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2025-04-02 - 08:10
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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 rack8slot4.osadl.org (updated Wed Apr 02, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35989712235180,17sleep50-21swapper/519:07:355
35968792224168,17sleep70-21swapper/719:05:207
35989872222170,41sleep30-21swapper/319:07:493
35989402221189,20sleep10-21swapper/119:07:061
35990012216189,17sleep60-21swapper/619:08:006
35989572216186,19sleep00-21swapper/019:07:210
35969232216185,20sleep40-21swapper/419:05:574
35990242214169,15sleep20-21swapper/219:08:202
3599355997119,24cyclictest0-21swapper/723:33:497
36372712550,0sleep60-21swapper/620:21:356
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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