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2026-05-28 - 16:26
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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 Thu May 28, 2026 12:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591205172,22phc2sys0-21swapper/307:09:573
27272202169,22sleep20-21swapper/207:05:362
29432201167,23sleep10-21swapper/107:08:241
29922200167,22sleep00-21swapper/007:09:030
3233521550,2sleep2336999cyclictest08:05:252
1982021400,6sleep3337099cyclictest07:40:223
1385918261,11phc2sys0-21swapper/307:10:003
138491780,1ptp4l391rcuc/309:40:143
138491640,1ptp4l401ktimersoftd/308:40:123
316532590,5sleep341-21ksoftirqd/308:05:173
20942590,7sleep2336999cyclictest10:20:242
138491590,0ptp4l401ktimersoftd/311:21:173
235852570,5sleep323584-21latency_hist12:10:013
137142520,1sleep10-21swapper/111:50:131
132342510,3sleep20-21swapper/208:35:142
307525035,7sleep10-21swapper/107:10:001
3367994640,3cyclictest30702-21sh11:19:590
3368994415,4cyclictest25-21ksoftirqd/109:00:131
3368994411,7cyclictest25-21ksoftirqd/110:20:191
138491440,0ptp4l401ktimersoftd/312:30:063
138491430,0ptp4l401ktimersoftd/312:35:373
138491430,0ptp4l401ktimersoftd/309:48:493
337099421,3cyclictest121rcu_preempt08:11:033
3369994227,7cyclictest33-21ksoftirqd/208:11:022
3368994237,3cyclictest25-21ksoftirqd/111:40:001
3368994214,4cyclictest25-21ksoftirqd/108:20:171
138491420,0ptp4l401ktimersoftd/307:53:523
3370994127,12cyclictest41-21ksoftirqd/311:00:003
3370994127,12cyclictest41-21ksoftirqd/311:00:003
336899419,4cyclictest25-21ksoftirqd/109:15:271
3368994136,3cyclictest25-21ksoftirqd/108:30:121
3368994135,3cyclictest25-21ksoftirqd/111:14:591
138491410,1ptp4l401ktimersoftd/308:17:473
138491410,0ptp4l401ktimersoftd/309:15:233
3368994011,3cyclictest25-21ksoftirqd/110:55:201
3368994011,3cyclictest25-21ksoftirqd/110:55:201
138491400,1ptp4l401ktimersoftd/307:19:183
336899395,4cyclictest25-21ksoftirqd/109:10:131
3368993934,2cyclictest25-21ksoftirqd/112:30:001
336899391,5cyclictest25-21ksoftirqd/109:55:161
336899390,3cyclictest25-21ksoftirqd/112:10:171
3369993834,3cyclictest33-21ksoftirqd/210:30:192
3369993832,4cyclictest33-21ksoftirqd/209:50:012
336899388,4cyclictest25-21ksoftirqd/107:55:261
336899387,2cyclictest25-21ksoftirqd/110:15:161
336899384,3cyclictest121rcu_preempt11:30:171
3368993834,3cyclictest25-21ksoftirqd/111:15:221
3368993833,3cyclictest25-21ksoftirqd/110:45:001
3368993832,3cyclictest25-21ksoftirqd/110:25:171
3368993832,3cyclictest25-21ksoftirqd/108:40:001
336899381,5cyclictest25-21ksoftirqd/111:00:241
3368993811,6cyclictest25-21ksoftirqd/108:00:131
3368993810,4cyclictest25-21ksoftirqd/109:43:551
3368993810,3cyclictest25-21ksoftirqd/108:40:171
3370993731,4cyclictest41-21ksoftirqd/308:31:173
3369993732,3cyclictest33-21ksoftirqd/209:34:592
3369993732,3cyclictest33-21ksoftirqd/207:40:002
3369993731,4cyclictest33-21ksoftirqd/212:31:142
3369993731,4cyclictest33-21ksoftirqd/208:56:242
3369993731,4cyclictest33-21ksoftirqd/208:30:012
336899374,3cyclictest121rcu_preempt10:10:111
336899374,2cyclictest121rcu_preempt11:55:121
336899374,2cyclictest121rcu_preempt11:55:121
3368993733,2cyclictest25-21ksoftirqd/109:30:171
3368993733,2cyclictest231rcuc/111:25:121
3368993733,2cyclictest231rcuc/111:25:121
3368993732,3cyclictest25-21ksoftirqd/112:00:131
3368993732,3cyclictest25-21ksoftirqd/111:05:251
3368993732,3cyclictest25-21ksoftirqd/107:25:131
3368993732,2cyclictest25-21ksoftirqd/110:55:001
3368993731,3cyclictest25-21ksoftirqd/110:35:241
3368993731,3cyclictest25-21ksoftirqd/109:50:131
336899372,3cyclictest25-21ksoftirqd/107:20:181
336899371,3cyclictest25-21ksoftirqd/109:35:181
3367993732,3cyclictest9-21ksoftirqd/010:40:070
3367993731,4cyclictest9-21ksoftirqd/012:11:220
3370993631,3cyclictest41-21ksoftirqd/311:55:003
3370993631,3cyclictest41-21ksoftirqd/308:47:563
3370993630,4cyclictest41-21ksoftirqd/312:25:343
3370993630,4cyclictest41-21ksoftirqd/310:28:473
3370993630,4cyclictest41-21ksoftirqd/310:12:103
3370993630,4cyclictest41-21ksoftirqd/307:26:553
3369993630,4cyclictest33-21ksoftirqd/211:45:322
3369993630,4cyclictest33-21ksoftirqd/211:39:112
3369993630,4cyclictest33-21ksoftirqd/211:03:362
3369993629,4cyclictest33-21ksoftirqd/212:38:412
336899365,4cyclictest25-21ksoftirqd/112:20:221
336899364,2cyclictest121rcu_preempt10:00:121
336899363,3cyclictest25-21ksoftirqd/112:15:141
336899363,3cyclictest25-21ksoftirqd/108:15:191
336899363,2cyclictest121rcu_preempt08:45:201
3368993631,3cyclictest25-21ksoftirqd/110:30:271
3368993631,3cyclictest25-21ksoftirqd/110:05:121
3368993631,3cyclictest25-21ksoftirqd/109:50:001
3368993631,2cyclictest25-21ksoftirqd/107:30:261
3368993629,4cyclictest25-21ksoftirqd/107:52:591
336899361,5cyclictest25-21ksoftirqd/108:25:231
3367993629,5cyclictest9-21ksoftirqd/007:29:520
3370993530,3cyclictest41-21ksoftirqd/309:57:403
3370993529,4cyclictest41-21ksoftirqd/311:16:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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