10:242
6740995119,9cyclictest33-21ksoftirqd/211:50:172
6740995022,10cyclictest33-21ksoftirqd/211:35:172
6740995020,4cyclictest33-21ksoftirqd/207:30:162
6740994922,8cyclictest33-21ksoftirqd/209:45:002
6740994922,7cyclictest33-21ksoftirqd/209:25:002
6740994920,4cyclictest33-21ksoftirqd/210:30:142
6740994919,3cyclictest33-21ksoftirqd/210:00:182
6740994918,9cyclictest33-21ksoftirqd/211:25:232
6740994917,5cyclictest33-21ksoftirqd/212:30:122
6740994916,6cyclictest33-21ksoftirqd/210:20:132
6740994916,5cyclictest33-21ksoftirqd/209:10:222
6740994911,6cyclictest33-21ksoftirqd/208:55:192
6740994820,10cyclictest33-21ksoftirqd/210:15:232
6740994818,4cyclictest33-21ksoftirqd/207:45:132
6740994817,4cyclictest33-21ksoftirqd/212:10:132
6740994817,4cyclictest33-21ksoftirqd/208:15:002
6740994817,4cyclictest33-21ksoftirqd/208:00:012
6740994817,4cyclictest33-21ksoftirqd/208:00:012
6740994815,3cyclictest33-21ksoftirqd/209:15:172
6740994814,9cyclictest33-21ksoftirqd/207:40:132
6741994716,4cyclictest41-21ksoftirqd/311:20:013
674099471,7cyclictest33-21ksoftirqd/211:40:132
6740994717,4cyclictest33-21ksoftirqd/207:20:262
6740994716,3cyclictest33-21ksoftirqd/212:20:242
6740994711,5cyclictest33-21ksoftirqd/209:00:202
6740994710,5cyclictest33-21ksoftirqd/210:05:232
6740994633,4cyclictest33-21ksoftirqd/211:05:012
6740994618,7cyclictest33-21ksoftirqd/210:35:202
6740994614,8cyclictest33-21ksoftirqd/212:25:182
674099461,3cyclictest33-21ksoftirqd/208:30:232
6740994613,5cyclictest33-21ksoftirqd/210:10:112
673999462,22cyclictest0-21swapper/108:53:551
6740994514,4cyclictest33-21ksoftirqd/208:40:262
6740994512,5cyclictest33-21ksoftirqd/209:50:122
6740994418,3cyclictest33-21ksoftirqd/211:19:412
6740994413,6cyclictest33-21ksoftirqd/209:25:242
674099440,2cyclictest33-21ksoftirqd/208:45:262
673999445,21cyclictest0-21swapper/107:45:171
6740994329,3cyclictest33-21ksoftirqd/207:15:132
6740994314,5cyclictest33-21ksoftirqd/209:45:142
6740994227,3cyclictest33-21ksoftirqd/212:00:132
6740994219,10cyclictest33-21ksoftirqd/210:45:122
138491420,0ptp4l401ktimersoftd/307:18:413
138491410,0ptp4l401ktimersoftd/307:29:543
6741994035,3cyclictest41-21ksoftirqd/308:30:003
6741994035,3cyclictest41-21ksoftirqd/308:30:003
674099404,3cyclictest121rcu_preempt11:30:002
135191400,4getstats674199cyclictest11:20:333
6738993931,4cyclictest9-21ksoftirqd/007:35:110
674199385,3cyclictest41-21ksoftirqd/309:15:243
6741993833,3cyclictest41-21ksoftirqd/311:30:003
6741993833,3cyclictest41-21ksoftirqd/310:00:003
6741993832,3cyclictest41-21ksoftirqd/309:45:133
138491380,0ptp4l401ktimersoftd/308:20:003
6741993733,2cyclictest4929-21irqrtprio12:30:173
6741993732,3cyclictest41-21ksoftirqd/310:30:163
6741993731,4cyclictest41-21ksoftirqd/309:22:103
6741993731,4cyclictest41-21ksoftirqd/307:59:383
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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