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2026-05-16 - 14:58
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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 Sat May 16, 2026 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591223158,53phc2sys0-21swapper/319:09:263
296842205173,21sleep20-21swapper/219:05:032
316912201168,23sleep10-21swapper/119:07:111
317202199166,21sleep00-21swapper/019:07:340
407121670,4sleep03220199cyclictest20:20:260
2864021610,4sleep13220299cyclictest21:10:221
27932700,3sleep32795-21df_abs19:15:143
138491700,1ptp4l5095-21apt-get21:30:103
69702690,5sleep33220499cyclictest20:30:003
138491660,4ptp4l3220499cyclictest21:25:153
138491560,1ptp4l401ktimersoftd/323:42:533
212902530,3sleep2321ktimersoftd/222:00:222
32204995214,7cyclictest41-21ksoftirqd/322:00:013
32202994741,3cyclictest1303-21runrttasks00:04:351
3191024734,6sleep20-21swapper/219:10:012
138491470,1ptp4l401ktimersoftd/321:35:063
32204994610,15cyclictest41-21ksoftirqd/300:25:243
32204994516,4cyclictest41-21ksoftirqd/300:20:203
3220499450,3cyclictest121rcu_preempt20:20:003
3220499450,3cyclictest121rcu_preempt20:20:003
138491450,0ptp4l401ktimersoftd/300:11:063
32204994432,9cyclictest41-21ksoftirqd/323:25:203
32204994431,11cyclictest41-21ksoftirqd/322:25:213
3220499440,3cyclictest121rcu_preempt22:40:193
138491440,0ptp4l401ktimersoftd/323:31:593
32204994315,7cyclictest41-21ksoftirqd/319:25:193
32202994337,3cyclictest25-21ksoftirqd/121:00:001
32202994337,3cyclictest12239-21cron21:45:001
32204994212,7cyclictest41-21ksoftirqd/319:10:133
32201994237,3cyclictest32061-21dump-pmu-power21:20:000
138491420,0ptp4l401ktimersoftd/322:04:543
138491420,0ptp4l401ktimersoftd/320:20:313
138491420,0ptp4l401ktimersoftd/320:10:193
138491420,0ptp4l401ktimersoftd/300:00:313
3220499419,4cyclictest41-21ksoftirqd/320:35:223
32204994113,4cyclictest41-21ksoftirqd/320:00:133
32204994110,3cyclictest41-21ksoftirqd/323:45:133
32202994136,3cyclictest25-21ksoftirqd/122:34:591
138491410,0ptp4l401ktimersoftd/300:31:073
3220499409,4cyclictest41-21ksoftirqd/322:10:253
3220499408,7cyclictest41-21ksoftirqd/321:20:143
32204994036,3cyclictest41-21ksoftirqd/319:35:003
32204994035,3cyclictest41-21ksoftirqd/322:55:003
32204994029,9cyclictest41-21ksoftirqd/320:50:193
32203994033,4cyclictest27019-21cron23:20:002
32202994035,3cyclictest25-21ksoftirqd/122:24:591
3220499397,3cyclictest41-21ksoftirqd/321:00:133
32204993934,3cyclictest41-21ksoftirqd/319:40:003
32204993920,7cyclictest41-21ksoftirqd/321:40:263
32204993910,4cyclictest41-21ksoftirqd/320:55:183
32203993935,3cyclictest33-21ksoftirqd/220:50:012
32203993932,4cyclictest33-21ksoftirqd/221:52:592
32202993934,3cyclictest25-21ksoftirqd/121:19:591
32202993934,3cyclictest25-21ksoftirqd/121:05:001
3220499387,3cyclictest41-21ksoftirqd/322:35:193
3220499386,3cyclictest41-21ksoftirqd/323:10:153
3220499385,2cyclictest41-21ksoftirqd/323:50:243
32204993826,9cyclictest41-21ksoftirqd/319:50:273
32204993826,3cyclictest41-21ksoftirqd/321:45:233
32204993826,10cyclictest41-21ksoftirqd/300:15:163
32204993811,6cyclictest41-21ksoftirqd/322:15:143
32204993810,7cyclictest41-21ksoftirqd/320:45:183
32203993833,3cyclictest33-21ksoftirqd/222:35:592
32202993834,2cyclictest19611-21dump-pmu-power22:00:011
3220299381,34cyclictest6954-21cron20:30:001
3220499379,3cyclictest41-21ksoftirqd/321:06:093
3220499376,2cyclictest41-21ksoftirqd/323:35:123
32204993732,3cyclictest41-21ksoftirqd/323:20:013
32204993732,3cyclictest41-21ksoftirqd/320:05:243
32204993720,3cyclictest41-21ksoftirqd/319:55:263
3220499371,8cyclictest41-21ksoftirqd/322:05:143
32203993732,4cyclictest33-21ksoftirqd/200:29:552
32203993731,4cyclictest33-21ksoftirqd/221:18:372
32203993731,4cyclictest33-21ksoftirqd/220:30:392
32203993731,4cyclictest33-21ksoftirqd/220:29:232
32202993733,2cyclictest25-21ksoftirqd/123:50:001
32202993732,3cyclictest25-21ksoftirqd/123:20:011
32202993732,3cyclictest25-21ksoftirqd/121:55:001
32202993732,2cyclictest25-21ksoftirqd/119:30:131
32202993731,4cyclictest25-21ksoftirqd/120:47:471
32202993731,3cyclictest25-21ksoftirqd/122:15:001
32202993731,3cyclictest25-21ksoftirqd/119:25:001
3220499369,3cyclictest41-21ksoftirqd/323:00:243
3220499366,3cyclictest41-21ksoftirqd/323:05:233
32204993631,4cyclictest41-21ksoftirqd/320:40:233
32204993630,4cyclictest41-21ksoftirqd/320:30:143
32204993629,4cyclictest41-21ksoftirqd/319:44:193
3220499362,3cyclictest121rcu_preempt00:05:243
32204993610,6cyclictest41-21ksoftirqd/300:35:183
32204993610,6cyclictest41-21ksoftirqd/300:35:173
32203993631,3cyclictest33-21ksoftirqd/220:40:102
32203993630,4cyclictest33-21ksoftirqd/221:13:202
32203993629,4cyclictest33-21ksoftirqd/223:38:172
32202993632,2cyclictest25-21ksoftirqd/123:15:011
32202993631,3cyclictest25-21ksoftirqd/120:20:181
32202993631,3cyclictest25-21ksoftirqd/100:24:591
3220499357,3cyclictest41-21ksoftirqd/319:48:143
3220499354,8cyclictest41-21ksoftirqd/322:55:243
32204993531,2cyclictest41-21ksoftirqd/322:30:133
32204993530,3cyclictest41-21ksoftirqd/323:55:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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