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2026-09-20 - 00:52
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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 Sep 19, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36672206171,23sleep30-21swapper/307:06:503
37782204170,22sleep20-21swapper/207:08:192
37222202168,22sleep10-21swapper/107:07:331
38132200166,22sleep00-21swapper/007:08:450
2411321710,5sleep0420999cyclictest07:50:010
1786821690,6sleep3421299cyclictest07:35:183
47221310,2sleep1421099cyclictest12:25:221
84272670,2sleep30-21swapper/309:25:243
138491660,1ptp4l391rcuc/310:28:423
257912620,5sleep225795-21ptp4l11:05:232
421299576,11cyclictest18682-21chrt10:50:563
138491540,1ptp4l391rcuc/310:15:343
421299536,12cyclictest16427-21chrt10:48:313
421299514,15cyclictest30889-21ps11:15:233
421299505,11cyclictest23453-21switchtime11:00:263
421199487,6cyclictest3316-21date11:25:242
421299461,42cyclictest6828-21cat11:35:003
421199449,5cyclictest33-21ksoftirqd/208:13:372
138491430,0ptp4l401ktimersoftd/310:08:223
138491430,0ptp4l401ktimersoftd/309:43:493
138491430,0ptp4l401ktimersoftd/309:24:403
4210994237,3cyclictest25-21ksoftirqd/111:00:001
138491420,0ptp4l401ktimersoftd/310:58:273
138491420,0ptp4l401ktimersoftd/308:40:003
4211994112,27cyclictest0-21swapper/207:30:232
4212994010,17cyclictest16199-21awk07:30:273
4209993925,5cyclictest9-21ksoftirqd/009:20:590
421299381,5cyclictest0-21swapper/307:50:233
4211993832,4cyclictest33-21ksoftirqd/212:30:482
4210993831,4cyclictest25-21ksoftirqd/109:56:461
4209993832,4cyclictest9-21ksoftirqd/009:31:380
4209993831,3cyclictest9-21ksoftirqd/011:44:250
421299374,10cyclictest0-21swapper/309:38:343
4212993730,4cyclictest41-21ksoftirqd/308:34:013
421199377,5cyclictest8418-21ls10:30:262
4211993731,4cyclictest33-21ksoftirqd/210:43:412
4211993731,4cyclictest33-21ksoftirqd/209:59:202
4211993731,3cyclictest29909-21cut10:10:192
4210993731,4cyclictest25-21ksoftirqd/108:10:111
4210993730,4cyclictest25-21ksoftirqd/109:00:021
421299364,16cyclictest1303-21runrttasks08:08:273
421299363,12cyclictest10926-21cat08:25:253
4212993630,4cyclictest41-21ksoftirqd/312:35:473
4212993629,4cyclictest41-21ksoftirqd/309:32:343
4211993633,2cyclictest311rcuc/210:35:002
4211993630,4cyclictest33-21ksoftirqd/212:22:102
4211993630,4cyclictest33-21ksoftirqd/208:41:342
4211993630,4cyclictest33-21ksoftirqd/208:04:542
4210993631,3cyclictest25-21ksoftirqd/111:00:161
4210993631,3cyclictest25-21ksoftirqd/110:10:121
4210993631,3cyclictest25-21ksoftirqd/108:20:131
4210993630,4cyclictest25-21ksoftirqd/110:38:431
421099361,2cyclictest121rcu_preempt09:20:581
4209993631,3cyclictest9-21ksoftirqd/011:10:200
4209993631,3cyclictest9-21ksoftirqd/010:48:140
4209993630,3cyclictest9-21ksoftirqd/012:15:110
421299353,11cyclictest4074-21cat10:25:003
4212993530,3cyclictest41-21ksoftirqd/311:25:123
4212993529,4cyclictest41-21ksoftirqd/309:57:283
4212993529,4cyclictest41-21ksoftirqd/309:01:173
4212993529,4cyclictest41-21ksoftirqd/307:41:283
4212993528,4cyclictest41-21ksoftirqd/307:17:503
4211993529,4cyclictest33-21ksoftirqd/212:17:362
4211993529,4cyclictest33-21ksoftirqd/209:38:012
4211993528,5cyclictest33-21ksoftirqd/207:47:102
4210993529,4cyclictest25-21ksoftirqd/111:38:201
4210993529,4cyclictest25-21ksoftirqd/111:19:061
4210993529,4cyclictest25-21ksoftirqd/110:24:581
4210993529,4cyclictest25-21ksoftirqd/109:16:101
4210993529,4cyclictest25-21ksoftirqd/109:07:151
4210993529,4cyclictest25-21ksoftirqd/108:40:361
4210993529,4cyclictest25-21ksoftirqd/108:08:471
4210993529,3cyclictest25-21ksoftirqd/109:50:111
4210993528,5cyclictest25-21ksoftirqd/108:18:331
4209993530,3cyclictest9-21ksoftirqd/012:30:110
4209993530,3cyclictest9-21ksoftirqd/011:45:050
4209993529,4cyclictest9-21ksoftirqd/009:10:440
4209993529,4cyclictest9-21ksoftirqd/008:20:130
4209993528,4cyclictest9-21ksoftirqd/011:08:020
421299344,11cyclictest27941-21cat12:15:213
4212993429,3cyclictest41-21ksoftirqd/310:35:573
4212993428,4cyclictest41-21ksoftirqd/307:56:543
4212993428,4cyclictest41-21ksoftirqd/307:47:553
4212993428,4cyclictest41-21ksoftirqd/307:26:413
4212993428,3cyclictest41-21ksoftirqd/309:16:163
421299342,4cyclictest41-21ksoftirqd/312:05:183
4211993430,3cyclictest33-21ksoftirqd/212:25:242
4211993429,3cyclictest33-21ksoftirqd/211:42:062
4211993428,4cyclictest33-21ksoftirqd/211:24:022
4211993428,4cyclictest33-21ksoftirqd/211:15:352
4211993428,4cyclictest33-21ksoftirqd/210:29:572
4211993428,4cyclictest33-21ksoftirqd/209:41:352
4211993428,4cyclictest33-21ksoftirqd/209:33:482
4211993428,4cyclictest33-21ksoftirqd/209:26:462
4211993428,4cyclictest33-21ksoftirqd/207:53:392
4211993428,4cyclictest33-21ksoftirqd/207:40:282
4211993427,4cyclictest33-21ksoftirqd/207:26:392
4210993429,3cyclictest25-21ksoftirqd/110:25:061
4210993429,3cyclictest25-21ksoftirqd/107:15:321
4210993428,4cyclictest25-21ksoftirqd/110:04:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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