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2026-01-02 - 04:25

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 Fri Jan 02, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13476062227168,20sleep30-21swapper/319:07:423
13476032218162,44sleep00-21swapper/019:07:380
13476842216185,20sleep50-21swapper/519:08:485
13475242214175,24sleep70-21swapper/719:06:337
13475032214181,21sleep40-21swapper/419:06:144
13453182210179,20sleep60-21swapper/619:05:036
13476812207174,20sleep20-21swapper/219:08:462
13474822203176,17sleep10-21swapper/119:05:551
134798599290,23cyclictest1463671-21cron22:30:000
134800099270,23cyclictest0-21swapper/422:15:144
134800099270,22cyclictest0-21swapper/419:20:014
1348005992624,1cyclictest1409121-21idleruntime-cro20:55:006
134800899250,21cyclictest0-21swapper/721:45:137
134800599250,24cyclictest1463669-21cron22:30:006
134800599250,1cyclictest1455530-21apt-get22:15:136
1348000992523,1cyclictest1363835-21apt-get19:35:134
1347994992522,2cyclictest0-21swapper/223:45:122
1347990992523,1cyclictest1466965-21apt-get22:35:141
1348008992420,3cyclictest0-21swapper/723:55:157
1348008992420,3cyclictest0-21swapper/722:35:147
134800899240,3cyclictest1460847-21awk22:25:007
134800899240,23cyclictest0-21swapper/719:50:017
134800599240,23cyclictest0-21swapper/623:20:146
134800099240,23cyclictest1415537-21apt-get21:05:134
134800099240,23cyclictest1354305-21sh19:20:004
134800099240,23cyclictest1060-21cron22:40:004
1347994992422,1cyclictest0-21swapper/219:40:002
134799499241,2cyclictest0-21swapper/219:25:002
134799499240,23cyclictest0-21swapper/200:35:002
134799099240,2cyclictest363-21systemd-journal23:55:001
1348008992321,1cyclictest0-21swapper/720:50:017
1348008992321,1cyclictest0-21swapper/720:50:007
1348008992321,1cyclictest0-21swapper/719:20:017
1348008992320,3cyclictest0-21swapper/722:10:127
134800899230,22cyclictest0-21swapper/721:35:157
134800899230,0cyclictest0-21swapper/722:25:137
134800599230,22cyclictest363-21systemd-journal21:45:016
134800299230,22cyclictest0-21swapper/520:55:015
1348000992320,2cyclictest1432264-21awk21:35:004
1347994992322,1cyclictest0-21swapper/222:40:122
134799499231,21cyclictest0-21swapper/220:20:122
134799499230,22cyclictest0-21swapper/222:00:132
134799499230,22cyclictest0-21swapper/221:50:122
1347990992322,0cyclictest0-21swapper/121:20:111
1347990992321,1cyclictest1366706-21apt-get19:40:121
134799099230,22cyclictest0-21swapper/123:20:131
134799099230,22cyclictest0-21swapper/120:45:131
134799099230,22cyclictest0-21swapper/120:45:121
134799099230,22cyclictest0-21swapper/120:35:151
1347985992322,1cyclictest0-21swapper/023:20:140
134798599230,2cyclictest1412254-21run-parts21:00:000
134798599230,1cyclictest0-21swapper/020:55:000
1348008992220,1cyclictest1521797-21apt-get00:10:127
1348008992219,2cyclictest0-21swapper/721:50:127
1348008992218,4cyclictest0-21swapper/723:50:127
134800899220,21cyclictest0-21swapper/721:45:017
134800899220,21cyclictest0-21swapper/721:25:127
134800899220,21cyclictest0-21swapper/721:05:127
134800899220,21cyclictest0-21swapper/720:55:007
134800899220,1cyclictest0-21swapper/721:00:007
1348005992221,1cyclictest1438402-21apt-get21:45:126
1348005992220,1cyclictest1504213-21dump-pmu-power23:40:006
1348005992220,1cyclictest1449831-21apt-get22:05:166
134800599220,21cyclictest0-21swapper/622:40:126
134800599220,21cyclictest0-21swapper/620:55:016
134800599220,0cyclictest0-21swapper/621:55:126
1348002992221,1cyclictest1466965-21apt-get22:35:155
1348002992220,1cyclictest1435124-21turbostat21:40:005
1348002992219,3cyclictest1060-21cron21:05:005
134800299220,2cyclictest1354319-21grep19:20:005
134800299220,22cyclictest0-21swapper/500:40:005
134800299220,21cyclictest1504642-21apt-get23:40:115
134800299220,21cyclictest0-21swapper/521:30:115
134800299220,21cyclictest0-21swapper/521:05:125
134800299220,21cyclictest0-21swapper/520:15:145
134800299220,21cyclictest0-21swapper/519:55:125
134800299220,1cyclictest0-21swapper/519:40:115
134800099220,21cyclictest0-21swapper/423:55:154
134800099220,21cyclictest0-21swapper/423:19:594
134800099220,21cyclictest0-21swapper/422:10:114
134800099220,21cyclictest0-21swapper/421:10:134
134800099220,21cyclictest0-21swapper/420:30:154
134800099220,21cyclictest0-21swapper/419:30:124
1347996992221,1cyclictest1423679-21munin-run21:20:003
1347996992220,1cyclictest0-21swapper/321:20:113
134799699220,22cyclictest0-21swapper/321:05:133
134799699220,22cyclictest0-21swapper/300:15:113
134799699220,1cyclictest1371992-21munin-run19:50:003
134799699220,1cyclictest0-21swapper/300:25:113
134799699220,1cyclictest0-21swapper/300:00:003
1347994992222,0cyclictest0-21swapper/220:00:132
1347994992221,1cyclictest0-21swapper/221:30:122
134799499220,21cyclictest1510344-21apt-get23:50:112
134799499220,21cyclictest0-21swapper/221:35:142
134799499220,21cyclictest0-21swapper/220:35:152
134799499220,1cyclictest1487228-21http23:10:132
1347990992222,0cyclictest0-21swapper/121:45:131
1347990992221,1cyclictest0-21swapper/123:40:121
1347990992221,1cyclictest0-21swapper/120:25:001
1347990992221,1cyclictest0-21swapper/120:15:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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