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2026-03-31 - 04:23
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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 20 highest latencies:
System rackcslot4.osadl.org (updated Tue Mar 31, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14281922277213,48sleep00-21swapper/019:08:330
14281812258179,28sleep10-21swapper/119:08:261
14527742890,5chrt1452512-21python320:10:021
179699580,3rtkit-daemon1795-21rtkit-daemon23:51:161
179699570,4rtkit-daemon1795-21rtkit-daemon20:29:560
14832852540,6sleep10-21swapper/121:18:431
179699530,4rtkit-daemon1795-21rtkit-daemon23:39:500
179699520,4rtkit-daemon1795-21rtkit-daemon23:05:350
14982122520,3sleep00-21swapper/021:40:150
179699490,3rtkit-daemon1795-21rtkit-daemon23:47:031
179699470,4rtkit-daemon1795-21rtkit-daemon19:38:220
15830322470,4sleep00-21swapper/023:40:180
179699450,6rtkit-daemon1600720-21apt-get00:05:171
179699410,7rtkit-daemon1569881-21/usr/sbin/munin23:20:220
179699390,6rtkit-daemon1430522-21munin-node19:42:131
179699380,4rtkit-daemon1476505-21diskmemload23:19:471
179699380,3rtkit-daemon0-21swapper/122:34:131
179699370,6rtkit-daemon1476505-21diskmemload00:36:201
179699360,3rtkit-daemon0-21swapper/123:22:441
179699360,3rtkit-daemon0-21swapper/120:43:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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