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2025-12-05 - 02:36
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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 100 highest latencies:
System rack8slot4.osadl.org (updated Thu Dec 04, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18319322244175,23sleep70-21swapper/707:05:217
18319202244174,21sleep40-21swapper/407:05:104
18341972222168,18sleep20-21swapper/207:09:582
18319392221167,17sleep50-21swapper/507:05:275
18339992220190,19sleep10-21swapper/107:07:081
18340192215188,17sleep30-21swapper/307:07:263
18339422215161,18sleep00-21swapper/007:06:180
18339842214181,21sleep60-21swapper/607:06:576
183440999350,34cyclictest0-21swapper/611:35:556
183440999340,33cyclictest1870278-21apt08:15:006
183440599339,24cyclictest0-21swapper/509:13:115
183440599330,32cyclictest1870277-21debian-sa108:15:005
183440599330,32cyclictest0-21swapper/511:35:555
183440599330,32cyclictest0-21swapper/509:20:005
183440599330,32cyclictest0-21swapper/509:20:005
1834396993330,2cyclictest0-21swapper/311:35:553
1834409993227,4cyclictest1862180-21cron08:00:006
183440999320,31cyclictest0-21swapper/607:25:566
1834405993227,4cyclictest0-21swapper/509:40:545
183439699322,29cyclictest0-21swapper/309:20:003
183439699322,29cyclictest0-21swapper/309:20:003
183438999320,31cyclictest3820478-21systemd-journal11:15:010
183441299310,1cyclictest3820478-21systemd-journal07:20:007
1834405993127,3cyclictest1930155-21dump-pmu-power10:05:005
183439699311,2cyclictest0-21swapper/309:20:013
183439699311,2cyclictest0-21swapper/309:20:013
1834412993028,1cyclictest0-21swapper/707:25:007
183441299300,30cyclictest2011792-21munin-run12:35:007
183441299300,1cyclictest0-21swapper/709:30:577
183440999300,29cyclictest0-21swapper/610:50:556
1834405993028,1cyclictest0-21swapper/508:05:565
1834405993026,3cyclictest1862184-21sh08:00:005
183440599300,29cyclictest0-21swapper/507:25:565
183440099300,2cyclictest1846022-21munin-run07:30:004
1834396993028,2cyclictest0-21swapper/307:25:563
1834396993028,1cyclictest1881060-21idleruntime-cro08:35:003
183439699301,28cyclictest1952458-21http10:45:553
183439699300,29cyclictest0-21swapper/309:30:573
1834394993027,2cyclictest1989698-21turbostat.cron11:55:002
1834391993028,1cyclictest2012523-21apt-get12:35:561
1834391993026,3cyclictest1951973-21debian-sa110:45:011
183439199300,29cyclictest2011781-21debian-sa112:35:001
1834389993028,1cyclictest1955142-21apt-get10:50:550
1834412992927,1cyclictest1951977-21dump-pmu-power10:45:017
1834412992927,1cyclictest0-21swapper/710:55:577
183441299290,28cyclictest0-21swapper/709:15:557
183441299290,28cyclictest0-21swapper/709:15:557
183441299290,28cyclictest0-21swapper/708:00:547
1834409992927,1cyclictest1930153-21idleruntime-cro10:05:006
1834409992927,1cyclictest0-21swapper/609:55:006
1834409992926,3cyclictest0-21swapper/609:40:546
1834409992925,4cyclictest0-21swapper/608:50:566
183440999290,28cyclictest2000738-21apt-get12:15:016
183440999290,28cyclictest0-21swapper/609:25:566
183440999290,28cyclictest0-21swapper/609:25:566
1834405992927,1cyclictest0-21swapper/507:40:575
1834405992925,4cyclictest0-21swapper/508:50:565
1834405992924,4cyclictest0-21swapper/510:10:555
183440599290,28cyclictest0-21swapper/511:30:565
183440599290,28cyclictest0-21swapper/511:25:565
183440599290,28cyclictest0-21swapper/510:50:555
1834400992927,1cyclictest2001480-21http12:15:554
1834400992927,1cyclictest1965918-21apt-get11:10:554
1834400992927,1cyclictest1897715-21apt-get09:05:564
1834400992927,1cyclictest0-21swapper/411:05:564
183440099290,28cyclictest1849184-21apt-get07:35:544
183440099290,28cyclictest0-21swapper/411:20:584
183440099290,28cyclictest0-21swapper/408:55:574
1834396992927,1cyclictest0-21swapper/309:25:563
1834396992927,1cyclictest0-21swapper/309:25:563
1834396992926,2cyclictest1930156-21apt10:05:003
1834396992925,3cyclictest1862187-21sh08:00:003
183439699290,28cyclictest0-21swapper/311:30:563
183439499290,28cyclictest0-21swapper/211:10:562
183439499290,28cyclictest0-21swapper/211:10:012
183439499290,28cyclictest0-21swapper/208:30:552
1834391992927,2cyclictest1899928-21dump-pmu-power09:10:001
183439199290,28cyclictest1987015-21munin-run11:50:001
183439199290,28cyclictest0-21swapper/112:00:551
183439199290,28cyclictest0-21swapper/109:20:551
183439199290,28cyclictest0-21swapper/109:20:551
183439199290,28cyclictest0-21swapper/108:40:571
183439199290,1cyclictest1840347-21cron07:20:001
1834389992927,1cyclictest0-21swapper/007:30:550
183438999290,28cyclictest0-21swapper/012:20:550
183438999290,28cyclictest0-21swapper/011:25:550
183438999290,28cyclictest0-21swapper/010:35:570
183438999290,1cyclictest0-21swapper/011:55:000
1834412992827,1cyclictest0-21swapper/708:50:567
1834412992826,1cyclictest1859510-21munin-run07:55:007
1834409992828,0cyclictest0-21swapper/608:05:566
1834409992826,1cyclictest0-21swapper/610:40:546
1834409992825,3cyclictest0-21swapper/608:15:556
1834409992825,0cyclictest0-21swapper/612:00:556
1834405992827,1cyclictest0-21swapper/507:35:545
1834405992825,2cyclictest0-21swapper/508:15:555
183440599280,27cyclictest0-21swapper/509:25:565
183440599280,27cyclictest0-21swapper/509:25:565
1834400992827,1cyclictest0-21swapper/411:00:564
183440099280,27cyclictest0-21swapper/411:45:564
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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