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2025-12-19 - 19:15
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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 rackeslot6.osadl.org (updated Fri Dec 19, 2025 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3064392999384,6cyclictest3067457-21latency_hist07:20:010
3064395999283,7cyclictest3070651-21latency_hist07:30:001
3064395998982,5cyclictest3122637-21kworker/u8:0+events_unbound10:20:241
3064395998879,7cyclictest3133554-21latency_hist10:45:011
3064395998175,4cyclictest3122637-21kworker/u8:0+events_unbound10:50:231
3064395998066,5cyclictest3085776-21kworker/u8:3+events_unbound09:15:231
3064395997974,4cyclictest3107856-21kworker/u8:3+flush-179:010:05:241
3064395997874,3cyclictest3159265-21kworker/u8:0+events_unbound12:05:261
3064395997871,5cyclictest3125553-21kworker/u8:1+flush-179:010:20:011
3064395997671,4cyclictest3067522-21kworker/u8:2+flush-179:007:40:281
3064392997569,4cyclictest3165916-21kworker/u8:1+events_unbound12:35:250
3064392997567,5cyclictest3085776-21kworker/u8:3+events_unbound08:20:000
3064395997466,6cyclictest3143766-21kworker/u8:1+events_unbound11:45:001
3064395997456,4cyclictest3136770-21kworker/u8:2+flush-179:011:15:011
3064392997465,7cyclictest3093491-21latency_hist08:40:010
3064395997165,4cyclictest3080784-21kworker/u8:3+events_unbound08:00:241
3064395997163,6cyclictest3131936-21kworker/u8:1+flush-179:010:40:001
3064395996963,4cyclictest3107810-21kworker/u8:1+flush-179:009:25:001
3064395996760,5cyclictest3165916-21kworker/u8:1+flush-179:012:40:001
3064395996760,5cyclictest3143766-21kworker/u8:1+events_unbound11:35:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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