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2026-01-11 - 07:40

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 Sun Jan 11, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10280962233168,51sleep20-21swapper/219:07:012
10282492217178,24sleep40-21swapper/419:09:114
10281402217179,24sleep50-21swapper/519:07:355
10281632214183,20sleep10-21swapper/119:07:551
10281152213183,19sleep00-21swapper/019:07:140
10281682210176,22sleep60-21swapper/619:08:006
10280412210180,19sleep30-21swapper/319:06:133
10280092203168,23sleep70-21swapper/719:05:447
102855399297,4cyclictest0-21swapper/721:16:197
102855399297,4cyclictest0-21swapper/720:32:237
102854299290,28cyclictest1069179-21sendmail-msp20:20:003
102854299290,28cyclictest1069179-21sendmail-msp20:20:003
102855399286,4cyclictest0-21swapper/720:43:227
102854299280,22cyclictest1095550-21apt-get21:05:113
1028537992621,4cyclictest1089826-21apt-get20:55:111
102855199250,24cyclictest1196261-21wc00:00:016
102854899250,2cyclictest1106553-21idleruntime-cro21:25:005
102854499250,25cyclictest1057736-21tr20:00:004
1028542992524,1cyclictest0-21swapper/323:45:113
1028542992521,4cyclictest0-21swapper/320:05:123
102854299250,3cyclictest1219074-21basename00:40:013
102854299250,24cyclictest1138418-21apt-get22:20:093
1028537992520,4cyclictest1196206-21awk00:00:001
102853399250,1cyclictest1101251-21apt-get21:15:100
102855399247,0cyclictest0-21swapper/720:10:257
1028553992423,1cyclictest0-21swapper/723:10:117
102855199240,23cyclictest0-21swapper/600:25:136
102854899240,0cyclictest0-21swapper/521:40:115
1028544992423,1cyclictest0-21swapper/420:35:004
102854499240,23cyclictest0-21swapper/422:25:124
1028542992419,4cyclictest1126584-21basename22:00:003
102854299240,1cyclictest0-21swapper/319:15:103
102854299240,0cyclictest0-21swapper/323:00:103
1028537992419,5cyclictest1173042-21apt-get23:20:001
102853799240,23cyclictest1084078-21dpkg20:45:011
102853799240,23cyclictest0-21swapper/123:40:121
102853799240,22cyclictest1135119-21dump-pmu-power22:15:011
102853799240,21cyclictest0-21swapper/119:55:131
102853799240,0cyclictest0-21swapper/120:10:141
102853399240,1cyclictest1049151-21idleruntime-cro19:45:010
1028553992319,3cyclictest1-21systemd19:40:007
102855399230,22cyclictest0-21swapper/723:35:107
1028548992321,1cyclictest1089826-21apt-get20:55:115
102854899230,22cyclictest0-21swapper/523:15:015
102854899230,22cyclictest0-21swapper/520:45:115
102854499230,23cyclictest1118003-21awk21:45:004
102854499230,22cyclictest1101251-21apt-get21:15:114
102854499230,1cyclictest0-21swapper/421:20:124
1028542992321,1cyclictest1038145-21apt-get19:25:113
102854299230,20cyclictest1086976-21apt-get20:50:113
1028539992321,1cyclictest1193327-21perf23:55:002
1028539992321,1cyclictest1152704-21apt-get22:45:112
102853999230,22cyclictest1052025-21idleruntime-cro19:50:002
1028537992322,1cyclictest1205201-21apt-get00:15:121
1028537992320,3cyclictest1126989-21apt-get22:00:111
102853799230,22cyclictest0-21swapper/121:35:121
102853799230,22cyclictest0-21swapper/119:25:121
102853799230,22cyclictest0-21swapper/100:30:111
102853399230,22cyclictest0-21swapper/019:35:110
102853399230,22cyclictest0-21swapper/000:30:110
1028553992221,1cyclictest1032414-21apt-get19:15:117
1028553992221,1cyclictest0-21swapper/722:25:127
1028553992221,1cyclictest0-21swapper/719:45:117
1028553992220,1cyclictest1176602-21apt-get23:25:127
102855399220,21cyclictest0-21swapper/722:50:117
102855399220,21cyclictest0-21swapper/722:30:117
102855399220,21cyclictest0-21swapper/700:20:127
102855399220,0cyclictest0-21swapper/721:35:127
1028551992221,1cyclictest0-21swapper/623:05:136
1028551992221,1cyclictest0-21swapper/620:45:016
1028551992220,1cyclictest1098400-21apt-get21:10:116
102855199220,22cyclictest0-21swapper/619:55:006
102855199220,21cyclictest1072431-21apt-get20:25:136
102855199220,21cyclictest0-21swapper/621:30:126
102855199220,1cyclictest1118412-21apt-get21:45:116
1028548992221,1cyclictest1031294-21awk19:15:005
1028548992221,1cyclictest0-21swapper/523:20:015
1028548992220,1cyclictest1100834-21munin-run21:15:005
1028548992220,1cyclictest0-21swapper/522:30:105
102854899220,21cyclictest0-21swapper/523:50:115
102854899220,21cyclictest0-21swapper/522:50:115
102854899220,0cyclictest0-21swapper/519:35:105
1028544992220,1cyclictest0-21swapper/421:55:124
102854499220,22cyclictest0-21swapper/423:05:014
102854499220,21cyclictest1069135-21sendmail20:20:014
102854499220,21cyclictest1069135-21sendmail20:20:014
102854499220,21cyclictest0-21swapper/420:35:124
102854499220,1cyclictest1193311-21idleruntime-cro23:55:004
1028542992221,1cyclictest0-21swapper/321:55:003
1028542992218,4cyclictest0-21swapper/321:25:003
102854299220,1cyclictest1176187-21munin-run23:25:013
102854299220,0cyclictest0-21swapper/323:30:123
102854299220,0cyclictest0-21swapper/300:15:113
1028539992222,0cyclictest0-21swapper/221:35:122
102853999220,21cyclictest0-21swapper/220:55:112
102853999220,1cyclictest1083431-21apt-get20:45:022
102853999220,0cyclictest0-21swapper/223:40:122
1028537992221,1cyclictest1149855-21apt-get22:40:141
1028537992219,3cyclictest0-21swapper/119:10:121
102853799220,22cyclictest0-21swapper/120:45:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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