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2025-12-27 - 22:19

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 Sat Dec 27, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6047932239173,21sleep70-21swapper/707:08:417
6046212220164,44sleep30-21swapper/307:06:123
6047012219190,18sleep00-21swapper/007:07:220
6045792216182,22sleep60-21swapper/607:05:356
6047912212179,21sleep50-21swapper/507:08:395
6045952209182,17sleep40-21swapper/407:05:494
6045932208175,21sleep20-21swapper/207:05:462
6024482198171,17sleep10-21swapper/107:05:131
60513199260,25cyclictest0-21swapper/711:40:007
60512099261,24cyclictest0-21swapper/308:45:003
605126992523,1cyclictest681ktimers/512:20:145
605131992420,0cyclictest0-21swapper/709:50:127
605131992420,0cyclictest0-21swapper/709:05:117
605131992419,1cyclictest687272-21apt-get09:30:127
605131992418,1cyclictest0-21swapper/712:20:147
605131992418,1cyclictest0-21swapper/708:39:597
60513199240,2cyclictest632443-21apt-get07:55:117
60513199240,0cyclictest0-21swapper/708:50:127
60513199240,0cyclictest0-21swapper/708:50:117
605126992420,3cyclictest712574-21perf10:15:015
60512299240,23cyclictest0-21swapper/409:05:114
60511799240,23cyclictest0-21swapper/208:05:002
605131992321,1cyclictest623230-21sendmail-msp07:40:007
605131992320,0cyclictest0-21swapper/708:10:147
60513199230,22cyclictest0-21swapper/711:34:597
60513199230,22cyclictest0-21swapper/711:00:147
60513199230,22cyclictest0-21swapper/709:35:127
60513199230,22cyclictest0-21swapper/708:30:007
60512899230,22cyclictest0-21swapper/610:30:136
605126992321,1cyclictest658439-21apt-get08:40:115
60512699230,23cyclictest646589-21awk08:20:005
60512699230,22cyclictest791460-21apt-get12:30:095
60512699230,22cyclictest611448-21awk07:20:005
60512699230,22cyclictest0-21swapper/512:15:135
605122992321,2cyclictest1-21systemd11:40:004
605122992321,1cyclictest0-21swapper/407:35:124
60512299230,22cyclictest764807-21munin-run11:44:594
60512299230,1cyclictest0-21swapper/410:40:124
60512099230,23cyclictest658016-21sleep08:40:003
60512099230,1cyclictest0-21swapper/308:20:003
605117992322,1cyclictest0-21swapper/209:05:122
605117992321,1cyclictest634880-21munin-run08:00:002
60511799230,22cyclictest623627-21apt-get07:40:122
60511799230,22cyclictest0-21swapper/212:40:002
60511499230,22cyclictest0-21swapper/109:45:121
60511499230,22cyclictest0-21swapper/109:40:151
605110992321,1cyclictest646559-21sh08:20:000
60511099230,23cyclictest704030-21grep10:00:010
60511099230,23cyclictest0-21swapper/009:50:010
60511099230,22cyclictest724424-21apt-get10:35:120
60511099230,22cyclictest0-21swapper/010:25:130
60513199220,21cyclictest0-21swapper/711:55:117
60513199220,21cyclictest0-21swapper/711:25:147
60513199220,21cyclictest0-21swapper/708:55:137
60513199220,1cyclictest0-21swapper/712:20:007
60513199220,1cyclictest0-21swapper/709:05:017
605128992222,0cyclictest0-21swapper/610:05:146
60512899220,22cyclictest0-21swapper/607:30:006
60512899220,21cyclictest623627-21apt-get07:40:116
60512899220,21cyclictest0-21swapper/612:20:016
60512899220,21cyclictest0-21swapper/609:15:026
60512899220,1cyclictest629173-21munin-run07:50:006
605126992221,0cyclictest0-21swapper/510:00:135
605126992220,1cyclictest647011-21apt-get08:20:135
60512699220,21cyclictest0-21swapper/511:45:155
60512699220,21cyclictest0-21swapper/508:35:105
60512699220,1cyclictest617839-21apt-get07:30:125
60512699220,0cyclictest0-21swapper/510:45:015
605122992221,1cyclictest638431-21apt-get08:05:144
605122992220,1cyclictest793888-21apt-get12:35:004
605122992220,1cyclictest678691-21apt-get09:15:134
605122992219,2cyclictest658009-21perf08:40:004
60512299220,21cyclictest0-21swapper/411:45:154
60512299220,21cyclictest0-21swapper/409:35:124
60512299220,21cyclictest0-21swapper/409:20:134
60512299220,21cyclictest0-21swapper/408:25:124
60512299220,21cyclictest0-21swapper/407:20:144
60512299220,21cyclictest0-21swapper/407:15:144
60512299220,0cyclictest0-21swapper/412:15:134
605120992221,1cyclictest0-21swapper/307:45:013
60512099220,4cyclictest0-21swapper/309:00:013
60512099220,22cyclictest0-21swapper/311:00:143
60512099220,22cyclictest0-21swapper/310:20:163
60512099220,22cyclictest0-21swapper/309:10:123
605117992221,1cyclictest0-21swapper/209:35:122
60511799220,2cyclictest727294-21apt-get10:40:132
60511799220,21cyclictest735848-21apt-get10:55:132
60511799220,21cyclictest0-21swapper/210:20:162
60511799220,21cyclictest0-21swapper/209:55:142
60511799220,21cyclictest0-21swapper/208:35:002
60511799220,1cyclictest759500-21apt-get11:35:132
60511799220,1cyclictest0-21swapper/212:10:122
60511799220,1cyclictest0-21swapper/209:00:012
60511799220,0cyclictest0-21swapper/207:35:122
605114992221,1cyclictest0-21swapper/111:30:121
605114992221,1cyclictest0-21swapper/108:00:121
605114992220,1cyclictest755966-21munin-run11:30:001
60511499220,21cyclictest0-21swapper/111:15:011
60511499220,21cyclictest0-21swapper/109:30:121
60511499220,21cyclictest0-21swapper/109:00:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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