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2026-07-01 - 17:44
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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 Wed Jul 01, 2026 12:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1139548999235,38cyclictest1086-21runrttasks10:13:373
1139548997820,39cyclictest1227213-21unixbench_singl09:45:233
1139548997617,39cyclictest1263755-21taskset10:53:303
1139548997214,39cyclictest511ktimers/308:17:093
1139548997214,39cyclictest0-21swapper/311:01:473
1139548997213,39cyclictest1289366-21expr11:40:123
1139546997270,2cyclictest321rcuc/108:50:021
1139548997030,19cyclictest1157623-21ntpq07:40:213
1139550996831,18cyclictest0-21swapper/511:40:155
1139552996665,1cyclictest0-21swapper/708:40:177
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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