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2025-11-27 - 05:45
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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 Thu Nov 27, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19395152239181,20sleep50-21swapper/519:07:545
19373912231178,16sleep00-21swapper/019:05:160
19394782222190,19sleep60-21swapper/619:07:236
19393952222171,40sleep20-21swapper/219:06:142
19393752212182,19sleep40-21swapper/419:06:084
19396282211151,19sleep70-21swapper/719:09:337
19395852211178,20sleep10-21swapper/119:08:541
19394252211184,17sleep30-21swapper/319:06:393
193988199534,25cyclictest0-21swapper/722:43:067
1939871993528,6cyclictest2050221-21cron22:40:014
193987199330,1cyclictest0-21swapper/400:05:004
1939871993227,4cyclictest0-21swapper/420:55:544
193987199320,31cyclictest2025988-21sh21:55:004
193988199310,30cyclictest3820478-21systemd-journal23:15:007
1939871993127,3cyclictest2031420-21awk22:05:014
193987199310,30cyclictest2034074-21sh22:10:014
1939861993128,2cyclictest2042161-21sh22:25:012
1939861993127,3cyclictest1973023-21apt20:10:002
193988199300,29cyclictest0-21swapper/719:55:007
193988199300,28cyclictest0-21swapper/720:50:557
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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