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2026-01-12 - 06:31

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 Mon Jan 12, 2026 00:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19174042232194,24sleep10-21swapper/119:07:291
19174472223166,44sleep60-21swapper/619:08:056
19174032223183,27sleep00-21swapper/019:07:280
19173742223179,20sleep70-21swapper/719:07:037
19173502223168,18sleep30-21swapper/319:06:413
19172862212173,25sleep50-21swapper/519:05:475
19175292210183,17sleep40-21swapper/419:09:154
19173132208174,22sleep20-21swapper/219:06:082
191780899270,26cyclictest2036110-21idleruntime-cro22:35:002
191781899260,13cyclictest0-21swapper/500:10:115
191780499260,25cyclictest2056537-21apt-get23:10:101
191782499250,23cyclictest0-21swapper/723:10:107
191781899250,3cyclictest1958412-21idleruntime-cro20:20:005
191781599250,25cyclictest363-21systemd-journal00:20:004
191781599250,24cyclictest2050374-21cron23:00:004
191780499250,24cyclictest0-21swapper/119:20:131
191782499240,23cyclictest1975563-21apt-get20:50:007
191782499240,23cyclictest0-21swapper/723:35:117
1917818992423,1cyclictest0-21swapper/500:15:115
1917818992422,1cyclictest0-21swapper/521:35:015
1917818992420,3cyclictest2042262-21apt-get22:45:145
191781599240,23cyclictest1975563-21apt-get20:50:014
1917813992424,0cyclictest0-21swapper/300:05:123
191781399240,1cyclictest51-21ksoftirqd/321:30:013
191781399240,12cyclictest0-21swapper/300:10:123
1917804992422,1cyclictest0-21swapper/119:45:001
1917824992321,1cyclictest0-21swapper/720:55:147
191782499230,22cyclictest666-21rs:main7
191782499230,22cyclictest1941703-21apt-get19:50:127
191782499230,21cyclictest0-21swapper/723:00:007
1917820992321,1cyclictest0-21swapper/600:30:126
191782099230,3cyclictest2061865-21lockfile-create23:20:006
191782099230,21cyclictest0-21swapper/600:25:126
191782099230,0cyclictest0-21swapper/622:10:116
1917818992321,1cyclictest1935998-21apt-get19:40:115
191781899230,22cyclictest0-21swapper/521:30:005
191781599230,22cyclictest2027540-21munin-run22:20:004
1917813992322,1cyclictest0-21swapper/321:40:133
191780899230,22cyclictest2062266-21apt-get23:20:112
191780499230,22cyclictest2065118-21apt-get23:25:131
191780499230,22cyclictest1967415-21apt-get20:35:131
191780499230,22cyclictest0-21swapper/123:35:111
191780499230,22cyclictest0-21swapper/121:30:111
191780499230,22cyclictest0-21swapper/120:40:141
191780499230,0cyclictest0-21swapper/100:10:111
1917799992321,1cyclictest2025101-21apt-get22:15:140
191779999230,23cyclictest1990127-21idleruntime-cro21:14:590
191779999230,22cyclictest1975563-21apt-get20:50:010
191779999230,22cyclictest0-21swapper/021:15:120
191779999230,22cyclictest0-21swapper/021:05:110
191779999230,21cyclictest1950279-21apt-get20:05:120
191782499229,13cyclictest0-21swapper/722:10:057
191782499229,0cyclictest0-21swapper/723:48:557
191782499229,0cyclictest0-21swapper/720:09:157
191782499229,0cyclictest0-21swapper/700:21:537
191782499220,21cyclictest2076489-21kworker/u16:1+flush-259:000:05:117
191782499220,1cyclictest2013671-21apt-get21:55:107
191782499220,1cyclictest1924569-21apt-get19:20:137
1917820992221,1cyclictest0-21swapper/623:45:116
191782099220,22cyclictest1944142-21perf19:55:006
191782099220,22cyclictest0-21swapper/622:40:006
191782099220,21cyclictest0-21swapper/623:40:116
191782099220,21cyclictest0-21swapper/622:40:126
191782099220,21cyclictest0-21swapper/621:10:106
191782099220,1cyclictest1946986-21turbostat20:00:006
1917818992220,1cyclictest1976251-21apt-get20:50:115
191781899220,21cyclictest0-21swapper/522:10:115
191781899220,21cyclictest0-21swapper/520:35:145
191781899220,21cyclictest0-21swapper/519:45:115
191781899220,21cyclictest0-21swapper/500:00:135
191781899220,1cyclictest2019396-21apt-get22:05:115
191781899220,1cyclictest0-21swapper/519:40:005
191781899220,0cyclictest0-21swapper/519:30:115
1917815992220,1cyclictest1952712-21munin-run20:10:004
191781599220,22cyclictest2036537-21apt-get22:35:144
191781599220,21cyclictest0-21swapper/421:25:114
191781599220,21cyclictest0-21swapper/419:30:114
1917813992221,1cyclictest1958855-21apt-get20:20:113
191781399220,22cyclictest0-21swapper/319:45:123
1917808992221,1cyclictest2108138-21latency_hist00:40:002
1917808992221,1cyclictest2071137-21apt-get23:35:122
1917808992221,1cyclictest2045111-21apt-get22:50:122
191780899220,22cyclictest2030829-21apt-get22:25:122
191780899220,22cyclictest1969868-21awk20:40:002
191780899220,21cyclictest0-21swapper/222:00:122
191780899220,21cyclictest0-21swapper/219:55:122
191780899220,21cyclictest0-21swapper/219:20:122
191780899220,21cyclictest0-21swapper/219:10:112
1917804992221,1cyclictest0-21swapper/123:00:111
1917804992220,1cyclictest2047959-21apt-get22:55:101
1917804992220,1cyclictest0-21swapper/100:25:001
191780499220,21cyclictest2016546-21apt-get22:00:121
191780499220,21cyclictest0-21swapper/121:40:111
191780499220,21cyclictest0-21swapper/120:55:131
191780499220,21cyclictest0-21swapper/120:00:121
191780499220,21cyclictest0-21swapper/119:35:121
191780499220,1cyclictest2064690-21latency_hist23:25:001
191780499220,1cyclictest1975590-21awk20:50:001
1917799992222,0cyclictest0-21swapper/021:25:120
1917799992222,0cyclictest0-21swapper/000:05:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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