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2026-04-12 - 12:18
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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 rack8slot4.osadl.org (updated Sun Apr 12, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6734992232180,17sleep50-21swapper/519:08:155
6714882225169,18sleep70-21swapper/719:07:137
6735412220166,43sleep00-21swapper/019:08:510
6735362219161,17sleep40-21swapper/419:08:474
6715252218187,20sleep60-21swapper/619:07:446
6714932217187,20sleep30-21swapper/319:07:173
6715092216187,19sleep10-21swapper/119:07:301
6713622207178,18sleep20-21swapper/219:05:222
7484002630,0sleep10-21swapper/121:27:591
67384399557,24cyclictest0-21swapper/222:08:202
67384399343,30cyclictest0-21swapper/220:15:012
67385599330,2cyclictest766223-21latency_hist22:00:025
673861993129,1cyclictest832679-21apt-get00:03:007
67386199310,3cyclictest799158-21cron23:00:017
67386199310,30cyclictest815587-21apt23:30:017
673858993128,2cyclictest679792-21apt19:20:006
67385899310,30cyclictest834742-21debian-sa100:05:016
67385899310,29cyclictest0-21swapper/623:02:596
67385899310,29cyclictest0-21swapper/622:02:596
67385599310,30cyclictest736644-21awk21:05:025
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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