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2026-09-11 - 10:12
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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 Fri Sep 11, 2026 00:46:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2117038991910,0cyclictest0-21swapper/723:15:107
2117036999796,1cyclictest0-21swapper/521:10:145
2117035999717,79cyclictest2210626-21munin-run22:00:024
211703399919,23cyclictest0-21swapper/221:40:162
2117035997415,58cyclictest2256702-21taskset23:20:574
2117035997335,19cyclictest2244307-21df23:00:134
2117035997132,39cyclictest0-21swapper/420:08:024
2117035997113,39cyclictest236199-21snmpd23:26:494
2117035997032,38cyclictest2147268-21latency_hist20:05:034
2117035996526,19cyclictest0-21swapper/421:51:214
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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