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2025-11-05 - 20:32
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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 Nov 05, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11411542238172,21sleep40-21swapper/407:08:584
11410762226170,18sleep50-21swapper/507:07:545
11410622225169,44sleep20-21swapper/207:07:432
11411472224170,17sleep60-21swapper/607:08:526
11411332218188,19sleep30-21swapper/307:08:413
11409952212185,17sleep70-21swapper/707:06:447
11409862207155,40sleep00-21swapper/007:06:370
11389672205157,15sleep10-21swapper/107:05:251
1141441994723,24cyclictest0-21swapper/508:41:445
114144699330,28cyclictest0-21swapper/611:25:586
1141441993329,3cyclictest671rcuc/508:35:005
114142699330,28cyclictest0-21swapper/109:31:021
1141446993226,5cyclictest1245202-21apt10:20:006
1141437993227,4cyclictest3820478-21systemd-journal10:20:004
114143299321,30cyclictest3820478-21systemd-journal11:15:003
114142899321,3cyclictest1275103-21sh11:15:002
114142699320,28cyclictest0-21swapper/110:20:591
114144699310,30cyclictest3820478-21systemd-journal10:55:006
114144699310,30cyclictest3820478-21systemd-journal10:55:006
1141441993130,1cyclictest69-21ksoftirqd/508:06:025
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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