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2026-09-07 - 15:58
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6.osadl.org (updated Mon Sep 07, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
605629938,42sleep00-21swapper/007:05:180
7452998133,43cyclictest26-21ksoftirqd/108:27:381
671627432,29sleep10-21swapper/107:05:301
7448997353,15cyclictest0-21swapper/007:10:150
7452996833,29cyclictest26-21ksoftirqd/110:05:341
744899675,53cyclictest12607-21apt-get10:25:120
7448996736,26cyclictest14-21ksoftirqd/007:40:190
7452996623,39cyclictest26-21ksoftirqd/111:40:261
7452996534,17cyclictest26-21ksoftirqd/109:22:041
744899657,17cyclictest0-21swapper/010:10:140
7448996529,9cyclictest14-21ksoftirqd/009:21:180
87112640,8chrt0-21swapper/108:40:331
744899647,16cyclictest0-21swapper/009:35:150
7448996430,29cyclictest14-21ksoftirqd/007:45:280
7452996237,9cyclictest26-21ksoftirqd/112:23:381
7452996234,9cyclictest26-21ksoftirqd/107:34:581
744899627,50cyclictest0-21swapper/011:50:110
744899622,24cyclictest7898-21grep11:40:360
744899616,14cyclictest0-21swapper/009:10:140
744899616,14cyclictest0-21swapper/009:05:130
744899616,14cyclictest0-21swapper/009:05:130
7452996037,8cyclictest26-21ksoftirqd/111:45:471
7452996036,9cyclictest26-21ksoftirqd/112:05:531
7452996036,9cyclictest26-21ksoftirqd/111:10:221
7452996036,9cyclictest26-21ksoftirqd/110:13:271
745299602,36cyclictest151rcu_preempt09:47:501
744899606,48cyclictest0-21swapper/011:55:120
744899605,18cyclictest32256-21apt-get11:20:100
7448996028,17cyclictest14-21ksoftirqd/010:20:210
744899602,23cyclictest15031-21latency_hist09:00:000
7452995935,9cyclictest26-21ksoftirqd/107:40:031
745299592,34cyclictest151rcu_preempt07:52:561
7452995916,8cyclictest26-21ksoftirqd/111:35:181
7448995937,17cyclictest14-21ksoftirqd/009:17:440
7448995936,17cyclictest14-21ksoftirqd/008:20:260
7452995835,9cyclictest26-21ksoftirqd/112:19:471
7452995835,9cyclictest26-21ksoftirqd/111:51:161
7452995835,9cyclictest26-21ksoftirqd/109:51:421
7452995835,9cyclictest26-21ksoftirqd/108:00:101
7452995834,9cyclictest26-21ksoftirqd/107:57:391
7452995817,8cyclictest26-21ksoftirqd/111:20:261
744899589,14cyclictest0-21swapper/009:25:120
7448995836,17cyclictest14-21ksoftirqd/011:04:400
7448995836,17cyclictest14-21ksoftirqd/008:28:240
7448995833,19cyclictest14-21ksoftirqd/009:52:560
7448995831,21cyclictest457-21dbus-daemon09:50:000
744899582,17cyclictest17190-21cron12:10:000
745299576,45cyclictest24863-21sort12:30:241
7452995734,8cyclictest26-21ksoftirqd/110:46:061
7452995734,8cyclictest26-21ksoftirqd/108:13:301
7452995734,17cyclictest481-21gdbus11:19:551
7452995732,10cyclictest26-21ksoftirqd/109:27:201
7452995714,38cyclictest0-21swapper/109:55:121
7452995710,18cyclictest0-21swapper/112:00:121
7452995710,17cyclictest0-21swapper/110:40:141
7448995735,15cyclictest0-21swapper/012:35:150
7448995726,17cyclictest14-21ksoftirqd/008:50:260
7452995634,8cyclictest26-21ksoftirqd/108:56:541
7452995634,8cyclictest26-21ksoftirqd/107:48:101
7452995633,8cyclictest26-21ksoftirqd/111:56:011
7452995633,8cyclictest26-21ksoftirqd/110:34:361
7452995633,8cyclictest26-21ksoftirqd/107:14:031
7452995632,9cyclictest26-21ksoftirqd/108:48:481
7452995632,9cyclictest26-21ksoftirqd/108:15:501
745299562,20cyclictest21960-21chrt09:19:011
7452995612,39cyclictest0-21swapper/112:25:131
7452995610,40cyclictest0-21swapper/110:50:181
7448995635,16cyclictest14-21ksoftirqd/010:47:300
7448995631,19cyclictest457-21dbus-daemon08:00:000
744899562,49cyclictest25491-21users12:30:360
7448995614,11cyclictest171rcuc/009:00:200
745299558,41cyclictest0-21swapper/107:35:151
745299556,11cyclictest0-21swapper/110:55:201
7452995531,9cyclictest26-21ksoftirqd/109:04:361
7452995531,8cyclictest26-21ksoftirqd/111:32:001
7452995512,38cyclictest0-21swapper/107:20:381
744899556,44cyclictest30946-21cut09:45:010
7448995542,8cyclictest14-21ksoftirqd/011:07:180
7448995532,17cyclictest14-21ksoftirqd/010:02:090
744899553,14cyclictest26552-21python308:00:310
744899552,19cyclictest11528-21latency_hist07:20:020
744899552,15cyclictest17602-21cpuspeed12:10:180
7448995518,15cyclictest14-21ksoftirqd/008:05:280
745299544,46cyclictest0-21swapper/107:16:541
745299544,11cyclictest27815-21df_inode09:35:201
745299544,10cyclictest0-21swapper/108:32:411
7452995437,11cyclictest0-21swapper/109:30:181
7452995436,11cyclictest0-21swapper/110:35:151
7452995436,11cyclictest0-21swapper/110:35:151
7452995431,8cyclictest26-21ksoftirqd/112:35:411
7452995411,38cyclictest0-21swapper/111:00:081
744899549,40cyclictest0-21swapper/008:45:190
7448995433,16cyclictest14-21ksoftirqd/012:18:070
7448995432,17cyclictest14-21ksoftirqd/009:57:190
7448995432,17cyclictest14-21ksoftirqd/007:26:180
7448995431,17cyclictest14-21ksoftirqd/010:34:310
7448995426,12cyclictest14-21ksoftirqd/008:30:110
7448995422,17cyclictest14-21ksoftirqd/012:20:170
7448995414,15cyclictest171rcuc/011:10:350
7448995414,13cyclictest14-21ksoftirqd/007:50:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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