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2026-05-11 - 23:56
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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 rack3slot6.osadl.org (updated Mon May 11, 2026 12:45:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21952210117,38sleep00-21swapper/007:06:110
22058210028,25sleep10-21swapper/107:07:211
2251199917,74cyclictest10698-21apt-get08:05:120
22511999113,62cyclictest0-21swapper/008:45:130
22511998914,62cyclictest0-21swapper/009:35:220
2251799885,56cyclictest0-21swapper/111:50:211
2251199887,65cyclictest2232-21wc07:40:190
2251199886,74cyclictest25433-21apt-get07:15:130
2251199876,20cyclictest6655-21apt-get09:25:130
22511998625,56cyclictest457-21dbus-daemon11:40:000
22511998616,63cyclictest0-21swapper/011:50:130
22511998611,66cyclictest0-21swapper/007:25:130
2251199854,21cyclictest243-21systemd-journal11:50:000
22511998524,20cyclictest243-21systemd-journal08:42:470
22511998523,57cyclictest243-21systemd-journal12:23:320
2251199843,73cyclictest30833-21head07:30:170
22511998427,52cyclictest472-21polkitd07:35:190
22511998417,60cyclictest0-21swapper/008:30:130
22511998416,61cyclictest0-21swapper/010:15:110
2251199838,58cyclictest1104-21apt-get09:10:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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