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2026-09-22 - 14:28
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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
Characteristics of the 10 highest latencies:
System rackdslot0.osadl.org (updated Tue Sep 22, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2553099250,1cyclictest0-21swapper/023:19:070
2553099240,2cyclictest15130-21taskset19:45:430
2553099234,18cyclictest0-21swapper/019:17:190
2553099230,2cyclictest898-21postgres00:07:320
2553099230,2cyclictest29717-21timerandwakeup22:05:220
2553099230,2cyclictest29717-21timerandwakeup22:05:220
2553099230,2cyclictest22365-21ntp_states20:55:200
2553099230,2cyclictest14631-21munin-run20:45:010
2553099230,2cyclictest1114-21lldpd20:05:180
2553499225,6cyclictest0-21swapper/119:42:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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