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2026-05-09 - 22:34
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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
Characteristics of the 20 highest latencies:
System rackeslot2.osadl.org (updated Sat May 09, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2467621000,2sleep30-21swapper/309:20:243
20520121000,2sleep30-21swapper/311:20:183
2268962720,1sleep0226894-21ssh11:34:040
1881062580,1sleep1188105-21ssh11:06:241
1881062580,1sleep1188105-21ssh11:06:241
4046003993125,2cyclictest134050irq/121-eno112:30:011
2728582310,2sleep30-21swapper/312:04:343
40561962300,1sleep00-21swapper/007:15:210
4045999992817,6cyclictest0-21swapper/011:00:010
4046003992623,2cyclictest1-21systemd09:20:031
4046003992519,2cyclictest134050irq/121-eno110:20:011
4046003992421,2cyclictest318636-21gpgv12:35:011
4046003992421,2cyclictest1290-21dbus-daemon07:15:001
404599999249,7cyclictest0-21swapper/011:35:140
4045999992420,3cyclictest0-21swapper/012:20:000
4045999992417,6cyclictest114181-21uniq10:20:180
4046003992320,2cyclictest0-21swapper/109:35:011
4045999992320,2cyclictest21133-21apt-get09:20:000
4045999992320,2cyclictest151120-21latency_hist10:45:000
4045999992318,3cyclictest0-21swapper/008:30:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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