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2026-08-30 - 04:10
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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 10 highest latencies:
System rackcslot4.osadl.org (updated Sun Aug 30, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37634202277215,48sleep00-21swapper/019:05:060
37648532259193,50sleep10-21swapper/119:06:241
376531599150145,3cyclictest3858547-21kworker/u8:122:14:120
376532999114104,8cyclictest3859780-21fwupd22:14:121
136599560,6rtkit-daemon0-21swapper/119:41:201
136599540,6rtkit-daemon3809944-21df_inode21:00:161
376531599532,10cyclictest3929751-21apt-get23:55:140
136599510,4rtkit-daemon1364-21rtkit-daemon20:11:391
38142592490,4sleep13813706-21/usr/sbin/munin21:10:191
136599480,11rtkit-daemon0-21swapper/022:36:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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