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2026-03-23 - 11:04
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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 rackcslot4.osadl.org (updated Mon Mar 23, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4481592269193,28sleep10-21swapper/119:05:581
4481612257215,28sleep00-21swapper/019:05:590
6250392470,1sleep10-21swapper/100:09:211
44867599467,9cyclictest476991-21sendmail-msp20:19:591
179699460,3rtkit-daemon0-21swapper/122:57:331
6447052440,1sleep00-21swapper/000:36:450
44867599449,5cyclictest26-21ksoftirqd/121:20:001
179699440,3rtkit-daemon0-21swapper/123:12:041
179699440,3rtkit-daemon0-21swapper/121:11:291
44867599438,9cyclictest26-21ksoftirqd/121:05:001
44867599437,8cyclictest468758-21sendmail-msp20:00:001
448675994314,5cyclictest26-21ksoftirqd/123:40:011
448675994312,5cyclictest26-21ksoftirqd/122:20:001
448675994312,18cyclictest26-21ksoftirqd/100:00:011
179699430,3rtkit-daemon0-21swapper/121:06:561
4611062420,2sleep00-21swapper/019:40:110
448675994218,5cyclictest26-21ksoftirqd/122:35:011
4530812410,4sleep0453080-21grep19:20:000
448675994110,5cyclictest26-21ksoftirqd/119:25:011
179699410,3rtkit-daemon0-21swapper/121:40:391
179699410,3rtkit-daemon0-21swapper/120:47:491
44867599408,8cyclictest26-21ksoftirqd/120:35:011
44867599407,9cyclictest26-21ksoftirqd/119:35:011
448675994013,4cyclictest26-21ksoftirqd/123:30:011
179699400,8rtkit-daemon575045-21ssh22:58:430
44867599398,9cyclictest26-21ksoftirqd/121:55:011
44867599398,9cyclictest26-21ksoftirqd/100:20:001
44867599398,8cyclictest26-21ksoftirqd/100:35:001
44867599398,18cyclictest489283-21grep20:50:191
44867599397,9cyclictest26-21ksoftirqd/121:50:001
448675993910,4cyclictest26-21ksoftirqd/122:00:011
44867599388,9cyclictest646372-21cat00:40:021
44867599388,9cyclictest26-21ksoftirqd/123:45:011
44867599387,8cyclictest26-21ksoftirqd/122:45:011
44867599387,8cyclictest1-21systemd22:50:001
44867599387,5cyclictest26-21ksoftirqd/120:45:001
44867599386,8cyclictest26-21ksoftirqd/120:15:011
44867599386,5cyclictest26-21ksoftirqd/120:25:011
44867599386,5cyclictest26-21ksoftirqd/120:25:011
44867599385,8cyclictest26-21ksoftirqd/121:25:021
448675993814,4cyclictest26-21ksoftirqd/123:10:011
448675993813,5cyclictest26-21ksoftirqd/100:15:011
448675993811,5cyclictest26-21ksoftirqd/119:15:011
44867599379,5cyclictest26-21ksoftirqd/121:00:001
44867599378,4cyclictest26-21ksoftirqd/119:40:011
44867599377,9cyclictest284-20systemd-journal23:55:001
44867599377,8cyclictest26-21ksoftirqd/123:20:011
44867599376,9cyclictest572095-21ssh22:55:001
44867599376,8cyclictest536659-21wc22:05:011
44867599376,8cyclictest26-21ksoftirqd/120:10:011
44867599376,5cyclictest26-21ksoftirqd/120:30:001
44867599375,8cyclictest26-21ksoftirqd/122:15:001
44867599374,3cyclictest141rcu_preempt20:00:011
44867599368,8cyclictest511573-21munin-run21:30:001
44867599368,5cyclictest26-21ksoftirqd/121:35:001
44867599368,4cyclictest26-21ksoftirqd/119:55:011
44867599367,9cyclictest26-21ksoftirqd/123:35:011
44867599367,9cyclictest26-21ksoftirqd/122:05:231
44867599367,9cyclictest26-21ksoftirqd/100:20:241
44867599367,5cyclictest26-21ksoftirqd/123:00:021
44867599367,5cyclictest26-21ksoftirqd/119:45:001
44867599366,9cyclictest593690-21grep23:25:011
44867599366,9cyclictest26-21ksoftirqd/122:40:011
44867599366,8cyclictest26-21ksoftirqd/121:35:221
44867599366,5cyclictest26-21ksoftirqd/119:20:001
44867499369,11cyclictest141rcu_preempt23:25:130
44867599359,10cyclictest483020-21apt-get20:35:131
44867599358,8cyclictest26-21ksoftirqd/123:45:181
44867599358,5cyclictest26-21ksoftirqd/100:25:251
44867599357,8cyclictest26-21ksoftirqd/122:30:021
44867499351,5cyclictest13-21ksoftirqd/019:25:010
44867499350,4cyclictest13-21ksoftirqd/000:25:000
44867499344,7cyclictest13-21ksoftirqd/022:45:150
44867499343,6cyclictest13-21ksoftirqd/000:30:140
44867599339,8cyclictest26-21ksoftirqd/100:00:491
44867599337,9cyclictest26-21ksoftirqd/122:20:191
448675993312,4cyclictest26-21ksoftirqd/119:26:001
44867499338,4cyclictest141rcu_preempt21:15:120
44867499334,7cyclictest13-21ksoftirqd/021:40:140
44867499331,5cyclictest13-21ksoftirqd/022:40:160
448674993310,2cyclictest141rcu_preempt21:29:090
44867599329,8cyclictest26-21ksoftirqd/119:47:211
44867499323,6cyclictest13-21ksoftirqd/000:05:110
44867499322,7cyclictest13-21ksoftirqd/020:55:290
44867499320,4cyclictest13-21ksoftirqd/022:10:000
44867499319,3cyclictest141rcu_preempt20:05:150
44867499318,4cyclictest141rcu_preempt23:45:130
448674993110,2cyclictest141rcu_preempt23:01:520
44867499309,3cyclictest141rcu_preempt23:10:590
44867499309,3cyclictest141rcu_preempt22:18:140
44867499309,3cyclictest141rcu_preempt20:10:180
44867499309,2cyclictest141rcu_preempt21:11:460
44867499308,3cyclictest141rcu_preempt22:01:390
44867499308,3cyclictest141rcu_preempt00:26:480
44867499308,2cyclictest141rcu_preempt19:45:110
44867499305,6cyclictest13-21ksoftirqd/023:20:120
44867499304,6cyclictest13-21ksoftirqd/022:10:140
44867499302,5cyclictest13-21ksoftirqd/021:05:170
44867499301,4cyclictest13-21ksoftirqd/000:15:220
44867499300,6cyclictest13-21ksoftirqd/022:29:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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