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2026-05-15 - 13:54
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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 May 15, 2026 00:46:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
145903399421421,0cyclictest99250irq/154-snd_hda_intel:card120:49:4016
145903399421421,0cyclictest1513050-21kworker/u40:6+events_unbound22:02:5316
145904399410409,1cyclictest1461820-21kworker/u40:5+events_unbound19:29:5319
145904399408407,1cyclictest1505215-21kworker/u40:7+events_unbound21:31:1219
145901199374371,3cyclictest1741491-21Renderer19:37:060
145902399357357,0cyclictest1405619-21kworker/u40:1+events_unbound19:33:4313
145902399357356,1cyclictest1542604-21kworker/u40:0+events_unbound20:49:4113
145902399357356,1cyclictest1513050-21kworker/u40:6+events_unbound21:01:2213
145902399357356,1cyclictest1476058-21kworker/u40:15+events_unbound20:27:4213
145902399357356,1cyclictest1420080-21kworker/u40:13+events_unbound19:40:3013
145901199339338,1cyclictest137450irq/125-eno122:23:330
145902699338337,1cyclictest1458344-21kworker/u40:0+events_unbound19:23:3114
145901199333333,0cyclictest137450irq/125-eno119:20:300
145901199329328,1cyclictest1505215-21kworker/u40:7+events_unbound21:51:310
145901199323323,0cyclictest12350irq/9-acpi19:29:530
145901199319319,0cyclictest137450irq/125-eno122:02:530
145901199319318,1cyclictest137450irq/125-eno120:20:180
145903699318317,1cyclictest1488530-21kworker/u40:9+events_unbound20:07:1217
145901199318317,1cyclictest1315548-21kworker/0:2+pm21:01:220
145901199317316,1cyclictest1315548-21kworker/0:2+pm20:27:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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