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2026-08-06 - 10:43
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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 Thu Aug 06, 2026 00:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
120215998584,1cyclictest0-21swapper/121:25:141
120218995839,19cyclictest0-21swapper/421:05:184
120218995617,39cyclictest61-21ksoftirqd/422:05:154
120217995638,18cyclictest781-21mta-sts-daemon23:02:333
120217995618,19cyclictest213565-21munin-run22:00:013
120217995617,38cyclictest140662-21sed19:45:173
120217995617,20cyclictest224163-21taskset22:17:353
120217995517,19cyclictest238847-21cstates22:45:153
120218995315,19cyclictest0-21swapper/423:05:154
120219995214,19cyclictest0-21swapper/522:45:165
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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