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2025-03-19 - 20:27
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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 Wed Mar 19, 2025 12:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
262959912696,19cyclictest26-21ksoftirqd/108:30:191
262959912491,19cyclictest26-21ksoftirqd/109:20:141
262959912190,18cyclictest26-21ksoftirqd/108:25:151
262959912089,20cyclictest26-21ksoftirqd/112:00:121
262959911791,15cyclictest26-21ksoftirqd/108:00:141
262959911791,15cyclictest26-21ksoftirqd/108:00:141
262959911686,17cyclictest26-21ksoftirqd/108:55:181
262909911511,91cyclictest0-21swapper/007:35:130
262959911487,17cyclictest26-21ksoftirqd/107:55:141
262959911486,18cyclictest26-21ksoftirqd/110:50:201
262959911081,19cyclictest26-21ksoftirqd/112:30:151
262909911018,79cyclictest0-21swapper/011:30:080
262909911014,85cyclictest0-21swapper/011:55:130
262959910978,20cyclictest26-21ksoftirqd/109:40:151
262909910911,83cyclictest0-21swapper/007:45:110
262959910880,18cyclictest26-21ksoftirqd/109:35:131
262909910859,36cyclictest14-21ksoftirqd/009:00:120
262909910814,81cyclictest0-21swapper/009:20:130
262909910811,30cyclictest0-21swapper/007:55:120
262959910779,19cyclictest26-21ksoftirqd/110:40:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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