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2026-05-13 - 18:26
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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 rack7slot0.osadl.org (updated Wed May 13, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
120650590,0irq/26-eth1-rx-0-21swapper/307:09:553
120650590,0irq/26-eth1-rx-0-21swapper/107:09:001
112750560,0irq/25-eth00-21swapper/207:09:592
112750440,0irq/25-eth00-21swapper/007:05:130
11932991712,0cyclictest0-21swapper/210:02:442
11933991514,0cyclictest0-21swapper/312:34:453
1193399150,0cyclictest0-21swapper/311:55:193
11932991512,0cyclictest0-21swapper/211:29:102
11932991511,0cyclictest0-21swapper/209:36:572
1193299150,0cyclictest0-21swapper/211:45:332
1193299150,0cyclictest0-21swapper/211:35:132
1193299150,0cyclictest0-21swapper/208:55:202
11933991411,0cyclictest0-21swapper/310:44:173
11932991413,0cyclictest0-21swapper/211:42:312
11931991413,0cyclictest25812-21cp11:09:331
1193199140,0cyclictest0-21swapper/109:28:221
11930991413,0cyclictest0-21swapper/009:05:100
1193099140,0cyclictest0-21swapper/010:17:040
11933991312,0cyclictest0-21swapper/311:25:313
11933991312,0cyclictest0-21swapper/309:25:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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