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2026-08-12 - 20:44
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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 Wed Aug 12, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12037832261186,60sleep00-21swapper/007:06:350
12039642255186,53sleep10-21swapper/107:08:311
120422599115109,4cyclictest1185545-21kworker/u8:108:19:321
120422199109100,7cyclictest1233520-21fwupd08:19:310
12569362690,4sleep10-21swapper/109:14:451
120422599633,40cyclictest1363502-21appstreamcli11:43:291
120422599602,39cyclictest1342968-21apt-get11:15:121
120422599600,33cyclictest1378678-21apt-get12:05:171
120422599583,25cyclictest0-21swapper/111:55:001
120422599581,38cyclictest1307472-21apt-get10:25:071
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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