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2026-04-16 - 04:02

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 Apr 16, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13804182240176,51sleep40-21swapper/419:06:374
13805732237174,50sleep20-21swapper/219:08:522
13804352231173,18sleep30-21swapper/319:06:533
13804862227172,18sleep70-21swapper/719:07:367
13804942215182,21sleep60-21swapper/619:07:436
13805632214183,19sleep10-21swapper/119:08:431
13806192208177,20sleep00-21swapper/019:09:310
13805582205177,18sleep50-21swapper/519:08:395
138088799250,24cyclictest0-21swapper/320:50:123
1380883992515,5cyclictest1060-21cron21:25:002
138088399250,24cyclictest0-21swapper/221:35:112
138089899247,0cyclictest0-21swapper/722:47:177
1380898992422,1cyclictest1448214-21apt-get21:05:137
1380898992422,1cyclictest0-21swapper/723:00:137
1380895992422,1cyclictest0-21swapper/622:35:106
138089299241,23cyclictest1514269-21cron23:00:005
138088799242,1cyclictest0-21swapper/323:50:003
138088799240,22cyclictest1523282-21apt-get23:15:123
138088199240,23cyclictest1436046-21dump-pmu-power20:45:011
138088199240,1cyclictest0-21swapper/121:45:001
1380877992423,0cyclictest0-21swapper/021:00:120
1380877992422,1cyclictest0-21swapper/021:15:110
138089899230,22cyclictest1418639-21awk20:15:017
1380895992321,1cyclictest1562910-21munin-run00:24:596
138089599230,22cyclictest1571731-21munin-run00:40:006
138089599230,22cyclictest1551896-21apt-get00:05:116
138089599230,22cyclictest1551896-21apt-get00:05:116
138089599230,22cyclictest0-21swapper/621:15:116
1380892992323,0cyclictest0-21swapper/520:30:125
138089299230,1cyclictest1485881-21apt-get22:10:105
138088999230,0cyclictest0-21swapper/421:35:114
138088799230,22cyclictest0-21swapper/323:25:113
138088399230,22cyclictest1441662-21apt-get20:53:462
138088399230,22cyclictest1401920-21apt-get19:45:122
138088399230,22cyclictest0-21swapper/220:15:122
138088399230,1cyclictest0-21swapper/219:30:012
1380881992321,1cyclictest0-21swapper/123:20:001
1380881992321,1cyclictest0-21swapper/120:05:011
138088199230,22cyclictest0-21swapper/121:35:101
138088199230,22cyclictest0-21swapper/121:15:121
1380877992321,1cyclictest1482387-21apt-config22:04:590
138087799230,1cyclictest1549041-21apt-get00:00:100
138087799230,1cyclictest1549041-21apt-get00:00:090
1380898992220,1cyclictest0-21swapper/719:50:117
138089899220,21cyclictest1529011-21apt-get23:25:117
138089899220,21cyclictest0-21swapper/700:25:117
138089899220,1cyclictest1548588-21awk00:00:007
138089899220,1cyclictest1548588-21awk00:00:007
138089899220,1cyclictest0-21swapper/721:30:127
1380895992222,0cyclictest0-21swapper/623:05:126
1380895992221,1cyclictest0-21swapper/622:55:126
1380895992221,1cyclictest0-21swapper/621:00:006
1380895992220,1cyclictest1468059-21idleruntime-cro21:40:006
138089599221,20cyclictest664-21in:imuxsock20:35:016
138089599220,21cyclictest0-21swapper/620:20:126
138089599220,21cyclictest0-21swapper/600:00:006
138089599220,21cyclictest0-21swapper/600:00:006
1380892992222,0cyclictest0-21swapper/522:05:015
138089299220,2cyclictest1412932-21awk20:05:015
138089299220,22cyclictest1562951-21systemctl00:25:005
138089299220,21cyclictest1404770-21apt-get19:50:105
138089299220,21cyclictest1390491-21apt-get19:25:125
138089299220,21cyclictest1380868-21cyclictest21:55:135
138089299220,21cyclictest0-21swapper/500:30:145
138089299220,21cyclictest0-21swapper/500:25:105
1380889992221,0cyclictest0-21swapper/423:25:114
1380889992220,1cyclictest0-21swapper/420:25:124
138088999220,22cyclictest1384763-21apt-get19:15:114
138088999220,22cyclictest1384763-21apt-get19:15:114
138088999220,21cyclictest1500427-21apt-get22:35:124
138088999220,21cyclictest0-21swapper/423:45:114
138088999220,21cyclictest0-21swapper/422:50:104
138088999220,21cyclictest0-21swapper/422:30:124
138088999220,21cyclictest0-21swapper/421:55:124
138088999220,21cyclictest0-21swapper/400:30:134
138088999220,1cyclictest1392926-21munin-run19:30:014
1380887992222,0cyclictest0-21swapper/321:45:113
1380887992222,0cyclictest0-21swapper/320:45:103
138088799220,21cyclictest0-21swapper/319:25:133
138088799220,1cyclictest1531865-21apt-get23:30:113
138088799220,1cyclictest1421770-21awk20:20:013
1380883992221,1cyclictest1545728-21munin-run23:55:002
1380883992220,1cyclictest1520016-21munin-run23:10:002
138088399220,1cyclictest0-21swapper/220:15:012
138088399220,0cyclictest0-21swapper/219:15:112
138088399220,0cyclictest0-21swapper/219:15:102
1380881992221,1cyclictest0-21swapper/121:50:001
1380881992220,1cyclictest1545728-21munin-run23:55:001
138088199220,21cyclictest1534716-21apt-get23:35:101
138088199220,21cyclictest0-21swapper/123:55:111
138088199220,21cyclictest0-21swapper/123:55:111
138088199220,21cyclictest0-21swapper/121:30:011
138088199220,21cyclictest0-21swapper/120:15:021
138088199220,21cyclictest0-21swapper/120:05:111
138088199220,21cyclictest0-21swapper/119:15:111
138088199220,21cyclictest0-21swapper/119:15:101
138088199220,21cyclictest0-21swapper/100:05:111
138088199220,21cyclictest0-21swapper/100:05:111
138088199220,1cyclictest0-21swapper/119:35:121
1380877992221,1cyclictest0-21swapper/023:45:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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