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2026-09-22 - 12:19
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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 Tue Sep 22, 2026 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10616362247178,19sleep40-21swapper/419:05:284
10639092226168,18sleep60-21swapper/619:09:086
10639192224167,46sleep70-21swapper/719:09:177
10638902223163,18sleep50-21swapper/519:08:515
10638762216183,21sleep20-21swapper/219:08:392
10637972216157,19sleep10-21swapper/119:07:341
10616262216187,19sleep30-21swapper/319:05:193
10637872206177,19sleep00-21swapper/019:07:250
1064170995251,0cyclictest0-21swapper/119:15:001
1064186994242,0cyclictest0-21swapper/719:15:017
106416699340,1cyclictest1-21systemd20:30:010
1064175993328,4cyclictest1-21systemd19:15:013
106416699330,33cyclictest0-21swapper/000:10:010
106417299320,4cyclictest1070346-21cron19:20:012
106417099320,31cyclictest1229424-21/usr/sbin/munin00:05:021
106416699320,31cyclictest0-21swapper/000:11:260
106416699320,28cyclictest1173633-21unin-run22:25:010
106416699320,28cyclictest0-21swapper/020:01:280
106418699310,30cyclictest1218569-21appstreamcli23:45:057
106417599310,31cyclictest1-21systemd23:15:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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