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2026-08-20 - 02:58
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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 rackbslot7.osadl.org (updated Wed Aug 19, 2026 12:44:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10940213013,76sleep011031-21grep07:05:450
115749910835,15cyclictest0-21swapper/111:50:001
115749910835,15cyclictest0-21swapper/111:50:001
1119021086,17sleep20-21swapper/207:07:022
115749910753,47cyclictest351-21runrttasks12:01:271
115749910753,47cyclictest351-21runrttasks12:01:271
115749910318,33cyclictest2808-21diskmemload11:15:221
115749910310,54cyclictest27474-21taskset07:55:461
11574991006,35cyclictest0-21swapper/108:35:271
11574991006,35cyclictest0-21swapper/108:35:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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