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2026-04-24 - 20:13
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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 20 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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