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2026-03-12 - 22:57
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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 Mar 12, 2026 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
236972203168,23sleep00-21swapper/007:07:080
138591203169,23phc2sys0-21swapper/307:09:033
236942201169,21sleep20-21swapper/207:07:062
237412200168,21sleep10-21swapper/107:07:411
138491800,1ptp4l32096-21diskstats07:25:153
138491660,1ptp4l401ktimersoftd/309:40:153
62272650,6sleep22421699cyclictest12:00:112
24214996424,6cyclictest9-21ksoftirqd/009:50:260
24214996128,6cyclictest9-21ksoftirqd/011:10:010
24214996127,6cyclictest9-21ksoftirqd/011:25:260
24214996123,7cyclictest9-21ksoftirqd/008:25:170
24214996030,8cyclictest9-21ksoftirqd/009:50:000
24214996029,4cyclictest9-21ksoftirqd/011:40:000
24214996027,4cyclictest9-21ksoftirqd/009:25:140
24216995913,4cyclictest33-21ksoftirqd/208:40:232
24214995931,8cyclictest9-21ksoftirqd/009:55:180
24214995928,4cyclictest9-21ksoftirqd/010:20:270
24214995927,5cyclictest9-21ksoftirqd/010:10:180
24214995927,4cyclictest9-21ksoftirqd/011:15:120
24214995926,4cyclictest9-21ksoftirqd/012:30:120
24214995925,6cyclictest9-21ksoftirqd/009:10:270
24214995923,6cyclictest9-21ksoftirqd/010:05:240
2421699589,5cyclictest33-21ksoftirqd/208:45:282
24214995830,4cyclictest9-21ksoftirqd/010:15:240
24214995823,7cyclictest9-21ksoftirqd/012:00:170
24214995823,5cyclictest9-21ksoftirqd/008:20:130
24214995822,7cyclictest9-21ksoftirqd/010:45:130
24214995820,6cyclictest9-21ksoftirqd/009:30:160
24214995728,3cyclictest9-21ksoftirqd/011:20:180
24214995726,6cyclictest9-21ksoftirqd/011:00:120
24214995726,5cyclictest9-21ksoftirqd/012:15:150
24214995726,4cyclictest9-21ksoftirqd/011:30:160
24214995726,3cyclictest9-21ksoftirqd/009:40:000
24214995723,4cyclictest9-21ksoftirqd/010:25:140
24214995718,4cyclictest9-21ksoftirqd/012:20:230
24214995628,4cyclictest9-21ksoftirqd/009:20:180
24214995626,6cyclictest9-21ksoftirqd/011:50:250
114992560,2sleep20-21swapper/208:55:132
24214995527,5cyclictest9-21ksoftirqd/010:55:220
24214995527,4cyclictest9-21ksoftirqd/007:30:120
24216995417,9cyclictest33-21ksoftirqd/211:35:152
24214995423,6cyclictest9-21ksoftirqd/009:00:200
24214995418,5cyclictest9-21ksoftirqd/012:05:130
24217995320,15cyclictest41-21ksoftirqd/307:20:263
2421699539,4cyclictest33-21ksoftirqd/208:50:202
2421499533,6cyclictest9-21ksoftirqd/011:45:180
2421499533,6cyclictest9-21ksoftirqd/011:45:180
2421499533,6cyclictest9-21ksoftirqd/010:50:240
24214995329,10cyclictest9-21ksoftirqd/009:15:250
24214995329,10cyclictest9-21ksoftirqd/009:15:250
24214995324,7cyclictest9-21ksoftirqd/008:00:160
24214995320,6cyclictest9-21ksoftirqd/011:10:210
24214995320,5cyclictest9-21ksoftirqd/007:10:190
24217995219,9cyclictest41-21ksoftirqd/307:10:123
2421499525,7cyclictest9-21ksoftirqd/012:10:150
2421499525,6cyclictest9-21ksoftirqd/008:30:210
2421499524,6cyclictest9-21ksoftirqd/012:25:230
2421499524,4cyclictest9-21ksoftirqd/007:40:250
2421499522,7cyclictest9-21ksoftirqd/011:40:210
24214995218,5cyclictest9-21ksoftirqd/008:05:240
24214995217,5cyclictest9-21ksoftirqd/011:55:150
24216995115,4cyclictest33-21ksoftirqd/209:10:192
2421499514,6cyclictest9-21ksoftirqd/007:55:170
2421499513,2cyclictest121rcu_preempt10:40:000
2421499504,6cyclictest9-21ksoftirqd/007:40:000
2421499503,10cyclictest9-21ksoftirqd/010:30:120
2421499502,7cyclictest9-21ksoftirqd/012:35:240
2421499502,5cyclictest9-21ksoftirqd/007:15:160
24214995018,6cyclictest9-21ksoftirqd/009:07:580
24217994916,3cyclictest41-21ksoftirqd/309:55:013
2421499495,6cyclictest9-21ksoftirqd/007:55:000
2421499495,6cyclictest9-21ksoftirqd/007:55:000
2421499494,6cyclictest9-21ksoftirqd/008:50:000
24214994924,6cyclictest9-21ksoftirqd/008:40:250
2421499490,4cyclictest9-21ksoftirqd/010:45:010
24216994818,4cyclictest33-21ksoftirqd/209:15:252
24216994818,4cyclictest33-21ksoftirqd/209:15:252
24216994811,10cyclictest33-21ksoftirqd/210:55:182
24216994810,5cyclictest33-21ksoftirqd/207:20:242
2421499484,7cyclictest9-21ksoftirqd/008:15:270
2421499483,6cyclictest9-21ksoftirqd/009:40:210
2421499482,6cyclictest9-21ksoftirqd/010:00:120
2421499481,6cyclictest9-21ksoftirqd/008:55:250
24217994712,14cyclictest41-21ksoftirqd/312:20:143
24216994719,3cyclictest33-21ksoftirqd/207:15:002
24216994711,8cyclictest33-21ksoftirqd/207:15:152
24216994711,3cyclictest33-21ksoftirqd/210:50:232
2421499475,8cyclictest9-21ksoftirqd/007:50:000
2421499474,5cyclictest9-21ksoftirqd/008:10:160
2421499473,2cyclictest121rcu_preempt07:30:000
2421499470,5cyclictest9-21ksoftirqd/008:40:010
24217994616,5cyclictest41-21ksoftirqd/308:55:213
2421699466,8cyclictest33-21ksoftirqd/207:40:002
2421699461,10cyclictest33-21ksoftirqd/209:05:172
138491460,1ptp4l0-21swapper/311:14:593
2421699450,5cyclictest33-21ksoftirqd/210:10:232
2421699450,5cyclictest33-21ksoftirqd/208:25:172
2421499455,6cyclictest9-21ksoftirqd/007:25:010
24216994439,2cyclictest33-21ksoftirqd/211:20:002
24216994411,8cyclictest33-21ksoftirqd/209:45:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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