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2026-08-02 - 03:07
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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 10 highest latencies:
System rack0slot2.osadl.org (updated Sun Aug 02, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
120272925746,8sleep40-21swapper/419:08:144
120264825722,30sleep70-21swapper/719:07:047
1203065994341,2cyclictest1440051-21kworker/u16:1+flush-8:021:09:155
120269224231,8sleep50-21swapper/519:07:435
1203073994136,4cyclictest1488497-21latency_hist21:28:467
13959892390,0sleep71395990-21grep20:44:067
1203065993735,2cyclictest1485649-21kworker/u16:3+flush-8:021:28:585
1203065993634,2cyclictest1884244-21kworker/u16:4+flush-8:000:09:115
1203073993431,2cyclictest125-21kswapd000:07:277
1203065993432,2cyclictest1618382-21kworker/u16:1+events_unbound23:08:595
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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