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2026-07-03 - 07:16
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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 rackfslot7.osadl.org (updated Fri Jul 03, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
65374199623,0cyclictest0-21swapper/121:00:161
653740995940,1cyclictest823879-21systemd-run00:20:020
653740995535,1cyclictest685439-21pmu-power20:05:210
653744995435,19cyclictest771946-21kworker/u32:5+flush-8:000:39:124
653745995010,39cyclictest0-21swapper/522:00:165
653743995011,39cyclictest0-21swapper/319:50:173
653740995032,0cyclictest0-21swapper/020:15:090
653743994910,39cyclictest0-21swapper/319:35:153
653741994912,18cyclictest0-21swapper/119:40:151
653741994910,39cyclictest0-21swapper/120:55:151
65374599478,39cyclictest0-21swapper/522:05:155
65374499478,39cyclictest0-21swapper/419:10:174
653740994729,0cyclictest0-21swapper/023:17:570
653740994727,1cyclictest0-21swapper/021:09:530
65374599468,19cyclictest0-21swapper/519:45:165
653740994627,0cyclictest0-21swapper/022:31:160
65374199457,19cyclictest0-21swapper/120:15:141
653741994426,0cyclictest0-21swapper/123:45:181
653740994323,20cyclictest753886-21ntpq22:10:190
653745994115,19cyclictest0-21swapper/523:35:165
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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