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2026-09-16 - 02:56
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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 rack1slot8.osadl.org (updated Wed Sep 16, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
157082941919,15sleep10-21swapper/119:05:511
1615899858768,64cyclictest0-21swapper/123:53:381
1615899855774,49cyclictest0-21swapper/119:12:021
1615799855763,61cyclictest0-21swapper/023:53:390
1615799846766,52cyclictest0-21swapper/019:12:020
159032587564,16sleep00-21swapper/019:07:470
16158995032,7cyclictest13366-21ssh23:41:221
1615799798,56cyclictest4345-21if_err_eth020:05:170
1615799792,62cyclictest468-21sadc22:19:590
1615799759,51cyclictest2433-21ssh23:21:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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