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2025-07-12 - 11:07
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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 Sat Jul 12, 2025 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5843372237184,42sleep40-21swapper/419:08:144
5822282234177,18sleep10-21swapper/119:05:461
5842312230177,18sleep20-21swapper/219:06:442
5822432229174,18sleep70-21swapper/719:06:007
5821952222188,22sleep60-21swapper/619:05:196
5822272220192,18sleep00-21swapper/019:05:450
5822142219166,18sleep50-21swapper/519:05:345
5842232216185,19sleep30-21swapper/319:06:363
58468299310,29cyclictest648963-21apt-get21:06:176
584680993126,4cyclictest0-21swapper/519:35:015
58468099310,30cyclictest667821-21sh21:40:005
58468099310,30cyclictest0-21swapper/520:31:175
584669993128,2cyclictest1202534-21systemd-journal00:00:011
58468699300,29cyclictest0-21swapper/719:41:217
58468299300,29cyclictest0-21swapper/623:36:226
584680993028,2cyclictest0-21swapper/522:56:185
584680993028,1cyclictest752123-21apt-get00:16:195
58468099300,29cyclictest683984-21apt22:10:015
58468099300,29cyclictest0-21swapper/500:26:195
584675993028,1cyclictest624479-21apt-get20:21:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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