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2026-08-10 - 04:14
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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 50 highest latencies:
System rack3slot6.osadl.org (updated Mon Aug 10, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
178529911380,23cyclictest26-21ksoftirqd/100:05:171
377921100,5chrt3782-21sed20:00:020
17852991074,40cyclictest26-21ksoftirqd/123:30:131
17852991069,83cyclictest0-21swapper/100:25:151
178529910658,35cyclictest26-21ksoftirqd/121:15:151
178499910412,78cyclictest0-21swapper/021:00:120
178499910212,76cyclictest0-21swapper/022:30:110
178499910113,77cyclictest0-21swapper/023:25:120
178499910111,28cyclictest0-21swapper/021:50:130
178529910054,31cyclictest26-21ksoftirqd/121:10:171
178529910042,43cyclictest26-21ksoftirqd/119:50:141
17852999849,29cyclictest26-21ksoftirqd/120:35:151
17852999811,63cyclictest0-21swapper/100:15:251
17849999712,72cyclictest0-21swapper/000:20:110
1785299966,60cyclictest20295-21runrttasks23:50:121
17852999631,47cyclictest26-21ksoftirqd/123:00:131
1609429660,25sleep10-21swapper/119:05:081
17852999548,29cyclictest26-21ksoftirqd/121:35:121
17852999512,29cyclictest0-21swapper/120:55:161
17852999510,64cyclictest0-21swapper/120:30:141
17849999512,29cyclictest0-21swapper/019:15:140
1785299949,63cyclictest0-21swapper/121:45:121
17852999413,26cyclictest0-21swapper/123:45:121
17852999412,59cyclictest0-21swapper/122:20:121
17849999413,70cyclictest0-21swapper/020:45:120
17849999412,25cyclictest0-21swapper/020:40:150
17849999411,26cyclictest0-21swapper/022:00:160
1754929420,27sleep00-21swapper/019:08:480
17852999311,60cyclictest0-21swapper/122:45:121
17849999212,27cyclictest0-21swapper/022:50:110
17852999113,60cyclictest0-21swapper/122:15:121
17852999112,58cyclictest0-21swapper/121:40:151
17852999034,34cyclictest26-21ksoftirqd/122:05:151
1784999898,32cyclictest28284-21diskmemload21:10:160
17849998942,15cyclictest457-21dbus-daemon00:00:000
17852998811,57cyclictest0-21swapper/100:20:121
17852998612,55cyclictest0-21swapper/120:45:151
17852998534,33cyclictest26-21ksoftirqd/119:45:131
17852998515,52cyclictest0-21swapper/122:40:121
17849998539,11cyclictest0-21swapper/021:45:010
1784999853,44cyclictest31272-21munin-run00:20:000
1784999853,43cyclictest31052-21taskset19:45:160
17852998436,30cyclictest0-21swapper/120:50:111
17852998411,53cyclictest0-21swapper/122:10:141
17852998411,51cyclictest0-21swapper/119:35:151
1784999843,23cyclictest3581-21cstates21:30:210
1784999843,23cyclictest3581-21cstates21:30:210
17849998426,19cyclictest243-21systemd-journal20:52:330
17849998419,31cyclictest24164-21aten2.4-expect19:25:280
17852998311,52cyclictest0-21swapper/100:30:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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