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2026-09-22 - 12:08
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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 rackfslot7.osadl.org (updated Tue Sep 22, 2026 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
193821399667,19cyclictest0-21swapper/622:15:176
1938208996527,19cyclictest0-21swapper/100:10:181
1938211996023,18cyclictest362-21jbd2/sda2-822:30:204
1938208995718,38cyclictest331ktimers/123:45:151
1938211995618,38cyclictest2015416-21sed21:30:024
1938213995511,19cyclictest0-21swapper/619:35:176
1938211995537,18cyclictest601ktimers/423:10:004
1938209995435,19cyclictest0-21swapper/200:25:172
1938213995334,19cyclictest781ktimers/623:45:166
1938213995214,19cyclictest0-21swapper/622:35:166
1938212995214,19cyclictest0-21swapper/522:05:155
1938212995214,19cyclictest0-21swapper/520:10:155
1938211995233,19cyclictest0-21swapper/422:53:274
1938211995233,19cyclictest0-21swapper/421:00:084
1938211995233,0cyclictest0-21swapper/422:58:004
1938209995214,19cyclictest0-21swapper/222:30:192
1938213995111,39cyclictest0-21swapper/623:15:166
1938211995133,18cyclictest0-21swapper/423:35:434
1938211995133,18cyclictest0-21swapper/421:39:404
1938211995133,18cyclictest0-21swapper/421:30:074
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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