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2026-03-15 - 04:14
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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 rackeslot3.osadl.org (updated Sun Mar 15, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2095887997140,29cyclictest2144809-21kworker/1:121:30:131
2095887996840,27cyclictest2641011-1kworker/1:2H19:22:191
2095887996840,27cyclictest2259350-21kworker/1:023:50:141
2095887996839,28cyclictest2641011-1kworker/1:2H20:10:061
2095887996637,28cyclictest2122592-21kworker/1:120:40:141
209588799661,63cyclictest0-21swapper/120:06:511
2095887996532,31cyclictest2128766-21kworker/1:220:55:161
209588799652,2cyclictest0-21swapper/121:46:021
209588799640,63cyclictest0-21swapper/123:42:421
209588799640,63cyclictest0-21swapper/120:27:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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