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2026-06-11 - 12:44
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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 Thu Jun 11, 2026 00:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18739672238169,20sleep50-21swapper/519:05:295
18742512224165,46sleep70-21swapper/719:09:337
18740282220162,47sleep60-21swapper/619:06:186
18740802217187,20sleep20-21swapper/219:07:032
18740322215187,19sleep10-21swapper/119:06:211
18742672210181,19sleep30-21swapper/319:09:453
18740732209180,19sleep40-21swapper/419:06:574
18742642208178,20sleep00-21swapper/019:09:410
187451399353,4cyclictest1-21systemd22:15:007
1874497993432,1cyclictest2020147-21munin-run23:30:001
187451399330,33cyclictest1-21systemd00:20:017
187451399330,29cyclictest2008948-21923:10:017
187451399330,1cyclictest0-21swapper/700:20:067
1874501993327,6cyclictest1-21systemd19:35:003
187449399330,5cyclictest1956029-21systemd-run21:35:010
187450399322,29cyclictest611rcuc/423:25:014
187449899320,31cyclictest1961586-21basename21:45:012
187451399310,30cyclictest2042494-21sh00:10:027
187450999310,29cyclictest856-21dbus-daemon23:10:016
1874503993127,3cyclictest107-21kcompactd000:23:454
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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