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2025-12-10 - 04:36
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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 Dec 10, 2025 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
307539912648,14cyclictest30740-21cyclictest22:28:420
307539912648,14cyclictest30740-21cyclictest22:28:420
29445212212,71sleep229501-21fschecks_time19:03:412
307539912046,13cyclictest0-21swapper/023:23:500
307539912046,13cyclictest0-21swapper/023:23:500
307539911748,13cyclictest1277-21timerandwakeup19:13:500
307539911748,13cyclictest1277-21timerandwakeup19:13:500
307539911650,14cyclictest207-21systemd-journal22:50:260
307539910850,13cyclictest6181-21sh21:08:450
307539910644,12cyclictest30251-21sh23:38:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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