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2026-05-13 - 16:01
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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 May 13, 2026 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
319692203169,22sleep00-21swapper/007:09:540
138591203168,23phc2sys0-21swapper/307:08:243
316372201167,22sleep20-21swapper/207:05:432
316432200167,22sleep10-21swapper/107:05:451
2319621180,2sleep30-21swapper/309:00:203
3197728264,10sleep20-21swapper/207:10:012
1385918162,10phc2sys0-21swapper/307:10:003
57382650,3sleep20-21swapper/211:40:182
59292610,2sleep30-21swapper/307:20:193
276702610,4sleep3391rcuc/312:25:123
138491610,1ptp4l401ktimersoftd/308:30:103
32271995725,7cyclictest41-21ksoftirqd/310:30:013
233002560,2sleep10-21swapper/111:10:201
3227099516,11cyclictest33-21ksoftirqd/207:30:162
138491510,1ptp4l401ktimersoftd/311:18:343
50798500,12rtkit-daemon506-21rtkit-daemon07:42:212
32271994742,3cyclictest41-21ksoftirqd/311:00:003
32271994615,3cyclictest41-21ksoftirqd/308:40:273
3227099454,2cyclictest121rcu_preempt12:00:222
32269994540,3cyclictest31756-21sh08:15:011
3226899453,6cyclictest121rcu_preempt12:19:550
3227099447,4cyclictest33-21ksoftirqd/208:54:092
3227099444,10cyclictest33-21ksoftirqd/209:10:182
32270994410,9cyclictest33-21ksoftirqd/207:55:002
138491440,0ptp4l401ktimersoftd/311:44:203
32271994311,4cyclictest41-21ksoftirqd/309:15:143
3227099439,9cyclictest33-21ksoftirqd/208:44:592
3227099436,3cyclictest33-21ksoftirqd/211:00:232
32270994338,3cyclictest33-21ksoftirqd/208:15:132
32270994331,9cyclictest33-21ksoftirqd/210:15:262
32268994329,4cyclictest9-21ksoftirqd/010:50:000
32268994321,4cyclictest9-21ksoftirqd/009:50:170
138491430,0ptp4l401ktimersoftd/311:25:183
138491430,0ptp4l401ktimersoftd/310:40:263
138491430,0ptp4l401ktimersoftd/308:59:453
32271994228,4cyclictest41-21ksoftirqd/312:00:223
3227099425,4cyclictest33-21ksoftirqd/211:10:222
3227099424,7cyclictest33-21ksoftirqd/207:25:122
3227099421,11cyclictest33-21ksoftirqd/209:10:022
32268994225,4cyclictest9-21ksoftirqd/011:05:100
138491420,0ptp4l401ktimersoftd/309:40:003
138491420,0ptp4l401ktimersoftd/309:40:003
3227099416,3cyclictest33-21ksoftirqd/211:05:262
3227099415,4cyclictest33-21ksoftirqd/211:55:232
32270994136,3cyclictest33-21ksoftirqd/208:05:232
32270994136,2cyclictest33-21ksoftirqd/209:05:002
32270994135,3cyclictest33-21ksoftirqd/210:25:002
32270994135,3cyclictest33-21ksoftirqd/209:25:002
32270994135,3cyclictest29698-21cron11:25:002
3227099410,3cyclictest121rcu_preempt10:30:012
138491410,0ptp4l401ktimersoftd/309:20:293
3227099406,3cyclictest33-21ksoftirqd/210:55:212
32270994034,3cyclictest33-21ksoftirqd/209:45:002
32270994032,4cyclictest33-21ksoftirqd/212:36:502
32270994029,9cyclictest33-21ksoftirqd/211:30:192
32270994027,10cyclictest33-21ksoftirqd/208:00:252
3227099401,3cyclictest121rcu_preempt10:40:012
3226899404,4cyclictest121rcu_preempt09:05:090
32268994035,3cyclictest9-21ksoftirqd/012:40:010
32271993935,3cyclictest41-21ksoftirqd/310:25:003
32271993925,4cyclictest41-21ksoftirqd/310:40:013
3227099397,6cyclictest33-21ksoftirqd/209:15:232
3227099397,3cyclictest33-21ksoftirqd/212:10:252
3227099396,4cyclictest33-21ksoftirqd/208:10:232
3227099395,4cyclictest33-21ksoftirqd/211:15:202
32270993934,3cyclictest33-21ksoftirqd/210:55:002
32270993934,3cyclictest33-21ksoftirqd/210:10:012
32270993934,3cyclictest33-21ksoftirqd/208:35:112
32270993933,3cyclictest33-21ksoftirqd/212:15:112
32270993933,3cyclictest33-21ksoftirqd/207:20:152
32270993932,4cyclictest33-21ksoftirqd/212:09:102
32271993833,3cyclictest41-21ksoftirqd/312:20:003
32271993822,3cyclictest41-21ksoftirqd/311:35:283
3227099386,3cyclictest33-21ksoftirqd/211:25:242
3227099385,2cyclictest121rcu_preempt09:35:292
3227099385,2cyclictest121rcu_preempt09:35:292
3227099383,3cyclictest33-21ksoftirqd/209:55:212
32270993832,3cyclictest33-21ksoftirqd/212:35:012
32270993832,3cyclictest33-21ksoftirqd/209:45:182
32270993832,3cyclictest33-21ksoftirqd/208:55:182
32270993831,4cyclictest33-21ksoftirqd/211:47:562
32269993833,3cyclictest24300-21cron09:05:001
32269993832,4cyclictest25-21ksoftirqd/110:35:091
32268993821,5cyclictest9-21ksoftirqd/011:19:590
32271993733,2cyclictest41-21ksoftirqd/308:49:403
32271993732,3cyclictest41-21ksoftirqd/311:49:593
32271993732,2cyclictest41-21ksoftirqd/308:20:003
3227199371,6cyclictest121rcu_preempt07:50:123
3227099375,8cyclictest121rcu_preempt11:50:222
32270993732,3cyclictest33-21ksoftirqd/210:25:122
32270993731,3cyclictest33-21ksoftirqd/211:40:012
32270993731,3cyclictest33-21ksoftirqd/208:30:122
32270993731,3cyclictest33-21ksoftirqd/207:15:282
32270993730,4cyclictest33-21ksoftirqd/208:48:562
3227099371,9cyclictest33-21ksoftirqd/212:30:002
3227099371,5cyclictest33-21ksoftirqd/208:20:232
3227099370,10cyclictest33-21ksoftirqd/210:50:002
32268993733,2cyclictest9-21ksoftirqd/012:05:000
32268993732,3cyclictest9-21ksoftirqd/012:25:170
32268993732,3cyclictest9-21ksoftirqd/008:20:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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