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2025-10-17 - 18:56
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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: ondemand
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rack5slot4.osadl.org (updated Fri Oct 17, 2025 12:44:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
294592114104,7sleep10-21swapper/107:08:031
293942110100,7sleep30-21swapper/307:07:113
29266210999,7sleep20-21swapper/207:05:312
29458210798,6sleep00-21swapper/007:08:020
163402690,0sleep20-21swapper/209:30:152
63232610,1sleep30-21swapper/309:24:483
259572600,0sleep30-21swapper/309:35:133
15662590,0sleep20-21swapper/207:35:212
179492580,2sleep3391ktimersoftd/311:45:193
156262560,0sleep30-21swapper/312:01:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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