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2025-11-15 - 00:30
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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 rackdslot3.osadl.org (updated Fri Nov 14, 2025 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
150332233205,18sleep00-21swapper/007:06:590
151862204172,21sleep30-21swapper/307:08:583
151282204170,23sleep20-21swapper/207:08:132
152312203169,23sleep10-21swapper/107:09:251
135512510,2sleep10-21swapper/111:35:121
1557499500,20cyclictest25952-21runrttasks07:30:183
1557499500,20cyclictest25952-21runrttasks07:30:183
193092450,3sleep3391rcuc/308:25:003
136991440,0ptp4l401ktimersoftd/310:20:073
136991420,0ptp4l401ktimersoftd/310:54:523
136991410,0ptp4l401ktimersoftd/307:25:243
136991410,0ptp4l401ktimersoftd/307:20:313
136991400,0ptp4l401ktimersoftd/312:00:123
136991400,0ptp4l401ktimersoftd/309:43:433
136991400,0ptp4l401ktimersoftd/309:20:013
15573993922,14cyclictest33-21ksoftirqd/210:42:562
15573993917,19cyclictest16768-21sh08:20:012
15574993833,3cyclictest41-21ksoftirqd/309:05:003
1557399384,31cyclictest2495-21latency_hist10:05:002
15573993824,12cyclictest33-21ksoftirqd/207:40:012
136991380,0ptp4l401ktimersoftd/310:55:183
59298370,7rtkit-daemon0-21swapper/111:34:361
1557399370,35cyclictest0-21swapper/210:25:362
15572993731,4cyclictest25-21ksoftirqd/107:30:421
15572993731,4cyclictest25-21ksoftirqd/107:30:421
1557499361,21cyclictest19539-21awk07:15:253
15573993630,4cyclictest33-21ksoftirqd/212:32:072
15573993630,4cyclictest33-21ksoftirqd/212:13:052
15573993630,4cyclictest33-21ksoftirqd/211:04:332
15573993630,4cyclictest33-21ksoftirqd/210:45:402
15572993630,4cyclictest25-21ksoftirqd/108:51:171
15572993627,6cyclictest25-21ksoftirqd/107:15:001
15571993630,4cyclictest9-21ksoftirqd/010:42:570
59298350,7rtkit-daemon0-21swapper/109:36:051
15574993530,3cyclictest41-21ksoftirqd/309:35:003
1557499350,33cyclictest11338-21kworker/3:010:31:473
1557499350,33cyclictest0-21swapper/311:10:163
15573993529,4cyclictest33-21ksoftirqd/211:27:042
15573993529,4cyclictest33-21ksoftirqd/209:37:002
15573993529,4cyclictest33-21ksoftirqd/209:09:202
15573993529,4cyclictest33-21ksoftirqd/209:09:202
1557399351,4cyclictest25165-21cron12:00:012
1557399351,17cyclictest14375-21cron08:15:002
15572993530,3cyclictest25-21ksoftirqd/108:44:221
15572993529,4cyclictest25-21ksoftirqd/111:43:161
15572993529,4cyclictest25-21ksoftirqd/111:06:211
15572993529,4cyclictest25-21ksoftirqd/109:59:531
15572993529,4cyclictest25-21ksoftirqd/108:56:111
15572993529,4cyclictest25-21ksoftirqd/107:52:121
15572993528,5cyclictest25-21ksoftirqd/112:20:341
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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