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2026-05-03 - 08:38
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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 10 highest latencies:
System rackbslot7.osadl.org (updated Sun May 03, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
153839911055,48cyclictest11979-21sh21:35:151
15373991043,77cyclictest15655-21apt-get19:02:520
15373991012,68cyclictest22495-21apt-get22:47:120
1392729926,40sleep10-21swapper/118:57:231
15395999710,68cyclictest0-21swapper/222:47:142
140522979,58sleep014092-21if_eth018:57:260
15395999642,46cyclictest0-21swapper/221:07:012
15395999642,46cyclictest0-21swapper/221:07:012
1539599963,36cyclictest31518-21fschecks_time22:07:212
15373999646,33cyclictest4129-21threads00:02:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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