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2026-04-29 - 02:56
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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: performance
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rack0slot0.osadl.org (updated Wed Apr 29, 2026 00:45:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
242521490,4sleep42044299cyclictest22:41:184
2666921450,2sleep62045699cyclictest22:47:456
2355021210,0sleep50-21swapper/523:53:575
306182940,1sleep00-21swapper/022:44:350
311352930,1sleep11-21systemd22:13:511
130672840,1sleep20-21swapper/200:13:502
216802830,0sleep40-21swapper/421:46:054
19832820,1sleep778-21ksoftirqd/723:54:317
132632810,1sleep30-21swapper/322:18:013
49382800,1sleep70-21swapper/721:21:227
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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