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2026-06-13 - 00:42
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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 50 highest latencies:
System rackdslot4.osadl.org (updated Fri Jun 12, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591236168,23phc2sys0-21swapper/307:09:493
125072199167,21sleep20-21swapper/207:09:172
124162197164,22sleep10-21swapper/107:08:101
124472194161,21sleep00-21swapper/007:08:340
1256625839,10sleep20-21swapper/207:10:012
290482570,3sleep30-21swapper/307:40:253
138491570,1ptp4l401ktimersoftd/310:57:473
138491560,1ptp4l401ktimersoftd/310:17:263
165882520,2sleep30-21swapper/309:25:243
20742510,2sleep30-21swapper/307:50:283
138491480,24ptp4l35792irq/125-enp1s0-11:30:233
12859994716,29cyclictest0-21swapper/209:30:332
1285999450,44cyclictest0-21swapper/212:36:242
1285899430,42cyclictest0-21swapper/111:33:421
138491420,0ptp4l401ktimersoftd/308:45:303
12859994214,26cyclictest0-21swapper/209:55:232
12857994236,3cyclictest14884-21grep10:30:010
50798410,4rtkit-daemon5612-21if_enp1s011:15:152
12859994113,27cyclictest0-21swapper/207:53:442
12857994136,3cyclictest15093-21cron07:15:010
138491400,1ptp4l401ktimersoftd/308:25:373
138491400,0ptp4l401ktimersoftd/307:47:283
1285999408,30cyclictest0-21swapper/209:20:332
12859994014,24cyclictest0-21swapper/211:56:042
12859994013,26cyclictest0-21swapper/209:15:232
12859994012,27cyclictest0-21swapper/208:40:232
138491390,0ptp4l401ktimersoftd/309:35:163
1285899390,37cyclictest0-21swapper/111:57:021
12859993829,7cyclictest33-21ksoftirqd/210:12:192
12858993833,3cyclictest27171-21cron10:55:001
12859993732,3cyclictest33-21ksoftirqd/211:10:102
12859993731,4cyclictest33-21ksoftirqd/210:02:302
12859993731,4cyclictest33-21ksoftirqd/210:02:302
12859993730,5cyclictest33-21ksoftirqd/207:34:222
1285999370,2cyclictest0-21swapper/208:10:242
12858993731,4cyclictest25-21ksoftirqd/111:19:381
12858993731,4cyclictest25-21ksoftirqd/111:09:281
12858993731,4cyclictest25-21ksoftirqd/107:32:531
12858993731,3cyclictest25-21ksoftirqd/110:55:121
12857993732,3cyclictest9-21ksoftirqd/010:50:110
12857993730,4cyclictest9-21ksoftirqd/008:38:350
50798360,2rtkit-daemon0-21swapper/311:50:273
50798360,2rtkit-daemon0-21swapper/311:25:263
138491360,13ptp4l401ktimersoftd/312:25:263
12860993630,4cyclictest41-21ksoftirqd/311:49:223
12860993629,5cyclictest41-21ksoftirqd/312:11:003
12860993629,4cyclictest41-21ksoftirqd/309:21:593
1285999367,27cyclictest0-21swapper/211:50:332
1285999367,27cyclictest0-21swapper/209:05:232
1285999367,27cyclictest0-21swapper/209:05:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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