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2026-06-30 - 12:38
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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 Tue Jun 30, 2026 00:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1566225997537,19cyclictest871-21mta-sts-daemon22:45:205
1566225997517,39cyclictest1604341-21ntpq20:15:185
1566225997415,39cyclictest1644900-21grep21:30:145
1566225997333,39cyclictest1649205-21gmain23:10:245
1566225997134,18cyclictest1582534-21systemd-run19:40:005
1566225997133,38cyclictest0-21swapper/519:40:505
1566225997113,39cyclictest1658241-21taskset21:55:125
1566225997051,19cyclictest691ktimers/523:44:205
1566225997032,38cyclictest0-21swapper/523:55:305
1566225996931,38cyclictest0-21swapper/521:46:365
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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