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2025-12-05 - 12:32
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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 rack0slot7.osadl.org (updated Fri Dec 05, 2025 00:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
163552299408407,1cyclictest305921-21kworker/3:0+pm19:20:389
163555299350349,0cyclictest0-21swapper/1223:59:134
163555299348345,2cyclictest1353108-21kworker/u64:0+events_unbound19:55:114
163551699325322,2cyclictest2634875-21kworker/u64:7+events_unbound23:59:121
163555599305305,0cyclictest0-21swapper/1321:12:445
163555599305304,1cyclictest0-21swapper/1320:49:415
163554699304304,0cyclictest0-21swapper/1023:25:232
163554699304303,1cyclictest0-21swapper/1020:00:212
163554699303303,0cyclictest0-21swapper/1023:36:552
163554699303303,0cyclictest0-21swapper/1023:08:122
163554699303303,0cyclictest0-21swapper/1023:08:112
163554699303303,0cyclictest0-21swapper/1022:26:112
163554699303303,0cyclictest0-21swapper/1021:45:592
163554699303303,0cyclictest0-21swapper/1020:49:172
163554699303303,0cyclictest0-21swapper/1000:07:372
1635512992910,290cyclictest0-21swapper/021:22:550
1635512992910,290cyclictest0-21swapper/021:22:550
163553899290282,5cyclictest390842-21Renderer22:33:0014
163553899289283,5cyclictest390842-21Renderer21:22:5614
163553899289283,5cyclictest390842-21Renderer21:22:5614
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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