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2026-05-31 - 01:36
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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 10 highest latencies:
System rackcslot4.osadl.org (updated Sat May 30, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
281146923350,10sleep0161rcuc/007:05:260
28120832270186,28sleep10-21swapper/107:06:291
298510621470,6sleep10-21swapper/111:55:201
179699760,3rtkit-daemon1795-21rtkit-daemon11:07:150
281253399662,43cyclictest2973034-21apt-get11:40:110
281253399643,42cyclictest2881157-21apt-get09:35:150
281253399642,41cyclictest2929019-21apt-get10:40:140
179699630,7rtkit-daemon2822596-21taskset07:32:380
179699630,4rtkit-daemon1795-21rtkit-daemon09:49:570
281253399621,40cyclictest2839544-21apt-get08:15:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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