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2025-12-31 - 16:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 rackeslot5s.osadl.org (updated Wed Dec 31, 2025 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2393799270,21cyclictest24236-21apt-get07:10:481
23937992617,2cyclictest12501-21idleruntime-cro09:00:001
2394099240,23cyclictest1075-21cron07:30:003
2394099240,0cyclictest13752-21apt-get11:15:503
2393899240,23cyclictest31065-21perf10:45:002
2393899240,1cyclictest0-21swapper/207:20:482
2393699240,23cyclictest28690-21cron07:20:000
2393699240,23cyclictest18473-21apt08:05:010
23940992320,3cyclictest13227-21apt-get07:55:023
2394099230,22cyclictest5289-21idleruntime-cro08:45:013
2393899230,22cyclictest759-21apt-get08:35:462
2393899230,22cyclictest12665-21cron12:20:002
2393899230,0cyclictest21759-21apt-get10:25:472
2393799230,22cyclictest20684-21ls11:30:001
2393799230,22cyclictest18480-21latency_hist08:05:011
23936992320,2cyclictest17763-21sh09:10:000
2393699230,22cyclictest3097-21idleruntime-cro12:00:010
2393699230,22cyclictest22591-21latency_hist09:20:010
2393699230,22cyclictest20667-21cron11:30:000
2393699230,22cyclictest16623-21turbostat10:15:010
2394099220,21cyclictest6343-21apt-get07:40:463
2394099220,21cyclictest6031-21latency_hist07:40:013
2394099220,21cyclictest0-21swapper/311:45:473
2394099220,21cyclictest0-21swapper/309:20:493
2394099220,0cyclictest0-21swapper/310:15:493
23938992222,0cyclictest0-21swapper/211:20:492
23938992220,1cyclictest0-21swapper/211:05:022
2393899221,20cyclictest0-21swapper/209:10:002
2393899220,2cyclictest28639-21dump-pmu-power10:40:002
2393899220,21cyclictest31372-21apt-get10:45:492
2393899220,21cyclictest26012-21apt-get08:20:482
2393899220,21cyclictest21015-21apt-get11:30:482
2393899220,21cyclictest0-21swapper/210:15:012
23937992221,0cyclictest0-21swapper/108:45:491
23937992220,1cyclictest22362-21basename12:40:011
23937992220,1cyclictest0-21swapper/110:00:001
2393799220,21cyclictest606-21dbus-daemon11:15:011
2393799220,21cyclictest32521-21apt-get09:40:501
2393799220,21cyclictest30803-21apt-get08:30:491
2393799220,21cyclictest29047-21apt-get07:20:481
2393799220,21cyclictest16225-21apt-get11:20:491
2393799220,21cyclictest0-21swapper/111:05:491
2393799220,21cyclictest0-21swapper/110:30:011
2393799220,21cyclictest0-21swapper/107:55:021
2393799220,1cyclictest0-21swapper/109:40:011
2393799220,1cyclictest0-21swapper/109:35:011
23936992220,1cyclictest0-21swapper/011:25:010
23936992219,2cyclictest5494-21dump-pmu-power12:05:010
23936992219,2cyclictest16067-21tr08:00:010
2393699221,1cyclictest24162-21apt-get10:30:460
2393699220,21cyclictest8744-21apt-get07:45:480
2393699220,21cyclictest8744-21apt-get07:45:480
2393699220,21cyclictest30305-21apt-get11:50:020
2393699220,21cyclictest1101-21perf07:30:000
2393699220,21cyclictest10442-21apt-get08:55:500
2393699220,21cyclictest0-21swapper/011:45:000
2393699220,21cyclictest0-21swapper/008:50:470
2393699220,21cyclictest0-21swapper/008:05:470
23940992121,0cyclictest3423-21apt-get12:00:483
23940992120,1cyclictest16405-21apt-get08:00:483
23940992119,1cyclictest15379-21perf09:05:003
23940992119,1cyclictest0-21swapper/310:30:473
23940992118,3cyclictest0-21swapper/312:15:493
2394099210,20cyclictest7294-21apt-get09:55:493
2394099210,20cyclictest29789-21idleruntime-cro09:35:013
2394099210,1cyclictest28980-21apt-get10:40:513
2394099210,1cyclictest18619-21apt-get11:25:493
2394099210,1cyclictest0-21swapper/312:10:013
23938992120,1cyclictest28229-21apt-get11:45:472
23938992120,1cyclictest11358-21apt-get11:10:502
23938992120,1cyclictest11139-21apt-get07:50:482
23938992120,1cyclictest0-21swapper/211:30:002
23938992119,1cyclictest15160-21perf12:25:002
23938992119,1cyclictest1345-21apt-get10:50:482
23938992119,1cyclictest11797-21wc10:05:002
2393899210,20cyclictest20265-21apt-get12:35:482
2393899210,1cyclictest20491-21apt-get09:15:492
2393899210,0cyclictest0-21swapper/210:15:492
23937992120,1cyclictest0-21swapper/111:00:481
23937992119,2cyclictest3441-21perf10:55:001
23937992119,1cyclictest27405-21basename09:30:011
23937992119,1cyclictest19044-21apt10:20:011
23937992119,1cyclictest10283-21awk12:15:011
2393799210,21cyclictest0-21swapper/110:35:481
2393799210,21cyclictest0-21swapper/109:15:491
2393799210,1cyclictest0-21swapper/111:35:491
2393799210,0cyclictest0-21swapper/107:25:461
23936992121,0cyclictest0-21swapper/008:45:490
23936992121,0cyclictest0-21swapper/008:15:480
23936992121,0cyclictest0-21swapper/007:40:460
2393699210,20cyclictest12104-21apt-get10:05:470
2393699210,1cyclictest20176-21dump-pmu-power09:15:000
2393699210,1cyclictest11358-21apt-get11:10:490
2393699210,0cyclictest0-21swapper/008:25:470
23940992020,0cyclictest0-21swapper/311:55:493
23940992020,0cyclictest0-21swapper/311:50:483
23940992020,0cyclictest0-21swapper/311:10:503
23940992020,0cyclictest0-21swapper/310:10:493
23940992020,0cyclictest0-21swapper/309:45:483
23940992019,1cyclictest30497-21perf08:30:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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