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2026-09-03 - 07:43
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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 rackcslot8.osadl.org (updated Thu Sep 03, 2026 00:48:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912990,291ptp4l0-21swapper/119:09:221
25669917828,146cyclictest0-21swapper/1220:30:114
25669917828,145cyclictest0-21swapper/1200:00:144
25669917728,93cyclictest0-21swapper/1221:46:514
25669917728,93cyclictest0-21swapper/1221:46:514
25669917423,124cyclictest0-21swapper/1223:40:524
25669917128,92cyclictest0-21swapper/1200:10:234
25669916923,107cyclictest0-21swapper/1200:05:024
25669916628,85cyclictest0-21swapper/1222:50:134
26519916133,36cyclictest0-21swapper/2320:40:1216
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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