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2026-05-06 - 02:01

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 Tue May 05, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3782402262181,25sleep50-21swapper/519:06:505
3785952244173,23sleep20-21swapper/219:09:052
3780712236182,42sleep60-21swapper/619:05:466
3787062230167,21sleep30-21swapper/319:09:453
3782242221181,25sleep70-21swapper/719:06:437
3782682219178,25sleep00-21swapper/019:07:010
3786382214184,20sleep10-21swapper/119:09:201
3784302209177,20sleep40-21swapper/419:08:014
378965992921,7cyclictest0-21swapper/620:20:026
378965992921,7cyclictest0-21swapper/620:20:016
37895999297,4cyclictest0-21swapper/419:39:404
37896599270,21cyclictest601144-21apt-get00:35:126
37896599260,19cyclictest0-21swapper/600:00:136
37895999264,4cyclictest0-21swapper/422:46:244
37895999264,4cyclictest0-21swapper/419:28:424
378959992621,4cyclictest597307-21apt00:30:014
378965992523,1cyclictest0-21swapper/621:15:196
378965992521,4cyclictest502062-21perf22:10:016
378965992521,3cyclictest451459-21apt-get20:55:136
378965992519,5cyclictest0-21swapper/623:25:146
37896599250,22cyclictest411998-21ntpq19:55:196
37896599250,21cyclictest567117-21apt-get23:45:126
37896599250,1cyclictest471837-21apt-get21:25:146
37896599250,0cyclictest0-21swapper/619:45:146
37895999253,4cyclictest0-21swapper/423:41:184
37895999253,4cyclictest0-21swapper/422:35:244
37895999253,4cyclictest0-21swapper/422:24:254
37895999253,4cyclictest0-21swapper/422:13:274
37895999253,4cyclictest0-21swapper/422:02:274
37895999253,4cyclictest0-21swapper/421:51:284
37895999253,4cyclictest0-21swapper/421:40:304
37895999253,4cyclictest0-21swapper/420:56:334
37895999253,4cyclictest0-21swapper/420:45:344
37895999253,4cyclictest0-21swapper/420:23:374
37895999253,4cyclictest0-21swapper/420:12:374
37895999253,4cyclictest0-21swapper/420:12:374
37895999252,22cyclictest621ktimers/400:10:134
378957992521,3cyclictest420854-21apt-get20:10:133
378957992521,3cyclictest420854-21apt-get20:10:133
37895799250,24cyclictest0-21swapper/322:15:133
37895799250,24cyclictest0-21swapper/321:45:053
37895499250,1cyclictest0-21swapper/200:20:012
37895499250,1cyclictest0-21swapper/200:20:012
37895499250,0cyclictest0-21swapper/219:20:212
37895299253,1cyclictest0-21swapper/100:05:011
37895299250,24cyclictest0-21swapper/122:15:001
37894999250,24cyclictest495213-21latency_hist22:00:020
37896599240,23cyclictest0-21swapper/622:55:046
37896599240,20cyclictest0-21swapper/622:10:136
37895999242,4cyclictest0-21swapper/422:57:224
37895999240,23cyclictest0-21swapper/421:00:144
37895799240,24cyclictest410215-21munin-run19:55:013
378954992421,3cyclictest0-21swapper/221:40:132
378954992420,4cyclictest0-21swapper/223:40:122
37895499240,22cyclictest434438-21apt-get20:30:132
378949992423,1cyclictest553540-21apt-get23:25:140
378949992420,3cyclictest413657-21awk20:00:010
378968992322,1cyclictest0-21swapper/719:25:037
37896899230,22cyclictest482078-21apt-get21:40:137
37896899230,22cyclictest0-21swapper/723:55:127
37896899230,1cyclictest0-21swapper/720:10:137
37896899230,1cyclictest0-21swapper/720:10:137
378965992323,0cyclictest0-21swapper/622:40:106
378965992320,3cyclictest0-21swapper/623:20:016
378965992320,3cyclictest0-21swapper/619:20:156
378965992319,4cyclictest0-21swapper/623:30:136
37896599230,22cyclictest0-21swapper/621:50:136
37896599230,20cyclictest475229-21apt-get21:30:146
37896599230,0cyclictest0-21swapper/600:20:106
37896599230,0cyclictest0-21swapper/600:20:106
37895999234,1cyclictest0-21swapper/400:36:134
378959992320,3cyclictest476615-21ntp_states21:30:194
37895999230,22cyclictest507223-21ntpq22:15:184
378957992321,2cyclictest536558-21apt-get23:00:143
378957992321,2cyclictest413617-21munin-run20:00:013
37895799230,22cyclictest0-21swapper/322:30:113
37895799230,22cyclictest0-21swapper/321:10:193
37895799230,22cyclictest0-21swapper/320:15:133
37895799230,22cyclictest0-21swapper/320:15:133
378954992321,2cyclictest0-21swapper/221:25:202
378954992320,3cyclictest447642-21basename20:50:012
378954992319,3cyclictest0-21swapper/220:10:132
378954992319,3cyclictest0-21swapper/220:10:122
37895499230,22cyclictest0-21swapper/222:40:112
37895499230,0cyclictest0-21swapper/219:35:132
37895499230,0cyclictest0-21swapper/200:35:122
378952992321,1cyclictest440993-21cut20:40:021
37895299230,22cyclictest520863-21ntpq22:35:171
37895299230,22cyclictest0-21swapper/122:50:011
37895299230,22cyclictest0-21swapper/122:30:191
37895299230,22cyclictest0-21swapper/119:30:131
37895299230,1cyclictest0-21swapper/123:30:021
378949992322,1cyclictest0-21swapper/000:05:170
37894999230,23cyclictest593932-21perf00:25:010
37894999230,23cyclictest593932-21perf00:25:010
37894999230,22cyclictest0-21swapper/021:45:040
37894999230,1cyclictest0-21swapper/022:35:110
378968992222,0cyclictest0-21swapper/719:15:147
378968992221,1cyclictest492275-21apt-get21:55:137
378968992221,1cyclictest440875-21appstreamcli20:40:047
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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