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2025-12-23 - 09:53
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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 Tue Dec 23, 2025 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31044962232176,18sleep70-21swapper/719:05:067
31067692229170,47sleep60-21swapper/619:09:556
31045212229171,19sleep50-21swapper/519:05:295
31067372227170,44sleep10-21swapper/119:09:261
31067382214179,22sleep20-21swapper/219:09:272
31046982210183,17sleep40-21swapper/419:08:014
31067262209182,17sleep00-21swapper/019:09:160
31041522207177,19sleep30-21swapper/319:05:033
310701899360,35cyclictest3109567-21sh19:15:006
310700599360,35cyclictest3126467-21systemd-run19:45:022
310700599350,34cyclictest3161718-21awk20:50:022
310701899340,33cyclictest3126429-21ls19:45:016
310701899340,33cyclictest0-21swapper/620:50:016
310701899330,32cyclictest0-21swapper/621:03:176
310700599330,32cyclictest0-21swapper/219:15:012
310700599320,31cyclictest0-21swapper/223:13:172
310700599320,31cyclictest0-21swapper/219:53:142
310700599320,31cyclictest0-21swapper/219:53:142
310700599320,30cyclictest0-21swapper/220:13:162
310701899310,30cyclictest0-21swapper/623:13:166
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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