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2025-12-10 - 11:25
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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 10, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34908272228169,46sleep30-21swapper/319:09:413
34886022228171,19sleep00-21swapper/019:05:360
34907452224168,45sleep50-21swapper/519:08:305
34905872218166,41sleep20-21swapper/219:06:182
34885972212179,21sleep40-21swapper/419:05:324
34886182211175,22sleep70-21swapper/719:05:517
34908252210176,21sleep10-21swapper/119:09:391
34906022210177,21sleep60-21swapper/619:06:316
349104299320,28cyclictest0-21swapper/021:55:000
3491054993128,2cyclictest3617411-21cron23:00:004
3491050993128,2cyclictest3820478-21systemd-journal23:40:003
3491050993128,2cyclictest3820478-21systemd-journal23:40:003
3491050993128,2cyclictest3574039-21dump-pmu-power21:40:003
349105099310,30cyclictest3664103-21sh00:25:003
349105099310,30cyclictest3590474-21idleruntime-cro22:10:003
3491042993127,3cyclictest3519335-21sh20:00:000
3491042993127,1cyclictest0-21swapper/019:25:540
3491066993027,2cyclictest3574034-21latency_hist21:40:007
349106699300,29cyclictest0-21swapper/720:40:557
349106399300,1cyclictest3574048-21munin-run21:40:006
3491059993027,2cyclictest3585077-21idleruntime-cro22:00:005
349105999300,29cyclictest3499712-21idleruntime-cro19:25:005
349105499300,29cyclictest3820478-21systemd-journal20:05:004
349105499300,29cyclictest0-21swapper/400:10:004
349104999300,29cyclictest0-21swapper/220:20:542
3491042993028,1cyclictest3587785-21idleruntime-cro22:05:000
349104299300,2cyclictest3557339-21idleruntime-cro21:10:000
3491066992927,1cyclictest3530125-21sh20:20:007
3491066992927,1cyclictest0-21swapper/720:10:007
349106699290,28cyclictest0-21swapper/723:20:557
349106699290,28cyclictest0-21swapper/722:40:547
349106399290,28cyclictest0-21swapper/621:05:556
349106399290,28cyclictest0-21swapper/620:20:546
349105999290,28cyclictest3541665-21http20:40:555
349105999290,28cyclictest0-21swapper/520:35:535
3491054992927,1cyclictest0-21swapper/420:25:574
349105499290,28cyclictest0-21swapper/423:45:544
349105499290,28cyclictest0-21swapper/421:20:004
349105099290,28cyclictest0-21swapper/320:40:553
3491049992927,1cyclictest0-21swapper/222:00:552
349104999290,29cyclictest0-21swapper/221:05:552
349104999290,28cyclictest0-21swapper/223:05:552
349104999290,28cyclictest0-21swapper/219:50:552
349104999290,1cyclictest0-21swapper/221:40:002
3491045992927,1cyclictest3590951-21apt-get22:10:541
3491045992927,1cyclictest3569133-21apt-get21:30:541
349104599290,28cyclictest0-21swapper/123:25:551
349104599290,28cyclictest0-21swapper/122:45:531
349104599290,28cyclictest0-21swapper/119:45:541
349104599290,28cyclictest0-21swapper/119:30:541
349104599290,28cyclictest0-21swapper/119:25:541
3491042992927,1cyclictest3541661-21apt-get20:40:550
3491042992927,0cyclictest0-21swapper/023:15:540
349104299290,28cyclictest0-21swapper/022:10:540
349104299290,28cyclictest0-21swapper/021:10:560
349104299290,28cyclictest0-21swapper/020:15:580
349104299290,27cyclictest0-21swapper/021:55:550
349104299290,1cyclictest3620158-21awk23:05:000
349104299290,1cyclictest3607135-21apt-get22:40:540
349104299290,0cyclictest0-21swapper/000:10:550
3491066992826,1cyclictest3639022-21sh23:40:007
3491066992826,1cyclictest3639022-21sh23:40:007
349106699280,0cyclictest0-21swapper/700:25:567
3491063992828,0cyclictest0-21swapper/620:00:576
3491063992827,1cyclictest0-21swapper/623:50:546
3491063992827,1cyclictest0-21swapper/623:05:556
3491063992827,1cyclictest0-21swapper/621:10:556
3491063992827,1cyclictest0-21swapper/619:50:546
3491063992826,1cyclictest3511011-21turbostat.cron19:45:006
3491063992826,1cyclictest0-21swapper/621:50:556
3491059992826,1cyclictest0-21swapper/500:10:555
349105999280,27cyclictest0-21swapper/500:35:555
349105999280,27cyclictest0-21swapper/500:35:005
349105999280,27cyclictest0-21swapper/500:05:585
349105999280,0cyclictest0-21swapper/523:20:565
3491054992827,1cyclictest0-21swapper/423:40:554
3491054992826,1cyclictest0-21swapper/422:05:554
3491050992827,1cyclictest0-21swapper/319:30:003
3491050992827,1cyclictest0-21swapper/319:10:543
3491050992827,1cyclictest0-21swapper/319:10:543
3491050992825,2cyclictest3620123-21apt23:05:003
349105099280,0cyclictest0-21swapper/319:40:003
3491049992828,0cyclictest0-21swapper/223:55:572
3491049992827,1cyclictest0-21swapper/221:50:552
3491049992826,2cyclictest3511010-21dump-pmu-power19:45:002
3491045992827,1cyclictest0-21swapper/122:00:551
3491045992827,1cyclictest0-21swapper/121:55:551
349104599280,0cyclictest0-21swapper/100:05:591
349104299280,0cyclictest0-21swapper/023:55:570
3491066992727,0cyclictest0-21swapper/723:45:547
3491066992727,0cyclictest0-21swapper/721:55:557
3491066992725,1cyclictest0-21swapper/720:25:567
3491066992724,2cyclictest3508043-21latency_hist19:40:007
349106699270,0cyclictest0-21swapper/721:10:567
3491063992727,0cyclictest0-21swapper/623:45:546
3491063992727,0cyclictest0-21swapper/621:25:586
3491063992727,0cyclictest0-21swapper/619:45:546
3491059992727,0cyclictest0-21swapper/523:40:555
3491059992727,0cyclictest0-21swapper/523:15:555
3491054992727,0cyclictest0-21swapper/421:55:554
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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