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2026-06-29 - 22:28
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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 rackeslot5.osadl.org (updated Mon Jun 29, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1772699349,25cyclictest0-21swapper/208:41:032
1772699300,1cyclictest621-21dbus-daemon10:05:002
1771899300,29cyclictest621-21dbus-daemon11:50:010
1773099290,28cyclictest29582-21apt-get12:10:113
1773099290,28cyclictest20054-21apt-get10:40:133
1773099290,1cyclictest22634-21apt-get07:20:133
1772199290,28cyclictest0-21swapper/108:15:121
1772199290,1cyclictest29902-21apt-get07:35:131
1772199290,1cyclictest27008-21munin-run12:05:011
1771899290,28cyclictest27924-21apt-get08:40:090
1771899290,1cyclictest18866-21apt09:30:000
17730992827,1cyclictest24950-21apt-get07:25:103
17730992826,1cyclictest10703-21awk11:30:013
1773099280,27cyclictest28458-21apt-get09:50:123
1773099280,0cyclictest27580-21apt-get07:30:143
1772699280,0cyclictest0-21swapper/207:55:122
17721992827,1cyclictest691-21apt-get10:00:121
1772199280,0cyclictest13280-21apt-get11:35:131
17718992828,0cyclictest0-21swapper/010:10:110
17718992827,1cyclictest646-21polkitd08:25:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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