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2026-03-07 - 16:04
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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 Fri Mar 06, 2026 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4034832232175,19sleep60-21swapper/607:06:366
4035162231176,18sleep30-21swapper/307:07:043
4033932228170,18sleep40-21swapper/407:05:224
4034732225199,17sleep70-21swapper/707:06:297
4035272224170,43sleep50-21swapper/507:07:165
4055452218192,16sleep20-21swapper/207:08:242
4056302215186,19sleep10-21swapper/107:09:361
4056292207178,19sleep00-21swapper/007:09:360
40586699320,31cyclictest550720-21sh11:35:010
405877993128,2cyclictest542647-21apt11:20:014
405890993027,2cyclictest441975-21sh08:15:017
405886993028,1cyclictest0-21swapper/608:38:066
40588699300,29cyclictest0-21swapper/610:20:026
40588699300,29cyclictest0-21swapper/608:00:016
40588199300,29cyclictest550724-21latency_hist11:35:015
40588199300,28cyclictest434550-21apt-get08:03:045
405875993026,3cyclictest471855-21sh09:10:023
405872993027,2cyclictest550725-21idleruntime-cro11:35:002
40587299300,29cyclictest529177-21idleruntime-cro10:55:012
405870993024,5cyclictest510331-21idleruntime-cro10:20:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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