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2026-03-24 - 19:24
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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 rackdslot3.osadl.org (updated Tue Mar 24, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
312402206173,22sleep10-21swapper/107:08:141
312792205171,22sleep30-21swapper/307:08:443
312812203169,22sleep00-21swapper/007:08:450
311542201168,22sleep20-21swapper/207:07:062
941721330,5sleep13168099cyclictest08:35:261
941721330,5sleep13168099cyclictest08:35:261
323322620,1sleep00-21swapper/007:10:160
31680996016,10cyclictest25-21ksoftirqd/111:20:001
3168299578,17cyclictest1300-21snmpd10:27:363
139391570,1ptp4l391rcuc/311:40:193
44502540,3sleep30-21swapper/307:20:143
3168299549,17cyclictest31366-21cat10:30:193
3168299547,16cyclictest12582-21/usr/sbin/munin08:45:163
190332540,1sleep00-21swapper/008:55:270
3168299537,10cyclictest0-21swapper/311:55:243
139391530,1ptp4l391rcuc/309:10:163
31682994810,8cyclictest29357-21appstreamcli11:35:003
31680994717,4cyclictest25-21ksoftirqd/108:40:191
31680994717,2cyclictest25-21ksoftirqd/109:27:401
3168099467,7cyclictest25-21ksoftirqd/110:43:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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