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2025-11-06 - 05:26
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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 50 highest latencies:
System rack8slot4.osadl.org (updated Thu Nov 06, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27994202224169,18sleep10-21swapper/119:07:271
27995752218188,19sleep70-21swapper/719:09:427
27994522216184,20sleep40-21swapper/419:07:544
27973342214185,18sleep50-21swapper/519:05:225
27993892213180,21sleep60-21swapper/619:07:006
27973402213157,44sleep20-21swapper/219:05:272
27993482212181,20sleep30-21swapper/319:06:243
27994572207175,20sleep00-21swapper/019:07:580
2799789994318,24cyclictest0-21swapper/100:10:241
279980599320,29cyclictest2873400-21munin-run21:25:007
279980399320,31cyclictest0-21swapper/620:55:596
279980399320,28cyclictest0-21swapper/600:16:016
279980599310,30cyclictest2971524-21sh00:25:007
279980399310,30cyclictest2922386-21cron22:55:006
2799794993127,3cyclictest2846160-21sh20:35:013
279979499310,29cyclictest2968837-21munin-run00:20:003
2799787993126,4cyclictest2873421-21basename21:25:000
2799803993028,1cyclictest2972279-21apt-get00:26:006
279980399300,29cyclictest2843475-21idleruntime-cro20:30:016
2799800993027,2cyclictest2830017-21munin-run20:05:005
2799800993027,2cyclictest2827292-21sh20:00:005
279980099300,29cyclictest0-21swapper/519:45:595
279979499300,29cyclictest2925581-21apt-get23:00:593
279979499300,29cyclictest2817025-21apt-get19:40:563
279979499300,29cyclictest0-21swapper/321:35:593
279979499300,29cyclictest0-21swapper/321:35:003
2799789993027,2cyclictest2813838-21dump-pmu-power19:35:001
2799789993026,3cyclictest2821918-21sh19:50:001
279978999300,2cyclictest2849361-21apt-get20:41:021
279978999300,29cyclictest2835385-21turbostat.cron20:15:001
2799787993028,1cyclictest2971529-21cron00:25:000
279978799300,29cyclictest2851566-21latency_hist20:45:010
279978799300,28cyclictest2922875-21apt-get22:56:020
2799805992925,3cyclictest0-21swapper/720:55:597
279980599290,28cyclictest0-21swapper/723:36:017
279980599290,28cyclictest0-21swapper/722:20:007
279980599290,1cyclictest2950395-21apt-get23:45:597
2799803992927,1cyclictest0-21swapper/621:01:006
2799803992926,3cyclictest0-21swapper/600:35:596
2799803992926,2cyclictest2903262-21sh22:20:006
2799803992925,3cyclictest0-21swapper/622:20:566
279980399290,28cyclictest2945000-21apt-get23:36:026
2799800992927,1cyclictest0-21swapper/519:40:005
279980099290,28cyclictest0-21swapper/500:16:015
279979899290,29cyclictest2897880-21sh22:10:004
279979899290,28cyclictest0-21swapper/419:30:584
279979899290,1cyclictest0-21swapper/422:16:024
2799794992927,1cyclictest0-21swapper/323:16:003
2799794992927,1cyclictest0-21swapper/322:56:023
2799794992927,1cyclictest0-21swapper/320:20:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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