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2026-08-05 - 08:03
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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 rack1slot3.osadl.org (updated Wed Aug 05, 2026 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1791395991313,0cyclictest0-21swapper/322:58:233
1791395991313,0cyclictest0-21swapper/322:25:373
1791395991313,0cyclictest0-21swapper/321:27:133
1791395991313,0cyclictest0-21swapper/321:22:073
1791395991313,0cyclictest0-21swapper/320:58:343
1791395991313,0cyclictest0-21swapper/320:20:403
1791395991313,0cyclictest0-21swapper/320:18:383
1791395991313,0cyclictest0-21swapper/319:56:053
1791395991313,0cyclictest0-21swapper/319:36:393
1791395991313,0cyclictest0-21swapper/300:19:173
1791395991312,0cyclictest0-21swapper/323:58:473
1791395991312,0cyclictest0-21swapper/323:34:123
1791395991312,0cyclictest0-21swapper/322:35:503
1791395991312,0cyclictest0-21swapper/319:32:333
1791395991310,1cyclictest0-21swapper/322:00:153
1791395991212,0cyclictest0-21swapper/323:48:323
1791395991212,0cyclictest0-21swapper/323:14:463
1791395991212,0cyclictest0-21swapper/322:53:153
1791395991212,0cyclictest0-21swapper/322:24:343
1791395991212,0cyclictest0-21swapper/322:12:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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