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2026-07-10 - 00:31

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 Thu Jul 09, 2026 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41942162255183,22sleep70-21swapper/707:08:127
41942132240168,60sleep40-21swapper/407:08:104
41941872235167,22sleep50-21swapper/507:07:475
41942682232192,25sleep30-21swapper/307:08:563
41942472227169,48sleep00-21swapper/007:08:370
41942532225192,22sleep60-21swapper/607:08:446
41942112219185,23sleep20-21swapper/207:08:072
41942662217180,25sleep10-21swapper/107:08:541
57099280,27cyclictest0-21swapper/312:30:163
55999280,27cyclictest0-21swapper/012:25:130
56599270,3cyclictest113497-21910:20:002
55999270,22cyclictest0-21swapper/011:30:130
58299260,24cyclictest60310-21perf08:50:017
57899260,25cyclictest172445-21awk12:00:005
57099260,25cyclictest0-21swapper/312:20:123
57099260,1cyclictest0-21swapper/309:05:133
56199260,25cyclictest62848-21grep08:50:251
58299250,24cyclictest22283-21tar07:45:017
580992520,4cyclictest125269-21awk10:40:006
58099250,24cyclictest40097-21apt-get08:15:136
58099250,24cyclictest139986-21idleruntime-cro11:05:006
57499250,24cyclictest36729-21dump-pmu-power08:09:594
57099250,22cyclictest84373-21apt-get09:30:123
57099250,0cyclictest0-21swapper/311:30:123
56599250,24cyclictest139990-21ls11:05:012
56599250,24cyclictest0-21swapper/212:30:112
55999250,24cyclictest0-21swapper/012:20:130
55999250,21cyclictest0-21swapper/008:35:110
55999250,1cyclictest0-21swapper/009:05:120
55999250,0cyclictest0-21swapper/012:30:170
58299240,23cyclictest3422186-21systemd-journal11:09:597
58299240,1cyclictest56160-21ntpq08:40:187
58099240,24cyclictest0-21swapper/611:14:596
58099240,23cyclictest104574-21sh10:05:006
57499240,24cyclictest105008-21apt-get10:05:124
57099240,24cyclictest0-21swapper/308:40:123
57099240,22cyclictest0-21swapper/307:55:193
57099240,0cyclictest0-21swapper/312:25:123
565992424,0cyclictest0-21swapper/210:50:182
565992423,1cyclictest141787-21ntpq11:05:202
56599240,23cyclictest16046-21awk07:35:002
56199240,23cyclictest164043-21apt-get11:45:121
56199240,23cyclictest0-21swapper/111:30:111
56199240,23cyclictest0-21swapper/110:00:121
559992423,1cyclictest0-21swapper/008:05:130
559992423,0cyclictest0-21swapper/009:45:140
55999240,24cyclictest0-21swapper/011:00:110
55999240,23cyclictest75073-21basename09:15:000
582992323,0cyclictest0-21swapper/712:35:107
582992322,1cyclictest125692-21apt-get10:40:127
582992322,1cyclictest0-21swapper/711:14:597
582992318,4cyclictest3459-21ls07:15:007
58299230,22cyclictest159413-21ntpq11:35:157
58299230,22cyclictest0-21swapper/709:20:137
58299230,22cyclictest0-21swapper/709:20:127
580992322,1cyclictest0-21swapper/610:10:126
580992321,1cyclictest98696-21awk09:55:016
580992320,2cyclictest3422186-21systemd-journal11:39:596
580992318,3cyclictest9679-21unixbench_multi07:20:236
58099230,22cyclictest193507-21apt-get12:35:116
58099230,22cyclictest128635-21apt-get10:45:136
58099230,22cyclictest0-21swapper/608:35:116
57899230,22cyclictest0-21swapper/511:45:125
570992323,0cyclictest0-21swapper/309:45:133
570992323,0cyclictest0-21swapper/308:05:123
570992322,1cyclictest0-21swapper/308:45:113
570992316,1cyclictest0-21swapper/308:30:123
570992315,4cyclictest38436-21awk08:10:163
57099230,22cyclictest0-21swapper/310:25:113
57099230,22cyclictest0-21swapper/309:55:183
57099230,0cyclictest0-21swapper/311:00:123
57099230,0cyclictest0-21swapper/308:35:123
565992323,0cyclictest0-21swapper/210:35:132
565992322,1cyclictest10554-21apt-get07:25:122
565992321,1cyclictest0-21swapper/207:40:202
56599230,23cyclictest0-21swapper/208:55:002
56599230,22cyclictest69591-21apt-get09:05:132
56599230,22cyclictest0-21swapper/212:10:122
56599230,22cyclictest0-21swapper/211:55:092
56599230,22cyclictest0-21swapper/210:40:122
56599230,22cyclictest0-21swapper/210:30:102
56599230,22cyclictest0-21swapper/208:55:102
56599230,1cyclictest151819-21munin-run11:25:002
56199230,22cyclictest69150-21cron09:05:001
56199230,1cyclictest14903-21ntpq07:30:201
559992321,1cyclictest13517-21apt-get07:30:130
559992321,1cyclictest0-21swapper/012:00:000
559992316,0cyclictest0-21swapper/008:30:110
55999230,22cyclictest888-21rs:main0
55999230,22cyclictest0-21swapper/008:40:120
582992221,1cyclictest102068-21apt-get10:00:127
582992221,1cyclictest0-21swapper/708:20:117
582992220,1cyclictest0-21swapper/707:30:007
58299220,21cyclictest0-21swapper/711:55:007
58299220,21cyclictest0-21swapper/707:55:117
58299220,1cyclictest152244-21apt-get11:25:127
58299220,1cyclictest0-21swapper/709:30:117
580992222,0cyclictest0-21swapper/609:25:126
580992221,1cyclictest66650-21apt-get09:00:126
580992221,1cyclictest0-21swapper/609:05:116
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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