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2026-04-15 - 23:24
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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 Wed Apr 15, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1210982228171,17sleep40-21swapper/407:09:344
1190472227172,18sleep30-21swapper/307:07:563
1210112226170,18sleep00-21swapper/007:08:170
1188932223168,19sleep70-21swapper/707:05:427
1190442220167,17sleep10-21swapper/107:07:531
1190182213183,19sleep20-21swapper/207:07:312
1189652209162,15sleep50-21swapper/507:06:465
1210172208179,18sleep60-21swapper/607:08:246
12135899349,24cyclictest0-21swapper/210:44:172
12137399328,24cyclictest0-21swapper/710:44:197
121348993230,1cyclictest144113-21apt-get07:52:590
12136899311,29cyclictest225375-21systemctl10:20:015
12136699310,30cyclictest206216-21debian-sa109:45:004
12135899310,30cyclictest225314-21apt10:20:002
121373993028,1cyclictest127936-21apt-get07:22:587
121373993028,1cyclictest127936-21apt-get07:22:587
121373993028,1cyclictest0-21swapper/709:40:017
12137399300,29cyclictest681-21dbus-daemon09:25:017
12137399300,29cyclictest0-21swapper/711:05:017
121371993026,3cyclictest209522-21date09:50:016
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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