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2025-11-23 - 02:42
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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 Nov 23, 2025 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10557142244185,17sleep00-21swapper/019:07:370
10556372233167,21sleep70-21swapper/719:06:317
10531972223192,19sleep50-21swapper/519:05:015
10558402221191,19sleep30-21swapper/319:09:253
10558122221191,19sleep20-21swapper/219:08:592
10557582217188,18sleep40-21swapper/419:08:134
10557802215187,18sleep60-21swapper/619:08:316
10557262208176,20sleep10-21swapper/119:07:461
1056102996820,24cyclictest0-21swapper/421:19:574
105609199370,31cyclictest1157941-21sh22:15:000
105610099350,34cyclictest1157942-21sh22:15:003
105610099340,2cyclictest1067704-21munin-run19:30:003
105609799340,33cyclictest1141795-21latency_hist21:45:002
1056091993431,2cyclictest1127994-21fwupd21:19:570
105609199340,33cyclictest0-21swapper/023:40:000
1056100993327,5cyclictest1203999-21sh23:40:003
105609799330,28cyclictest0-21swapper/220:55:572
1056091993325,3cyclictest1079471-21apt-get19:50:570
1056112993226,5cyclictest1157940-21sh22:15:007
105610099320,31cyclictest1171915-21apt-get22:40:563
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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