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2026-01-11 - 23:11

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 12:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14731072237179,20sleep10-21swapper/107:09:151
14731502228194,22sleep30-21swapper/307:09:483
14729662224187,23sleep00-21swapper/007:07:130
14729632223164,19sleep60-21swapper/607:07:116
14728722217162,17sleep70-21swapper/707:05:527
14729162216160,18sleep40-21swapper/407:06:294
14730422213178,23sleep20-21swapper/207:08:192
14731522212179,21sleep50-21swapper/507:09:515
16103092510,0sleep30-21swapper/311:05:133
147341399272,24cyclictest1551978-21munin-run09:25:005
1473413992624,1cyclictest1503119-21munin-run08:00:005
147340899260,25cyclictest1646782-21dump-pmu-power12:10:003
147341399250,23cyclictest0-21swapper/508:05:125
1473408992523,2cyclictest1604344-21apt-get10:55:113
147341999240,23cyclictest1580812-21awk10:15:017
147341999240,21cyclictest0-21swapper/708:15:137
147341599240,24cyclictest0-21swapper/612:14:596
147341399241,22cyclictest1590062-21apt-get10:30:115
1473410992421,2cyclictest1537681-21perf09:00:004
147340899240,2cyclictest0-21swapper/309:19:593
147340899240,24cyclictest1543386-21idleruntime-cro09:10:003
147340499240,23cyclictest0-21swapper/208:30:132
1473419992320,3cyclictest0-21swapper/711:20:017
1473419992315,4cyclictest0-21swapper/708:55:007
147341999230,22cyclictest0-21swapper/710:25:017
147341999230,22cyclictest0-21swapper/708:20:147
147341999230,22cyclictest0-21swapper/707:25:137
147341999230,0cyclictest0-21swapper/711:50:127
147341999230,0cyclictest0-21swapper/707:50:127
1473415992322,1cyclictest1473703-21apt-get07:10:166
1473415992322,1cyclictest0-21swapper/611:20:016
1473415992321,1cyclictest0-21swapper/609:20:006
147341599230,1cyclictest1586528-21munin-run10:25:006
1473413992321,2cyclictest0-21swapper/510:15:135
147341399231,21cyclictest1512109-21apt-get08:15:125
147341399231,21cyclictest0-21swapper/512:20:095
147341399230,22cyclictest1497158-21sleep07:49:595
147341399230,22cyclictest0-21swapper/511:35:125
147341399230,22cyclictest0-21swapper/509:45:025
147341099230,22cyclictest0-21swapper/410:55:114
147341099230,22cyclictest0-21swapper/410:15:134
147341099230,0cyclictest0-21swapper/407:15:154
1473408992322,1cyclictest1618649-21apt-get11:20:103
1473408992322,1cyclictest1595346-21turbostat10:40:013
147340899230,23cyclictest1649629-21apt-get12:15:003
147340899230,23cyclictest1491166-21munin-run07:40:003
147340899230,23cyclictest0-21swapper/307:40:013
147340899230,22cyclictest1618208-21turbostat11:20:013
147340899230,1cyclictest1578367-21apt-get10:10:123
1473404992321,1cyclictest1485855-21apt-get07:30:112
1473404992321,1cyclictest0-21swapper/207:39:592
1473404992320,2cyclictest1646779-21idleruntime-cro12:10:002
147340499230,22cyclictest0-21swapper/212:20:072
147339899230,22cyclictest0-21swapper/010:05:120
147339899230,22cyclictest0-21swapper/009:45:020
147339899230,22cyclictest0-21swapper/008:35:120
1473419992220,1cyclictest0-21swapper/712:30:117
147341999220,21cyclictest1595342-21cron10:40:007
147341999220,21cyclictest0-21swapper/712:00:117
147341999220,21cyclictest0-21swapper/708:25:147
147341999220,21cyclictest0-21swapper/707:35:177
147341999220,1cyclictest0-21swapper/712:15:007
1473415992222,0cyclictest0-21swapper/609:25:106
1473415992221,1cyclictest1651092-21apt-get12:20:096
1473415992221,1cyclictest0-21swapper/609:00:006
147341599220,21cyclictest1641075-21perf12:00:006
147341599220,21cyclictest1494715-21apt-get07:45:116
147341599220,21cyclictest0-21swapper/611:50:126
147341599220,21cyclictest0-21swapper/610:15:136
147341599220,21cyclictest0-21swapper/608:00:136
147341599220,21cyclictest0-21swapper/607:20:116
147341599220,1cyclictest1606781-21munin-run11:00:016
147341599220,0cyclictest0-21swapper/611:20:116
1473413992220,1cyclictest0-21swapper/511:10:115
147341399220,21cyclictest0-21swapper/511:20:115
147341399220,21cyclictest0-21swapper/511:05:125
147341399220,1cyclictest0-21swapper/508:44:595
1473410992222,0cyclictest0-21swapper/407:10:164
1473410992221,1cyclictest1549144-21sendmail-msp09:19:594
1473410992221,1cyclictest0-21swapper/408:15:114
1473410992221,0cyclictest0-21swapper/410:50:124
1473410992220,1cyclictest1564090-21apt-get09:45:134
147341099220,21cyclictest0-21swapper/408:00:134
1473408992221,1cyclictest0-21swapper/308:50:003
147340899220,21cyclictest0-21swapper/311:45:093
147340899220,21cyclictest0-21swapper/307:20:113
1473404992221,1cyclictest1543418-21basename09:10:002
1473404992221,1cyclictest0-21swapper/211:45:112
1473404992220,1cyclictest0-21swapper/209:15:002
147340499220,21cyclictest1480148-21apt-get07:20:112
147340499220,21cyclictest0-21swapper/211:25:112
147340499220,21cyclictest0-21swapper/211:00:122
147340499220,21cyclictest0-21swapper/209:24:592
147340499220,21cyclictest0-21swapper/207:55:132
147340499220,1cyclictest1534826-21perf08:55:002
1473402992221,1cyclictest1512109-21apt-get08:15:131
1473402992218,4cyclictest0-21swapper/109:40:121
147340299220,22cyclictest0-21swapper/108:42:511
147340299220,1cyclictest1540546-21munin-run09:04:591
1473398992221,1cyclictest0-21swapper/012:00:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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