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2026-04-15 - 07:59
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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 50 highest latencies:
System rackcslot4.osadl.org (updated Wed Apr 15, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
543132310269,27sleep10-21swapper/119:07:411
543422300257,28sleep00-21swapper/019:08:000
1088572480,4sleep10-21swapper/121:17:451
179699450,3rtkit-daemon0-21swapper/122:57:431
179699430,3rtkit-daemon0-21swapper/121:50:381
179699430,3rtkit-daemon0-21swapper/121:26:301
179699410,3rtkit-daemon0-21swapper/122:01:291
179699390,3rtkit-daemon0-21swapper/123:06:051
1730852370,25sleep00-21swapper/022:46:500
2087972350,2sleep00-21swapper/023:37:540
5466499309,14cyclictest91002-21apt-get20:40:151
5466499303,20cyclictest234448-21apt-get00:15:141
54664993027,2cyclictest66950irq/132-enp2s022:46:151
5466499300,1cyclictest0-21swapper/120:20:111
5466499296,4cyclictest141rcu_preempt22:35:111
54664992913,11cyclictest89031-21apt-get20:35:131
54664992913,10cyclictest61260-21apt-get19:25:131
54664992811,10cyclictest192054-21apt-get23:15:161
179699280,21rtkit-daemon0-21swapper/121:24:021
5466499277,3cyclictest141rcu_preempt21:10:201
5466499275,3cyclictest141rcu_preempt21:48:041
5466499266,3cyclictest141rcu_preempt00:30:111
54664992616,8cyclictest147402-21ssh22:11:371
5466499260,5cyclictest135764-21ntpq21:55:201
5466099261,7cyclictest216673-21sh23:50:010
2303702260,23sleep1230378-21ssh00:07:081
179699260,18rtkit-daemon0-21swapper/022:36:250
632122250,3sleep063214-21apt-get19:30:120
5466499253,16cyclictest174536-21apt-get22:50:141
54664992522,2cyclictest66950irq/132-enp2s000:37:381
54664992513,6cyclictest66950irq/132-enp2s022:25:131
5466499251,20cyclictest152885-40apt-check22:20:171
5466099253,3cyclictest141rcu_preempt20:35:000
5466099252,4cyclictest141rcu_preempt19:45:000
5466099252,16cyclictest240695-21apt-get00:25:140
5466099252,16cyclictest181656-21apt-get23:00:120
54660992510,5cyclictest13-21ksoftirqd/000:09:220
2353972250,4sleep00-21swapper/000:15:220
179699250,3rtkit-daemon0-21swapper/121:32:501
5466499247,2cyclictest66950irq/132-enp2s022:05:221
5466499244,18cyclictest80593-21latency_hist20:15:021
5466499244,12cyclictest71030-21apt-get19:50:131
5466499242,16cyclictest160298-21apt-get22:30:151
54664992413,7cyclictest66950irq/132-enp2s023:10:141
54664992412,7cyclictest66950irq/132-enp2s023:50:101
54664992412,7cyclictest66950irq/132-enp2s000:02:261
5466499240,6cyclictest200315-21/usr/sbin/munin23:25:231
5466099245,3cyclictest141rcu_preempt22:20:130
5466099245,3cyclictest141rcu_preempt20:05:000
5466099242,16cyclictest92953-21apt-get20:45:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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