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2026-06-03 - 07:55
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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 rack3slot6.osadl.org (updated Wed Jun 03, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
301959911484,19cyclictest14-21ksoftirqd/020:05:170
301959911280,18cyclictest14-21ksoftirqd/021:45:230
301959910576,17cyclictest14-21ksoftirqd/023:40:220
301959910572,23cyclictest14-21ksoftirqd/023:25:120
301959910471,19cyclictest0-21swapper/000:15:170
301959910230,37cyclictest7457-21aten2.4_r3power21:15:180
301959910230,37cyclictest7457-21aten2.4_r3power21:15:180
30195999931,56cyclictest14-21ksoftirqd/020:15:230
30195999864,22cyclictest14-21ksoftirqd/023:10:130
30199999711,28cyclictest0-21swapper/120:40:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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