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2026-05-04 - 17:54
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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 Mon May 04, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
281402203171,21sleep20-21swapper/207:05:112
302622201167,22sleep30-21swapper/307:08:533
302942199166,22sleep00-21swapper/007:09:190
300242196162,23sleep10-21swapper/107:05:451
2788221750,5sleep33064699cyclictest09:15:143
1236321680,8sleep23064599cyclictest11:55:272
1811821520,6sleep03064399cyclictest10:00:150
1385521510,6sleep03064399cyclictest07:40:180
311522700,1sleep231153-21irqrtprio08:15:192
217572620,2sleep00-21swapper/009:00:220
160762600,3sleep316079-21hwlatdetect08:50:143
300022560,7sleep23064599cyclictest10:25:002
229612560,2sleep10-21swapper/111:15:141
3064399528,10cyclictest9-21ksoftirqd/012:20:170
289692510,1sleep028972-21cut12:30:190
30643995022,3cyclictest9-21ksoftirqd/008:45:200
138491490,1ptp4l391rcuc/307:18:473
135191480,7getstats3064699cyclictest12:37:583
30643994718,4cyclictest9-21ksoftirqd/007:35:210
30643994613,10cyclictest9-21ksoftirqd/008:30:010
30643994540,3cyclictest9-21ksoftirqd/012:40:000
30643994516,3cyclictest9-21ksoftirqd/010:05:270
3064399450,2cyclictest121rcu_preempt10:35:260
3064399450,2cyclictest121rcu_preempt08:15:000
135191450,8getstats3064699cyclictest11:52:583
50798440,7rtkit-daemon0-21swapper/111:59:401
3064399445,3cyclictest9-21ksoftirqd/007:25:130
30643994414,6cyclictest9-21ksoftirqd/008:20:240
30643994410,6cyclictest9-21ksoftirqd/008:00:010
135191440,7getstats3064699cyclictest11:27:583
3064399437,3cyclictest9-21ksoftirqd/010:20:280
3064399437,3cyclictest9-21ksoftirqd/009:05:140
3064399437,10cyclictest9-21ksoftirqd/009:50:000
30643994314,4cyclictest9-21ksoftirqd/009:10:280
30643994313,3cyclictest9-21ksoftirqd/012:05:170
30643994313,3cyclictest9-21ksoftirqd/012:05:170
138491430,1ptp4l401ktimersoftd/312:14:493
138491430,0ptp4l401ktimersoftd/309:30:193
3064399428,7cyclictest9-21ksoftirqd/008:50:230
3064399428,3cyclictest9-21ksoftirqd/011:30:230
3064399426,3cyclictest9-21ksoftirqd/009:55:170
30643994238,3cyclictest9-21ksoftirqd/007:20:010
30643994230,4cyclictest9-21ksoftirqd/012:20:000
30643994212,7cyclictest9-21ksoftirqd/007:30:140
138491420,1ptp4l401ktimersoftd/311:21:363
138491420,0ptp4l401ktimersoftd/310:15:193
30644994135,3cyclictest25-21ksoftirqd/110:20:011
3064399419,7cyclictest9-21ksoftirqd/011:15:140
3064399417,6cyclictest9-21ksoftirqd/012:15:000
3064399416,3cyclictest9-21ksoftirqd/010:15:260
3064399414,2cyclictest121rcu_preempt10:25:260
3064399413,6cyclictest9-21ksoftirqd/009:35:260
3064399413,5cyclictest9-21ksoftirqd/008:40:190
3064399412,6cyclictest9-21ksoftirqd/010:30:220
3064399411,7cyclictest9-21ksoftirqd/009:40:240
3064399411,7cyclictest9-21ksoftirqd/009:25:210
30643994114,6cyclictest9-21ksoftirqd/010:55:230
138491410,0ptp4l401ktimersoftd/309:45:193
30645994036,2cyclictest33-21ksoftirqd/207:34:592
30644994011,27cyclictest0-21swapper/108:15:131
3064399407,2cyclictest9-21ksoftirqd/008:05:220
30643994035,3cyclictest9-21ksoftirqd/011:45:170
30643994035,2cyclictest9-21ksoftirqd/011:05:000
3064399401,7cyclictest9-21ksoftirqd/009:50:260
3064399401,6cyclictest9-21ksoftirqd/011:55:240
30643994013,4cyclictest9-21ksoftirqd/009:15:150
138491400,0ptp4l401ktimersoftd/311:05:033
138491400,0ptp4l401ktimersoftd/310:41:473
134991400,1getstats0-21swapper/311:58:213
30646993935,2cyclictest41-21ksoftirqd/311:20:003
30646993935,2cyclictest41-21ksoftirqd/309:00:003
30645993933,3cyclictest33-21ksoftirqd/212:35:002
3064399399,4cyclictest9-21ksoftirqd/007:54:020
3064399399,4cyclictest9-21ksoftirqd/007:54:020
30643993933,3cyclictest9-21ksoftirqd/011:40:000
30643993933,3cyclictest9-21ksoftirqd/011:25:000
3064399392,5cyclictest9-21ksoftirqd/011:50:290
30643993911,6cyclictest9-21ksoftirqd/007:20:230
30643993910,6cyclictest9-21ksoftirqd/009:30:170
30643993910,3cyclictest9-21ksoftirqd/010:45:000
3064399390,6cyclictest9-21ksoftirqd/010:50:130
138491390,0ptp4l401ktimersoftd/308:45:163
138491390,0ptp4l401ktimersoftd/307:33:493
3064399389,3cyclictest9-21ksoftirqd/009:22:560
3064399387,4cyclictest9-21ksoftirqd/012:25:270
3064399385,4cyclictest9-21ksoftirqd/008:15:130
3064399383,6cyclictest9-21ksoftirqd/012:00:110
30643993833,3cyclictest9-21ksoftirqd/011:15:000
3064399383,2cyclictest121rcu_preempt08:30:260
30643993832,3cyclictest9-21ksoftirqd/010:10:130
30643993810,6cyclictest9-21ksoftirqd/008:55:120
30646993732,3cyclictest5387-21cron08:30:013
30646993731,4cyclictest41-21ksoftirqd/308:15:363
30646993726,9cyclictest41-21ksoftirqd/311:40:233
30645993732,3cyclictest33-21ksoftirqd/209:40:002
30645993730,4cyclictest33-21ksoftirqd/211:15:132
30645993726,9cyclictest33-21ksoftirqd/209:55:182
30645993714,4cyclictest33-21ksoftirqd/210:30:182
30644993730,5cyclictest25-21ksoftirqd/112:20:411
3064399374,2cyclictest121rcu_preempt08:35:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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