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2026-07-07 - 14:27
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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 Jul 07, 2026 00:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
929844999315,59cyclictest948529-21irqstats19:45:152
929844999114,58cyclictest1047224-21grep22:45:012
929844998666,0cyclictest1085177-21sed23:50:232
929844997639,18cyclictest421ktimers/200:37:432
929848997354,19cyclictest0-21swapper/622:55:206
929844997052,0cyclictest0-21swapper/220:10:112
929844997031,19cyclictest1101425-21python300:20:212
92984499697,39cyclictest1010486-21tr21:35:252
92984499697,39cyclictest1010486-21tr21:35:252
92984499686,40cyclictest1091175-21sshd00:03:352
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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