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2026-06-22 - 20:48
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Mon Jun 22, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2046199923,63cyclictest5612-21apt-get12:30:110
20467998820,59cyclictest0-21swapper/111:40:111
326962870,6sleep00-21swapper/007:40:210
20467998715,57cyclictest0-21swapper/109:45:121
2046199865,55cyclictest0-21swapper/007:55:200
20461998635,46cyclictest30840-31find07:35:430
20467998522,55cyclictest243-21systemd-journal07:22:361
20467998517,59cyclictest0-21swapper/112:00:111
20467998511,60cyclictest1654-21chrt07:45:151
20467998511,60cyclictest1654-21chrt07:45:141
2046799846,65cyclictest17141-21apt-get10:00:141
2046799846,65cyclictest17141-21apt-get10:00:141
2046799843,75cyclictest457-21dbus-daemon07:35:191
20467998416,55cyclictest0-21swapper/111:20:091
2046199845,47cyclictest0-21swapper/008:00:310
2046799838,61cyclictest4043-21apt-get12:25:221
2046799838,61cyclictest4043-21apt-get12:25:221
2046799838,58cyclictest15377-21apt-get09:55:091
2046799836,23cyclictest14825-21apt-get11:25:121
20467998312,59cyclictest0-21swapper/111:05:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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