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2026-09-04 - 00:35
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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
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rack0slot0.osadl.org (updated Thu Sep 03, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1517921680,1sleep70-21swapper/707:05:177
839421140,4sleep21643399cyclictest11:52:462
839421140,4sleep21643399cyclictest11:52:452
1385621110,0sleep40-21swapper/409:30:154
3095321030,0sleep20-21swapper/209:40:152
112942830,0sleep30-21swapper/309:25:493
297772820,0sleep30-21swapper/310:39:453
124532780,0sleep20-21swapper/210:33:362
177752760,1sleep70-21swapper/709:42:367
109562760,0sleep40-21swapper/410:01:324
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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