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2026-04-15 - 03:07

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 Wed Apr 15, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4907712257192,51sleep20-21swapper/219:07:522
4907712257192,51sleep20-21swapper/219:07:522
4907492241177,52sleep70-21swapper/719:07:337
4907492241177,52sleep70-21swapper/719:07:337
4906232237171,21sleep50-21swapper/519:05:465
4906232237171,21sleep50-21swapper/519:05:455
4906902233167,21sleep40-21swapper/419:06:414
4906902233167,21sleep40-21swapper/419:06:414
4907692218184,22sleep00-21swapper/019:07:500
4907692218184,22sleep00-21swapper/019:07:500
4906332209178,20sleep60-21swapper/619:05:556
4906332209178,20sleep60-21swapper/619:05:546
4906302209175,22sleep30-21swapper/319:05:523
4906302209175,22sleep30-21swapper/319:05:523
4907992206172,22sleep10-21swapper/119:08:151
4907992206172,22sleep10-21swapper/119:08:151
491139992522,3cyclictest0-21swapper/020:50:010
49113999250,24cyclictest0-21swapper/023:35:110
49116399247,0cyclictest0-21swapper/700:38:177
49116399240,2cyclictest653348-21awk23:50:007
49116399240,2cyclictest555421-21awk21:00:007
491157992421,2cyclictest645188-21apt-get23:35:115
49115799240,23cyclictest508881-21cron19:40:015
491152992422,1cyclictest670548-21sendmail-msp00:20:003
49115299240,23cyclictest572785-21idleruntime-cro21:30:003
49115299240,22cyclictest0-21swapper/320:40:013
49115299240,1cyclictest503178-21latency_hist19:30:013
49114499240,23cyclictest0-21swapper/121:20:011
491139992421,2cyclictest662-21systemd-logind00:00:000
491139992421,2cyclictest662-21systemd-logind00:00:000
49113999240,23cyclictest16-21ksoftirqd/000:35:100
49113999240,23cyclictest0-21swapper/020:35:120
49116399230,22cyclictest0-21swapper/723:40:117
49116399230,1cyclictest0-21swapper/723:19:597
491159992323,0cyclictest0-21swapper/623:25:126
49115999230,22cyclictest598915-21apt-get22:15:126
49115999230,22cyclictest0-21swapper/620:30:026
491157992321,1cyclictest673803-21apt-get00:25:135
49115799230,22cyclictest0-21swapper/522:05:125
49115499230,1cyclictest630383-21apt-get23:10:124
491152992321,1cyclictest0-21swapper/323:05:123
49115299230,2cyclictest0-21swapper/322:40:003
49115299230,22cyclictest641646-21apt-get23:30:003
49115299230,22cyclictest0-21swapper/319:45:133
491148992323,0cyclictest0-21swapper/200:30:132
49114899230,23cyclictest561103-21awk21:10:002
49114899230,22cyclictest0-21swapper/222:45:132
49114899230,22cyclictest0-21swapper/220:00:112
49114499230,22cyclictest679078-21dump-pmu-power00:35:001
49114499230,22cyclictest0-21swapper/121:55:001
49114499230,22cyclictest0-21swapper/121:30:001
49114499230,1cyclictest0-21swapper/120:50:011
491139992321,1cyclictest0-21swapper/023:20:000
491139992320,2cyclictest0-21swapper/023:00:120
491139992319,4cyclictest0-21swapper/023:50:100
49113999230,22cyclictest0-21swapper/022:50:000
49113999230,22cyclictest0-21swapper/019:50:110
49113999230,22cyclictest0-21swapper/019:45:120
49113999230,22cyclictest0-21swapper/000:30:130
49113999230,1cyclictest0-21swapper/022:55:110
491163992222,0cyclictest0-21swapper/721:25:127
491163992221,0cyclictest0-21swapper/720:30:117
49116399220,21cyclictest0-21swapper/722:10:097
49116399220,21cyclictest0-21swapper/719:45:127
49116399220,1cyclictest0-21swapper/722:05:007
49116399220,0cyclictest0-21swapper/720:10:127
491159992221,1cyclictest612821-21munin-run22:39:596
491159992221,1cyclictest0-21swapper/622:05:116
491159992220,1cyclictest633236-21apt-get23:15:146
49115999220,22cyclictest0-21swapper/623:30:016
49115999220,22cyclictest0-21swapper/620:10:016
49115999220,21cyclictest0-21swapper/623:10:126
49115999220,21cyclictest0-21swapper/622:50:126
49115999220,21cyclictest0-21swapper/621:25:126
49115999220,21cyclictest0-21swapper/620:10:116
49115999220,21cyclictest0-21swapper/600:05:146
49115999220,21cyclictest0-21swapper/600:05:146
49115999220,1cyclictest0-21swapper/600:35:006
491157992219,2cyclictest497454-21sh19:20:015
491157992219,2cyclictest497454-21sh19:20:015
49115799220,21cyclictest0-21swapper/522:40:115
49115799220,21cyclictest0-21swapper/521:05:145
49115799220,1cyclictest664802-21munin-run00:10:005
49115799220,1cyclictest664802-21munin-run00:09:595
491154992221,1cyclictest603998-21fwupd22:22:064
491154992221,1cyclictest558674-21apt-get21:05:134
491154992221,1cyclictest550098-21apt-get20:50:134
491154992221,1cyclictest0-21swapper/420:50:004
491154992221,1cyclictest0-21swapper/419:30:114
491154992220,1cyclictest642339-21apt-get23:30:114
49115499220,21cyclictest0-21swapper/419:45:134
49115499220,1cyclictest639221-21apt-get23:25:124
49115499220,1cyclictest532709-21apt-get20:20:114
49115499220,1cyclictest0-21swapper/423:35:114
49115499220,1cyclictest0-21swapper/419:30:014
491152992221,0cyclictest0-21swapper/319:40:023
491152992220,1cyclictest0-21swapper/323:05:003
49115299220,21cyclictest0-21swapper/323:15:143
49115299220,21cyclictest0-21swapper/322:55:123
49115299220,21cyclictest0-21swapper/321:15:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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