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2025-06-28 - 22:57
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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 rackeslot5.osadl.org (updated Sat Jun 28, 2025 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25705993229,2cyclictest303-21systemd-journal10:35:011
2570799310,30cyclictest303-21systemd-journal12:00:003
2570799300,29cyclictest570-21cron07:25:013
2570799300,29cyclictest3222-21cron07:30:013
2570799300,29cyclictest24527-21cron09:24:593
25705993028,1cyclictest16888-21cron11:25:011
2570799290,28cyclictest0-21swapper/310:35:153
2570799290,28cyclictest0-21swapper/310:35:153
25706992927,1cyclictest29485-21cron09:35:002
25706992926,2cyclictest26818-21awk11:45:012
2570699290,28cyclictest0-21swapper/207:25:142
2570599290,29cyclictest4054-21apt-get12:05:171
2570599290,28cyclictest2907-21apt-get10:55:141
2570599290,28cyclictest0-21swapper/108:35:171
25704992928,1cyclictest0-21swapper/010:25:170
25704992927,1cyclictest0-21swapper/010:15:000
2570499290,28cyclictest31290-21perf08:30:010
2570499290,28cyclictest0-21swapper/011:25:160
2570799280,28cyclictest0-21swapper/312:15:183
2570799280,28cyclictest0-21swapper/309:35:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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