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2026-05-09 - 08:54
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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 May 09, 2026 00:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23016422230166,19sleep40-21swapper/419:05:494
23018772226165,19sleep50-21swapper/519:09:125
23017352214186,19sleep20-21swapper/219:07:082
23018482213185,19sleep30-21swapper/319:08:453
23019162210182,18sleep60-21swapper/619:09:466
23018432208179,19sleep70-21swapper/719:08:427
23016212207178,20sleep10-21swapper/119:05:301
23016382206176,20sleep00-21swapper/019:05:450
2302158993328,4cyclictest2475934-21latency_hist00:20:026
230215499320,31cyclictest2391955-21awk21:50:015
230215099320,31cyclictest2406190-21wc22:15:013
2302147993227,4cyclictest2380785-21cron21:30:012
230214499320,31cyclictest2419846-21cron22:40:011
230214199320,31cyclictest2366852-21cron21:05:000
230215499310,2cyclictest374-21systemd-journal23:05:015
2302144993126,4cyclictest2405901-21apt-get22:15:001
230216399300,29cyclictest2470159-21cron00:10:017
230216399300,29cyclictest0-21swapper/723:35:027
230216399300,29cyclictest0-21swapper/720:50:147
230215899300,29cyclictest2339287-21latency_hist20:15:026
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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