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2026-04-17 - 02:54
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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 Apr 16, 2026 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591209174,23phc2sys0-21swapper/307:06:073
124632201168,21sleep00-21swapper/007:08:430
125222200167,22sleep20-21swapper/207:09:292
122582200167,22sleep10-21swapper/107:06:041
263692640,7sleep0101ktimersoftd/010:50:200
195652530,6sleep219567-21ptp4l-jitter11:40:242
286222520,4sleep0111rcuc/010:55:170
138491510,0ptp4l401ktimersoftd/309:20:313
12864995118,11cyclictest41-21ksoftirqd/307:15:183
12864994920,8cyclictest41-21ksoftirqd/310:45:203
12864994830,4cyclictest41-21ksoftirqd/308:40:183
12864994729,9cyclictest41-21ksoftirqd/310:40:003
1286199476,9cyclictest9-21ksoftirqd/009:45:010
12864994526,10cyclictest41-21ksoftirqd/309:45:233
138491440,0ptp4l401ktimersoftd/309:53:123
12862994428,7cyclictest25-21ksoftirqd/110:20:131
138491430,0ptp4l401ktimersoftd/310:32:553
138491430,0ptp4l401ktimersoftd/310:07:393
138491430,0ptp4l401ktimersoftd/308:25:113
12864994311,10cyclictest41-21ksoftirqd/312:10:003
12863994211,29cyclictest0-21swapper/207:30:342
12862994226,7cyclictest25-21ksoftirqd/112:05:191
12862994226,7cyclictest25-21ksoftirqd/110:05:211
12862994226,6cyclictest25-21ksoftirqd/109:10:211
12862994226,6cyclictest25-21ksoftirqd/107:30:171
1286199428,9cyclictest9-21ksoftirqd/009:10:270
1286199424,3cyclictest121rcu_preempt07:30:010
12861994236,3cyclictest9-21ksoftirqd/007:49:590
1286199421,11cyclictest9-21ksoftirqd/007:15:130
12864994137,2cyclictest41-21ksoftirqd/311:20:013
1286499410,4cyclictest11768-21strings08:10:213
1286299414,3cyclictest121rcu_preempt07:45:001
12862994126,6cyclictest25-21ksoftirqd/112:35:171
12862994126,3cyclictest25-21ksoftirqd/110:10:101
1286199415,3cyclictest9-21ksoftirqd/007:45:000
12864994028,6cyclictest41-21ksoftirqd/311:45:253
12864994027,6cyclictest41-21ksoftirqd/308:30:223
12864994019,10cyclictest41-21ksoftirqd/311:30:153
12863994035,3cyclictest33-21ksoftirqd/209:20:012
12863994030,9cyclictest33-21ksoftirqd/208:50:212
1286399400,38cyclictest0-21swapper/209:55:332
12862994035,3cyclictest25-21ksoftirqd/109:00:001
12862994035,2cyclictest25-21ksoftirqd/110:40:011
12862994026,3cyclictest25-21ksoftirqd/109:20:131
12862994025,3cyclictest25-21ksoftirqd/110:50:201
12862994025,3cyclictest25-21ksoftirqd/110:30:271
12862994024,3cyclictest25-21ksoftirqd/108:09:591
12861994025,3cyclictest9-21ksoftirqd/010:00:230
1286199402,3cyclictest121rcu_preempt08:05:220
50798390,7rtkit-daemon0-21swapper/310:19:103
12864993933,3cyclictest41-21ksoftirqd/309:04:593
12862993934,3cyclictest25-21ksoftirqd/111:55:001
1286299393,3cyclictest121rcu_preempt09:25:131
1286299393,3cyclictest121rcu_preempt09:25:131
12862993933,3cyclictest17558-21cron07:20:001
12862993925,3cyclictest25-21ksoftirqd/109:50:201
12862993924,3cyclictest25-21ksoftirqd/112:30:131
1286199395,3cyclictest121rcu_preempt11:20:280
1286199394,2cyclictest121rcu_preempt09:20:150
12861993934,3cyclictest9-21ksoftirqd/010:35:000
12861993924,4cyclictest9-21ksoftirqd/012:15:250
1286199392,3cyclictest121rcu_preempt11:45:000
12861993923,3cyclictest9-21ksoftirqd/008:25:120
1286199391,3cyclictest9-21ksoftirqd/010:06:400
12864993833,3cyclictest41-21ksoftirqd/309:40:003
12864993831,5cyclictest41-21ksoftirqd/310:59:253
12864993820,9cyclictest41-21ksoftirqd/310:25:193
12864993819,11cyclictest41-21ksoftirqd/310:40:133
12863993833,3cyclictest33-21ksoftirqd/211:10:002
12863993833,3cyclictest33-21ksoftirqd/211:10:002
1286399380,36cyclictest0-21swapper/210:14:342
1286299385,10cyclictest25-21ksoftirqd/111:35:141
12862993833,3cyclictest25-21ksoftirqd/109:05:131
12862993832,3cyclictest25-21ksoftirqd/111:55:131
12862993832,3cyclictest25-21ksoftirqd/110:00:261
12862993823,8cyclictest25-21ksoftirqd/107:10:211
12862993823,3cyclictest25-21ksoftirqd/110:45:231
1286299381,3cyclictest121rcu_preempt07:50:211
1286199387,5cyclictest9-21ksoftirqd/012:20:190
1286199384,2cyclictest121rcu_preempt11:32:570
12861993825,5cyclictest9-21ksoftirqd/009:00:150
12861993825,3cyclictest9-21ksoftirqd/010:20:210
12861993823,3cyclictest9-21ksoftirqd/008:55:220
1286199381,3cyclictest121rcu_preempt12:35:130
1286199381,3cyclictest121rcu_preempt12:00:260
1286199380,3cyclictest121rcu_preempt09:15:160
1286199380,2cyclictest121rcu_preempt11:05:140
1286199380,2cyclictest121rcu_preempt11:05:140
138491370,0ptp4l401ktimersoftd/309:10:233
12863993732,3cyclictest33-21ksoftirqd/207:50:412
12863993731,4cyclictest33-21ksoftirqd/212:22:362
12863993731,4cyclictest33-21ksoftirqd/207:17:002
12863993731,3cyclictest33-21ksoftirqd/209:52:582
12862993732,3cyclictest25-21ksoftirqd/112:15:211
12862993731,3cyclictest25-21ksoftirqd/108:35:241
12862993724,4cyclictest25-21ksoftirqd/109:45:211
12862993724,3cyclictest25-21ksoftirqd/112:25:011
12862993723,3cyclictest25-21ksoftirqd/111:30:261
12862993722,3cyclictest25-21ksoftirqd/111:10:261
12862993722,3cyclictest25-21ksoftirqd/111:00:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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