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2025-12-14 - 15:41
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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 10 highest latencies:
System rackaslot8.osadl.org (updated Sun Dec 14, 2025 12:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
145432280226,17sleep20-21swapper/207:08:172
145702273247,17sleep10-21swapper/107:08:361
146252266237,19sleep00-21swapper/007:09:190
146282261230,20sleep30-21swapper/307:09:213
285362540,0sleep00-21swapper/011:15:150
132782190,0sleep10-21swapper/109:30:001
186762150,0sleep30-21swapper/312:05:153
22903290,3sleep334-21ksoftirqd/311:00:203
147999984,3cyclictest275-21systemd-journal09:05:012
147959987,1cyclictest22-21ksoftirqd/111:54:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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