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2026-05-27 - 23:32
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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 rackfslot7.osadl.org (updated Wed May 27, 2026 12:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
57745999820,81cyclictest0-21swapper/307:55:193
577459997435,20cyclictest699646-21ntpq10:50:193
57745999719,60cyclictest598933-21timerwakeupswit07:45:233
577459997113,39cyclictest655768-21ntp_states09:30:193
577459997012,39cyclictest641339-21df09:05:133
577459996830,38cyclictest0-21swapper/308:25:153
577459996628,19cyclictest628219-21sed08:40:173
577459996628,19cyclictest628219-21sed08:40:173
57746399646,39cyclictest0-21swapper/709:05:147
57745999634,39cyclictest648279-21taskset09:16:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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