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2026-08-17 - 20:29
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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 Mon Aug 17, 2026 12:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2165470991445,19cyclictest0-21swapper/208:05:172
216546899790,78cyclictest2197445-21cat08:05:200
2165468997537,18cyclictest0-21swapper/008:19:280
2165468997235,18cyclictest2185964-21df_inode07:45:150
2165468997234,19cyclictest2285188-21irqstats10:45:170
2165468997113,39cyclictest2304122-21kworker/0:2+ice12:04:320
2165468997113,39cyclictest2264169-21kworker/0:1+ice11:11:110
2165468997113,39cyclictest2173942-21kworker/0:0+ice08:26:560
2165468997012,39cyclictest2173942-21kworker/0:0+ice09:24:310
2165468996931,18cyclictest0-21swapper/010:33:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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