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2026-03-25 - 08:41
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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 Wed Mar 25, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
247342204171,22sleep10-21swapper/119:07:381
247312204169,23sleep30-21swapper/319:07:363
246482203170,22sleep20-21swapper/219:06:302
248222199165,22sleep00-21swapper/019:08:450
2739821620,3sleep22521299cyclictest23:35:002
2573221540,7sleep32521399cyclictest21:20:183
2491828363,11sleep30-21swapper/319:10:013
25212996246,13cyclictest22304-21sendmail22:20:002
138491570,1ptp4l401ktimersoftd/320:51:273
173542560,4sleep017357-21sendmail20:00:000
25213995318,3cyclictest41-21ksoftirqd/323:30:123
50798480,11rtkit-daemon506-21rtkit-daemon19:36:432
2521299480,2cyclictest0-21swapper/200:10:232
135191480,6getstats2521399cyclictest23:18:113
25213994728,17cyclictest41-21ksoftirqd/300:20:013
25212994516,27cyclictest0-21swapper/222:45:232
138491440,0ptp4l401ktimersoftd/320:20:223
138491440,0ptp4l401ktimersoftd/319:35:123
2521399421,38cyclictest25419-21grep20:15:133
25212994213,27cyclictest0-21swapper/223:35:232
138491420,0ptp4l401ktimersoftd/323:00:243
138491420,0ptp4l401ktimersoftd/322:25:103
138491420,0ptp4l401ktimersoftd/300:00:183
2521299410,38cyclictest0-21swapper/222:35:242
138491410,0ptp4l401ktimersoftd/322:35:003
25213994036,3cyclictest41-21ksoftirqd/319:30:003
25213994035,3cyclictest41-21ksoftirqd/320:00:003
25213994012,7cyclictest41-21ksoftirqd/320:30:233
25211994035,3cyclictest25023-21wc22:25:141
25210994033,4cyclictest27087-21cron21:24:590
25213993928,9cyclictest41-21ksoftirqd/322:05:273
2521399389,9cyclictest41-21ksoftirqd/321:35:263
25212993832,3cyclictest33-21ksoftirqd/222:24:592
25212993831,4cyclictest33-21ksoftirqd/223:15:352
25212993826,10cyclictest33-21ksoftirqd/222:51:392
25210993832,4cyclictest9-21ksoftirqd/022:58:590
138491380,0ptp4l401ktimersoftd/321:10:153
25213993733,3cyclictest41-21ksoftirqd/323:39:593
25213993733,2cyclictest41-21ksoftirqd/323:49:593
25213993733,2cyclictest41-21ksoftirqd/322:20:003
25213993733,2cyclictest41-21ksoftirqd/320:35:143
25213993732,3cyclictest41-21ksoftirqd/319:55:013
25213993725,10cyclictest41-21ksoftirqd/319:42:503
25212993731,4cyclictest33-21ksoftirqd/223:42:432
25212993731,4cyclictest33-21ksoftirqd/222:28:012
25211993730,4cyclictest25-21ksoftirqd/120:46:221
25211993730,4cyclictest2157-21grep20:35:001
25210993732,3cyclictest9-21ksoftirqd/021:30:110
25210993731,4cyclictest9-21ksoftirqd/022:43:190
25210993731,4cyclictest9-21ksoftirqd/020:49:500
25210993731,4cyclictest9-21ksoftirqd/019:10:580
25210993730,4cyclictest9-21ksoftirqd/022:10:060
25213993631,3cyclictest41-21ksoftirqd/321:55:133
25213993631,3cyclictest41-21ksoftirqd/319:45:133
25213993631,3cyclictest41-21ksoftirqd/319:20:183
25213993631,3cyclictest41-21ksoftirqd/300:24:593
25213993625,9cyclictest41-21ksoftirqd/322:10:273
25212993630,4cyclictest33-21ksoftirqd/221:41:152
25211993630,4cyclictest25-21ksoftirqd/120:06:591
25211993629,5cyclictest25-21ksoftirqd/120:56:411
25210993630,4cyclictest9-21ksoftirqd/020:08:020
138491360,0ptp4l401ktimersoftd/320:00:133
2521399358,7cyclictest41-21ksoftirqd/300:35:243
2521399357,3cyclictest41-21ksoftirqd/321:05:233
2521399355,3cyclictest41-21ksoftirqd/322:45:003
2521399354,10cyclictest41-21ksoftirqd/323:00:013
25213993531,2cyclictest41-21ksoftirqd/321:55:003
25213993531,2cyclictest41-21ksoftirqd/300:30:173
25213993530,3cyclictest41-21ksoftirqd/323:05:183
25213993530,3cyclictest41-21ksoftirqd/322:20:193
25213993530,3cyclictest41-21ksoftirqd/321:30:193
25213993530,3cyclictest41-21ksoftirqd/321:15:123
25213993530,2cyclictest41-21ksoftirqd/300:05:143
25213993529,4cyclictest41-21ksoftirqd/323:57:313
25213993529,4cyclictest41-21ksoftirqd/320:05:163
25213993524,9cyclictest41-21ksoftirqd/322:40:273
2521299357,26cyclictest0-21swapper/200:35:342
25212993530,3cyclictest33-21ksoftirqd/222:04:342
25212993530,3cyclictest33-21ksoftirqd/221:14:592
25212993529,4cyclictest33-21ksoftirqd/222:56:092
25212993529,4cyclictest33-21ksoftirqd/219:22:072
25212993529,4cyclictest33-21ksoftirqd/219:13:322
25212993528,4cyclictest33-21ksoftirqd/221:40:002
2521199356,28cyclictest0-21swapper/122:35:531
25211993530,3cyclictest25-21ksoftirqd/121:00:111
25211993530,3cyclictest25-21ksoftirqd/119:15:001
25211993529,4cyclictest25-21ksoftirqd/123:34:101
25211993529,4cyclictest25-21ksoftirqd/100:09:371
25211993528,4cyclictest25-21ksoftirqd/121:30:111
25210993529,4cyclictest9-21ksoftirqd/023:37:350
25210993529,4cyclictest9-21ksoftirqd/021:11:330
25210993529,4cyclictest9-21ksoftirqd/020:19:290
25210993528,4cyclictest9-21ksoftirqd/022:20:520
2521399347,7cyclictest41-21ksoftirqd/320:10:183
25213993430,3cyclictest41-21ksoftirqd/323:28:253
25213993430,3cyclictest41-21ksoftirqd/319:15:183
25213993429,3cyclictest41-21ksoftirqd/323:25:003
25213993429,3cyclictest41-21ksoftirqd/321:00:163
25213993429,3cyclictest41-21ksoftirqd/300:10:263
25213993428,4cyclictest41-21ksoftirqd/323:40:383
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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