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2026-06-26 - 09:25
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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 rackfslot7.osadl.org (updated Fri Jun 26, 2026 00:46:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1535116997214,39cyclictest1543416-21taskset19:24:314
1535116997012,39cyclictest1671418-21latency_hist23:15:024
1535116996830,38cyclictest0-21swapper/420:30:114
1535116996828,39cyclictest0-21swapper/400:36:554
153511699679,19cyclictest0-21swapper/423:26:054
1535116996526,39cyclictest1699219-21apt00:05:134
1535115996325,38cyclictest0-21swapper/319:20:173
1535116996121,39cyclictest0-21swapper/419:50:374
1535116995919,19cyclictest875-21mta-sts-daemon22:14:494
1535116995820,38cyclictest0-21swapper/421:00:274
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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