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2025-12-04 - 02:33
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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 Wed Dec 03, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26491742230169,20sleep40-21swapper/407:06:354
26471432224168,44sleep20-21swapper/207:05:122
26492022222190,20sleep50-21swapper/507:07:005
26493252221163,20sleep70-21swapper/707:08:477
26471742216186,19sleep60-21swapper/607:05:406
26471892213180,21sleep30-21swapper/307:05:533
26492912211160,16sleep00-21swapper/007:08:150
26492072207178,18sleep10-21swapper/107:07:041
2649630994118,0cyclictest0-21swapper/611:20:056
264963099310,3cyclictest2729136-21latency_hist09:35:006
264962199310,30cyclictest2674717-21idleruntime-cro07:55:004
264961799310,30cyclictest0-21swapper/310:30:013
2649615993129,1cyclictest0-21swapper/209:25:552
2649610993127,3cyclictest2815877-21sh12:15:000
264961099310,30cyclictest2726449-21apt09:30:000
264963599300,29cyclictest0-21swapper/709:45:557
264963599300,29cyclictest0-21swapper/709:00:557
264963099300,1cyclictest2698955-21cron08:40:006
264962699300,29cyclictest2785971-21idleruntime-cro11:20:005
264962699300,29cyclictest2710756-21apt-get09:00:565
264962699300,29cyclictest2682804-21dump-pmu-power08:10:005
2649621993028,1cyclictest2783281-21idleruntime-cro11:15:004
264961799300,29cyclictest2718351-21idleruntime-cro09:15:003
264961799300,29cyclictest2707363-21systemd-run08:55:003
2649615993028,1cyclictest2723748-21sh09:25:002
264961599300,29cyclictest0-21swapper/210:45:552
264961099300,2cyclictest2737221-21turbostat.cron09:50:000
264961099300,29cyclictest2663715-21unin-run07:35:000
264963599290,28cyclictest2762210-21apt-get10:35:567
264963599290,28cyclictest2669820-21apt-get07:45:557
264963599290,28cyclictest0-21swapper/708:00:587
264963599290,1cyclictest2753457-21apt-config10:20:017
2649630992928,1cyclictest2721040-21sh09:20:006
2649630992927,1cyclictest2721543-21apt-get09:20:556
264963099290,1cyclictest2829347-21sh12:40:006
264963099290,1cyclictest2785974-21dump-pmu-power11:20:006
264963099290,1cyclictest0-21swapper/608:50:556
2649626992927,1cyclictest0-21swapper/510:20:545
2649626992927,1cyclictest0-21swapper/508:55:015
2649626992925,3cyclictest0-21swapper/509:20:005
264962699290,28cyclictest0-21swapper/509:25:555
264962699290,1cyclictest2698956-21cron08:40:005
264962199290,28cyclictest0-21swapper/408:45:554
264962199290,28cyclictest0-21swapper/408:45:554
2649617992928,1cyclictest0-21swapper/312:25:573
2649617992928,1cyclictest0-21swapper/311:10:543
2649617992927,1cyclictest0-21swapper/312:30:553
2649617992927,1cyclictest0-21swapper/309:50:553
264961799290,28cyclictest0-21swapper/311:45:563
264961799290,28cyclictest0-21swapper/308:20:573
2649615992927,1cyclictest2658275-21latency_hist07:25:002
2649615992927,1cyclictest0-21swapper/208:35:002
264961599290,28cyclictest2808302-21apt-get12:00:552
264961599290,28cyclictest2767122-21idleruntime-cro10:45:002
264961599290,28cyclictest0-21swapper/211:25:552
264961599290,28cyclictest0-21swapper/211:20:572
264961599290,28cyclictest0-21swapper/209:30:562
264961599290,1cyclictest401rcuc/209:20:002
264961599290,1cyclictest2664398-21apt-get07:35:582
2649612992927,1cyclictest0-21swapper/112:35:001
264961299290,28cyclictest0-21swapper/109:25:551
264961299290,28cyclictest0-21swapper/107:55:551
264961299290,1cyclictest2715655-21idleruntime-cro09:10:001
2649610992925,3cyclictest2715649-21sh09:10:000
264961099290,28cyclictest0-21swapper/012:20:550
264961099290,1cyclictest2791397-21munin-run11:30:000
2649635992827,1cyclictest2810995-21apt-get12:06:007
2649630992827,1cyclictest2680591-21apt-get08:05:556
264963099280,28cyclictest2808302-21apt-get12:00:546
264963099280,28cyclictest0-21swapper/609:25:556
264963099280,28cyclictest0-21swapper/609:00:566
2649626992827,0cyclictest0-21swapper/512:25:575
264962699280,28cyclictest0-21swapper/508:45:555
264962699280,28cyclictest0-21swapper/508:45:555
264962199280,27cyclictest0-21swapper/407:15:574
2649617992827,1cyclictest0-21swapper/311:50:543
2649617992824,3cyclictest2764415-21apt10:40:013
264961799280,28cyclictest0-21swapper/308:45:553
264961799280,28cyclictest0-21swapper/308:45:553
2649615992827,1cyclictest411ktimers/208:55:512
2649615992826,1cyclictest0-21swapper/212:25:562
264961599280,28cyclictest0-21swapper/210:10:552
2649612992827,1cyclictest2699456-21apt-get08:40:541
2649612992827,1cyclictest2699456-21apt-get08:40:541
2649612992827,1cyclictest0-21swapper/108:00:581
264961299280,28cyclictest0-21swapper/107:15:571
264961299280,1cyclictest2783766-21apt-get11:15:571
264961299280,0cyclictest2696748-21apt-get08:35:551
264961299280,0cyclictest0-21swapper/110:40:561
2649635992727,0cyclictest0-21swapper/712:30:557
2649635992727,0cyclictest0-21swapper/707:40:547
2649635992726,1cyclictest2819078-21apt-get12:20:557
2649635992725,1cyclictest2799474-21apt11:45:007
264963599270,0cyclictest0-21swapper/708:20:577
2649630992727,0cyclictest0-21swapper/612:25:576
2649630992727,0cyclictest0-21swapper/612:20:556
2649630992727,0cyclictest0-21swapper/610:20:546
2649630992727,0cyclictest0-21swapper/608:55:016
2649630992726,1cyclictest0-21swapper/611:00:566
2649626992727,0cyclictest0-21swapper/509:20:555
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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