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2026-07-10 - 23:06
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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 Fri Jul 10, 2026 12:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
273420099790,78cyclictest0-21swapper/409:55:164
273420299770,75cyclictest0-21swapper/612:35:116
2734199996628,19cyclictest2760264-21fw_packets07:55:153
2734199996626,39cyclictest0-21swapper/308:41:463
2734199996143,18cyclictest511ktimers/312:24:223
273419999600,59cyclictest2824219-21ntp_states09:50:223
2734199995920,19cyclictest0-21swapper/312:31:213
2734199995817,39cyclictest2833839-21kworker/u32:3+flush-8:010:47:303
273419999580,39cyclictest2840141-21cut10:20:143
2734199995737,19cyclictest1086-21runrttasks11:41:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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