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2026-04-10 - 05:26
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Fri Apr 10, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139189911685,20cyclictest14-21ksoftirqd/021:45:230
139189911685,20cyclictest14-21ksoftirqd/021:45:230
2096221140,6chrt20935-21apache200:00:030
139209911312,79cyclictest0-21swapper/100:30:151
139209911262,31cyclictest26-21ksoftirqd/121:05:111
139209911215,78cyclictest0-21swapper/123:30:111
139209911211,22cyclictest0-21swapper/122:50:141
139209911113,78cyclictest0-21swapper/121:25:121
139209911112,81cyclictest0-21swapper/121:20:241
139189911078,19cyclictest14-21ksoftirqd/020:05:120
139209910912,78cyclictest0-21swapper/121:50:231
139209910911,76cyclictest0-21swapper/119:25:111
139209910910,78cyclictest0-21swapper/122:00:131
139189910982,15cyclictest14-21ksoftirqd/021:10:170
13920991086,34cyclictest562-21runrttasks19:20:221
139209910811,77cyclictest0-21swapper/123:40:151
139209910711,76cyclictest0-21swapper/121:15:131
139209910711,75cyclictest0-21swapper/122:10:131
139209910656,31cyclictest26-21ksoftirqd/122:55:101
139209910611,74cyclictest0-21swapper/123:05:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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