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2025-07-02 - 18:16
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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 rackbslot1.osadl.org (updated Wed Jul 02, 2025 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18680932221172,40sleep30-21swapper/307:07:493
18680792208185,13sleep00-21swapper/007:07:370
18682352204181,13sleep10-21swapper/107:09:361
18680002202173,19sleep20-21swapper/207:06:402
186846099960,95cyclictest1965660-21chrome08:45:011
1868462996357,4cyclictest2169626-21munin-node12:05:113
1868460995750,5cyclictest2102321-21/usr/share/muni11:00:011
1868460995750,5cyclictest2102321-21/usr/share/muni11:00:011
1868460995350,2cyclictest1804538-21kworker/u8:2+flush-179:007:15:401
1868462995235,5cyclictest76405-21systemd-journal12:15:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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