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2026-03-22 - 23:44
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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 rack8slot4.osadl.org (updated Sun Mar 22, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12946582226170,19sleep50-21swapper/507:06:105
12946172226169,18sleep20-21swapper/207:05:352
12968572225191,22sleep10-21swapper/107:09:521
12968482218189,18sleep30-21swapper/307:09:463
12968302214184,19sleep40-21swapper/407:09:314
12946782211177,22sleep70-21swapper/707:06:277
12946302210181,18sleep60-21swapper/607:05:466
12946442207180,17sleep00-21swapper/007:05:570
129710199350,30cyclictest1-21systemd08:45:015
129710199330,28cyclictest0-21swapper/510:13:015
1297104993231,1cyclictest1349104-21sh08:45:016
129710199310,28cyclictest0-21swapper/507:58:035
1297098993126,4cyclictest0-21swapper/407:58:034
129709899310,30cyclictest0-21swapper/411:38:024
129709899310,0cyclictest0-21swapper/409:53:014
1297095993128,2cyclictest1330254-21apt08:10:023
129709599310,29cyclictest1468712-21systemd-run12:25:023
129709599310,1cyclictest0-21swapper/307:45:013
1297093993127,3cyclictest1384386-21idleruntime-cro09:50:001
129708799310,30cyclictest1352058-21sh08:50:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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