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2026-05-26 - 07:55
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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 rackfslot7.osadl.org (updated Tue May 26, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1024797998888,0cyclictest0-21swapper/720:43:277
102479799877,79cyclictest1067655-21ntpq20:25:237
1024797998647,39cyclictest0-21swapper/720:32:057
1024797998545,39cyclictest0-21swapper/720:45:107
1024791998584,0cyclictest0-21swapper/120:25:011
1024797997618,39cyclictest1198432-21df00:25:157
1024797997372,0cyclictest0-21swapper/720:57:217
1024797997334,39cyclictest1116980-21python321:55:257
1024797997315,39cyclictest1155181-21grep23:05:197
1024797997314,59cyclictest1080625-21kworker/u32:4+events_unbound21:35:277
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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