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2026-05-28 - 10:27
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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 rack1slot8.osadl.org (updated Thu May 28, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
209799918571768,51cyclictest9899-21ssh21:25:580
2097999503422,52cyclictest0-21swapper/019:10:520
205572471449,15sleep00-21swapper/019:06:070
192952463443,14sleep10-21swapper/119:05:081
2098099425347,48cyclictest0-21swapper/119:10:511
2098099331295,21cyclictest0-21swapper/121:25:581
2286991130,4rtkit-daemon2285-21rtkit-daemon20:06:421
2286991100,4rtkit-daemon2285-21rtkit-daemon23:44:261
2286991100,4rtkit-daemon2285-21rtkit-daemon21:41:181
2286991100,4rtkit-daemon2285-21rtkit-daemon20:12:211
209799911090,15cyclictest0-21swapper/022:45:590
2286991090,4rtkit-daemon2285-21rtkit-daemon20:49:581
2286991090,4rtkit-daemon2285-21rtkit-daemon19:39:371
2286991080,4rtkit-daemon2285-21rtkit-daemon20:21:311
2286991080,4rtkit-daemon2285-21rtkit-daemon00:17:421
2286991070,4rtkit-daemon2285-21rtkit-daemon20:41:421
2286991060,4rtkit-daemon2285-21rtkit-daemon23:37:111
2286991060,4rtkit-daemon2285-21rtkit-daemon00:22:221
2286991050,4rtkit-daemon2285-21rtkit-daemon22:44:141
2286991050,4rtkit-daemon2285-21rtkit-daemon22:07:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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