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2026-06-29 - 16:08
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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 rackcslot6.osadl.org (updated Mon Jun 29, 2026 12:46:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
248778723760,4sleep121-21ksoftirqd/107:05:291
248862299358357,1cyclictest0-21swapper/708:50:017
248862299357356,1cyclictest0-21swapper/709:35:017
248862299357355,1cyclictest0-21swapper/707:38:017
248862299357355,1cyclictest0-21swapper/707:38:017
248862299354353,1cyclictest0-21swapper/708:30:027
248862299354353,1cyclictest0-21swapper/707:29:017
248862299354352,1cyclictest2479434-21kworker/7:109:01:017
248862299353352,1cyclictest0-21swapper/709:26:017
248862299353352,1cyclictest0-21swapper/709:06:017
248862299353352,1cyclictest0-21swapper/707:51:027
248862299353351,1cyclictest0-21swapper/712:25:027
248862299353351,1cyclictest0-21swapper/708:47:017
248862299353351,1cyclictest0-21swapper/707:33:017
248862299351350,1cyclictest0-21swapper/709:14:017
248862299351350,1cyclictest0-21swapper/707:59:027
248862299351349,1cyclictest2479434-21kworker/7:110:02:027
248862299350349,1cyclictest0-21swapper/711:55:017
248862299350349,1cyclictest0-21swapper/711:55:017
248862299348346,1cyclictest2479434-21kworker/7:110:19:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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