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2025-12-19 - 14:08
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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
Characteristics of the 20 highest latencies:
System rackdslot0.osadl.org (updated Fri Dec 19, 2025 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
655799240,6cyclictest32644-21fschecks_time21:50:151
655899230,22cyclictest843-21systemd-network22:45:222
6556992320,2cyclictest15620-21fschecks_count22:15:150
655699230,5cyclictest0-21swapper/019:18:520
6557992214,7cyclictest843-21systemd-network22:24:461
655699220,4cyclictest0-21swapper/019:50:000
6558992111,6cyclictest22126-21nfsd419:35:192
655899210,3cyclictest0-21swapper/223:30:222
655799210,16cyclictest0-21swapper/123:50:141
655699211,19cyclictest0-21swapper/022:25:010
655799202,15cyclictest0-21swapper/120:47:361
655799202,15cyclictest0-21swapper/120:47:351
6556992017,2cyclictest8502-21cron00:00:010
655899192,3cyclictest0-21swapper/220:02:202
655899192,15cyclictest0-21swapper/223:44:272
655899190,16cyclictest3976-21H222:10:212
655799193,15cyclictest21-21ksoftirqd/121:19:271
655799192,16cyclictest0-21swapper/119:26:541
6557991915,3cyclictest0-21swapper/122:53:581
655799191,15cyclictest0-21swapper/122:57:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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