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2026-06-18 - 21:02

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 Thu Jun 18, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19499582240179,19sleep30-21swapper/307:06:003
19500722233169,52sleep70-21swapper/707:07:427
19499572229169,49sleep20-21swapper/207:05:592
19500062222184,25sleep60-21swapper/607:06:456
19502002221189,21sleep50-21swapper/507:09:325
19500092220184,22sleep00-21swapper/007:06:470
19500602218189,19sleep40-21swapper/407:07:304
19501132213174,26sleep10-21swapper/107:08:171
195046299300,1cyclictest0-21swapper/710:15:187
195046299290,1cyclictest0-21swapper/712:25:137
195046299280,1cyclictest0-21swapper/709:00:177
195046299280,1cyclictest0-21swapper/707:40:017
195046299270,2cyclictest1-21systemd09:40:017
195046299270,1cyclictest1992443-21awk08:20:017
195046299270,1cyclictest0-21swapper/710:10:117
1950458992622,3cyclictest2122797-21apt-get12:00:116
195044599260,25cyclictest2016091-21awk09:00:001
1950462992520,4cyclictest0-21swapper/710:40:137
1950462992519,5cyclictest2101686-21apt11:25:017
195046299250,24cyclictest0-21swapper/709:40:137
195046299250,24cyclictest0-21swapper/707:40:137
195046299250,1cyclictest0-21swapper/710:55:117
195046299250,1cyclictest0-21swapper/709:50:127
195046299250,1cyclictest0-21swapper/709:30:127
195046299250,1cyclictest0-21swapper/708:40:117
195046299250,1cyclictest0-21swapper/708:39:597
195045899250,24cyclictest2069214-21idleruntime-cro10:30:016
195045899250,1cyclictest2108051-21apt-get11:35:126
195045199250,24cyclictest2024915-21turbostat09:14:593
195045199250,24cyclictest1968837-21sendmail07:40:003
1950458992423,1cyclictest1950771-21apt-get07:10:116
1950458992421,3cyclictest0-21swapper/609:05:126
1950458992421,3cyclictest0-21swapper/608:00:106
1950458992420,3cyclictest1969292-21apt-get07:40:136
195045899240,23cyclictest2078474-21apt-get10:45:126
195045899240,21cyclictest0-21swapper/609:45:106
195045899240,1cyclictest2128716-21apt-get12:10:136
195045399240,23cyclictest0-21swapper/411:35:014
195045399240,23cyclictest0-21swapper/408:50:164
195045199240,23cyclictest1986965-21apt-get08:10:123
1950447992423,1cyclictest0-21swapper/210:00:122
195044799240,23cyclictest0-21swapper/208:15:122
195044599240,23cyclictest2098782-21appstreamcli11:20:021
195044599240,23cyclictest2028312-21apt-get09:20:121
195044599240,23cyclictest0-21swapper/107:50:001
1950443992420,3cyclictest2094561-21grep11:10:180
1950462992320,3cyclictest0-21swapper/712:20:117
195046299230,22cyclictest2079851-21ntpq10:45:207
195046299230,22cyclictest0-21swapper/712:30:117
195046299230,1cyclictest2069196-21ls10:30:007
195046299230,0cyclictest0-21swapper/707:30:167
1950458992321,1cyclictest2140541-21apt-get12:30:126
1950458992320,3cyclictest0-21swapper/608:45:116
1950458992320,3cyclictest0-21swapper/607:55:116
1950458992319,3cyclictest0-21swapper/611:50:146
195045699230,22cyclictest0-21swapper/510:50:125
195045699230,22cyclictest0-21swapper/510:00:125
195045699230,22cyclictest0-21swapper/509:40:125
195045699230,22cyclictest0-21swapper/507:45:125
195045699230,1cyclictest2039688-21sleep09:40:005
1950453992322,1cyclictest0-21swapper/409:30:114
1950453992322,1cyclictest0-21swapper/408:10:114
1950453992322,1cyclictest0-21swapper/408:05:124
1950453992321,1cyclictest1962896-21latency_hist07:30:014
1950453992320,2cyclictest2140083-21perf12:29:594
1950453992318,4cyclictest2107564-21cron11:35:044
195045399230,23cyclictest2125306-21apt-get12:05:044
195045399230,22cyclictest0-21swapper/408:55:124
195045399230,21cyclictest0-21swapper/410:25:134
195045399230,0cyclictest0-21swapper/412:35:104
1950451992322,1cyclictest2075534-21apt-get10:40:123
1950451992322,1cyclictest0-21swapper/309:05:173
1950451992321,1cyclictest2086867-21sendmail11:00:013
195045199230,23cyclictest2099176-21apt-get11:20:103
195045199230,22cyclictest2062129-21sh10:15:183
195045199230,22cyclictest1992871-21apt-get08:20:103
195045199230,22cyclictest1968801-21apt-get07:40:033
195045199230,22cyclictest0-21swapper/312:30:113
195045199230,22cyclictest0-21swapper/307:10:163
195045199230,0cyclictest0-21swapper/309:30:123
1950447992323,0cyclictest0-21swapper/209:25:192
1950447992322,1cyclictest1995846-21apt-get08:25:112
1950447992322,1cyclictest1963330-21apt-get07:30:122
1950447992319,3cyclictest2104622-21cron11:30:002
1950447992318,4cyclictest2072135-21idleruntime-cro10:35:012
1950447992318,4cyclictest2072135-21idleruntime-cro10:35:002
195044799230,22cyclictest2096175-21apt-get11:15:102
195044799230,1cyclictest1966272-21apt-get07:35:132
195044799230,1cyclictest0-21swapper/210:50:172
1950445992323,0cyclictest0-21swapper/109:45:091
195044599230,2cyclictest2093234-21apt-get11:10:111
195044599230,23cyclictest0-21swapper/109:25:181
195044599230,22cyclictest2069626-21apt-get10:30:101
195044599230,22cyclictest2069626-21apt-get10:30:101
195044599230,1cyclictest2122354-21munin-run12:00:001
1950443992322,1cyclictest1976514-21awk07:50:180
195044399230,23cyclictest0-21swapper/010:05:170
195044399230,22cyclictest0-21swapper/011:30:120
195044399230,22cyclictest0-21swapper/009:05:120
195044399230,1cyclictest1995682-21date08:25:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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