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2026-04-19 - 15:19
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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 50 highest latencies:
System rackdslot3.osadl.org (updated Sun Apr 19, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491207173,23phc2sys0-21swapper/307:07:473
103862204129,41sleep20-21swapper/207:05:102
103802204171,22sleep10-21swapper/107:05:041
123052202168,23sleep00-21swapper/007:07:250
1819021410,7sleep01280699cyclictest07:20:170
2242221330,3sleep31280999cyclictest09:45:003
139391900,1ptp4l6220-21ls10:15:263
139391850,1ptp4l391rcuc/309:50:253
1394918464,10phc2sys0-21swapper/307:10:003
263322630,2sleep10-21swapper/112:05:231
232322610,7sleep11280799cyclictest12:00:181
139391580,1ptp4l391rcuc/309:55:163
139391550,1ptp4l391rcuc/309:30:253
217472540,3sleep00-21swapper/008:35:170
119652510,2sleep20-21swapper/209:20:242
139391440,0ptp4l401ktimersoftd/308:29:293
12807994422,3cyclictest25-21ksoftirqd/110:10:011
139391430,0ptp4l401ktimersoftd/311:25:303
12807994313,4cyclictest25-21ksoftirqd/108:25:001
57898420,1rtkit-daemon0-21swapper/009:24:520
139391420,0ptp4l401ktimersoftd/307:54:063
12807994213,4cyclictest25-21ksoftirqd/109:45:221
1394914134,3phc2sys41-21ksoftirqd/310:25:003
12807994112,4cyclictest25-21ksoftirqd/108:30:161
57898400,4rtkit-daemon6631-21sh08:04:590
139391400,0ptp4l401ktimersoftd/310:35:273
139391400,0ptp4l401ktimersoftd/310:35:263
1280799405,2cyclictest121rcu_preempt08:45:251
12807994036,2cyclictest25-21ksoftirqd/111:00:001
12807994036,2cyclictest25-21ksoftirqd/109:20:001
12807994035,3cyclictest25-21ksoftirqd/110:45:001
12807994015,6cyclictest25-21ksoftirqd/107:10:231
1280799394,4cyclictest25-21ksoftirqd/109:25:261
12807993934,3cyclictest25-21ksoftirqd/111:45:221
12807993933,3cyclictest25-21ksoftirqd/111:50:131
12807993911,7cyclictest25-21ksoftirqd/107:50:191
12808993827,9cyclictest33-21ksoftirqd/212:20:002
1280799387,6cyclictest25-21ksoftirqd/110:50:231
12807993834,2cyclictest25-21ksoftirqd/109:30:281
12807993833,3cyclictest25-21ksoftirqd/112:15:001
12807993832,3cyclictest25-21ksoftirqd/111:20:211
12807993831,4cyclictest25-21ksoftirqd/107:21:591
1280799381,5cyclictest25-21ksoftirqd/107:45:271
12807993811,10cyclictest25-21ksoftirqd/112:40:011
12807993810,7cyclictest25-21ksoftirqd/110:25:141
1280999378,27cyclictest19152-21kworker/3:108:36:133
12809993731,4cyclictest41-21ksoftirqd/311:21:293
12809993731,4cyclictest41-21ksoftirqd/311:02:523
12808993730,5cyclictest33-21ksoftirqd/208:54:412
1280799379,3cyclictest25-21ksoftirqd/109:10:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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