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2026-01-11 - 00:50

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #4

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 rack8slot4s.osadl.org (updated Sat Jan 10, 2026 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5827872241175,52sleep50-21swapper/507:09:545
5827562238175,21sleep10-21swapper/107:09:271
5826102230170,19sleep40-21swapper/407:07:204
5799552228190,24sleep20-21swapper/207:05:022
5803582226170,18sleep30-21swapper/307:05:113
5825202216183,21sleep60-21swapper/607:06:026
5827142213174,24sleep70-21swapper/707:08:527
5825592210180,19sleep00-21swapper/007:06:360
6090132530,0sleep60-21swapper/607:50:216
583030992721,5cyclictest698775-21cron10:30:005
58303099260,21cyclictest0-21swapper/508:54:595
583030992518,3cyclictest0-21swapper/511:00:005
583020992521,3cyclictest750453-21cron12:00:013
58301599250,24cyclictest0-21swapper/112:05:001
58303699240,23cyclictest0-21swapper/710:10:127
58303699240,11cyclictest0-21swapper/709:44:227
58303299240,24cyclictest770467-21sh12:35:016
58303099240,23cyclictest0-21swapper/507:55:105
58303099240,0cyclictest0-21swapper/509:20:105
58302699240,23cyclictest681658-21sendmail10:00:004
58302699240,0cyclictest0-21swapper/411:40:124
58302099240,24cyclictest0-21swapper/311:15:053
58302099240,23cyclictest670222-21sendmail09:40:003
58302099240,23cyclictest615396-21munin-run08:04:593
58302099240,23cyclictest0-21swapper/311:35:013
583015992422,1cyclictest664-21in:imuxsock08:20:001
583015992421,2cyclictest764776-21munin-run12:25:011
58303699231,4cyclictest0-21swapper/710:28:177
58303699230,23cyclictest0-21swapper/708:19:597
58303699230,1cyclictest0-21swapper/709:20:007
583032992320,3cyclictest713348-21awk10:54:596
58303299230,22cyclictest0-21swapper/609:15:046
583030992321,2cyclictest0-21swapper/509:35:115
583030992319,3cyclictest725185-21apt-get11:15:125
58303099230,1cyclictest719482-21apt-get11:05:125
58303099230,18cyclictest655940-21fwupd09:15:035
58302699230,1cyclictest773380-21http12:40:014
58302699230,1cyclictest716227-21sendmail-msp11:00:004
583020992321,1cyclictest765196-21apt-get12:25:143
58302099230,2cyclictest597966-21munin-run07:35:013
58302099230,22cyclictest0-21swapper/311:10:123
58302099230,21cyclictest687787-21apt-get10:10:123
58302099230,1cyclictest618408-21readlink08:09:593
583016992321,1cyclictest750484-21perf12:00:002
58301699230,22cyclictest0-21swapper/209:30:132
58301699230,22cyclictest0-21swapper/209:20:102
58301699230,22cyclictest0-21swapper/208:50:112
58301699230,22cyclictest0-21swapper/208:35:112
58301699230,1cyclictest664-21in:imuxsock12:20:012
583015992321,1cyclictest684526-21perf10:04:591
58301599230,22cyclictest753766-21apt-get12:05:111
58301599230,22cyclictest0-21swapper/111:00:011
58301599230,22cyclictest0-21swapper/110:10:001
583011992323,0cyclictest0-21swapper/011:40:120
58301199230,22cyclictest0-21swapper/012:35:120
58301199230,22cyclictest0-21swapper/009:45:120
583036992221,1cyclictest0-21swapper/710:40:007
583036992221,1cyclictest0-21swapper/707:49:597
583036992220,1cyclictest0-21swapper/711:30:017
58303699220,21cyclictest745190-21apt-get11:50:117
58303699220,21cyclictest0-21swapper/708:50:117
58303699220,0cyclictest0-21swapper/707:55:117
583032992222,0cyclictest0-21swapper/610:55:126
583032992220,2cyclictest721914-21munin-run11:10:016
583032992220,1cyclictest610091-21apt-get07:55:116
58303299220,22cyclictest0-21swapper/609:25:136
58303299220,21cyclictest0-21swapper/612:25:146
58303299220,21cyclictest0-21swapper/611:20:116
58303299220,21cyclictest0-21swapper/608:20:116
583030992221,1cyclictest770503-21idleruntime-cro12:35:015
583030992220,1cyclictest753766-21apt-get12:05:115
583030992220,1cyclictest598385-21apt-get07:35:125
58303099220,4cyclictest638909-21cat08:45:005
58303099220,22cyclictest629952-21idleruntime-cro08:30:005
58303099220,22cyclictest0-21swapper/512:20:015
58303099220,21cyclictest0-21swapper/510:45:115
58303099220,21cyclictest0-21swapper/510:45:115
58303099220,21cyclictest0-21swapper/510:20:115
58303099220,21cyclictest0-21swapper/507:45:125
58303099220,21cyclictest0-21swapper/507:15:135
58303099220,1cyclictest621777-21apt-get08:15:115
58303099220,1cyclictest0-21swapper/510:45:005
58303099220,1cyclictest0-21swapper/510:44:595
58303099220,1cyclictest0-21swapper/508:00:135
583026992221,1cyclictest0-21swapper/409:40:104
583026992220,1cyclictest721919-21perf11:10:014
583026992220,1cyclictest615375-21cron08:04:594
583026992220,1cyclictest600841-21munin-run07:40:004
583026992220,1cyclictest0-21swapper/407:25:124
583026992219,2cyclictest747612-21idleruntime-cro11:55:014
58302699220,21cyclictest653466-21apt-get09:10:124
58302699220,21cyclictest0-21swapper/411:15:014
58302699220,21cyclictest0-21swapper/407:55:104
58302099220,21cyclictest0-21swapper/310:55:123
58302099220,21cyclictest0-21swapper/308:10:113
58302099220,1cyclictest0-21swapper/310:35:133
583016992220,1cyclictest707633-21munin-run10:45:002
583016992220,1cyclictest707633-21munin-run10:45:002
583016992218,3cyclictest673082-21sh09:45:002
58301699220,21cyclictest708052-21apt-get10:45:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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