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2025-10-16 - 10:04
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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 Oct 16, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
97002232171,47sleep40-21swapper/419:07:594
97372226169,18sleep50-21swapper/519:08:325
97032220186,21sleep70-21swapper/719:08:027
76152219167,17sleep00-21swapper/019:05:540
75652218166,41sleep60-21swapper/619:05:126
96592214184,19sleep10-21swapper/119:07:241
95852214163,37sleep30-21swapper/319:06:213
76082212179,21sleep20-21swapper/219:05:482
10069993128,2cyclictest62582-21cron20:45:006
1006599310,30cyclictest1-21systemd00:00:014
1006599310,30cyclictest0-21swapper/419:56:184
1006599310,28cyclictest0-21swapper/419:51:044
1005899310,30cyclictest106712-21idleruntime-cro22:10:002
1005899310,30cyclictest106712-21idleruntime-cro22:10:002
1005399312,1cyclictest16-21ksoftirqd/022:20:000
1007499300,29cyclictest18960-21debian-sa119:25:017
1007499300,29cyclictest0-21swapper/721:13:117
10069993028,1cyclictest164609-21apt-get23:56:046
1006999301,28cyclictest158477-21sh23:45:016
1006999300,29cyclictest180326-21sh00:25:006
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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