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2026-05-12 - 19:44

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 Tue May 12, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20297132243171,22sleep70-21swapper/707:07:037
20296152239168,22sleep30-21swapper/307:05:373
20273942238166,21sleep10-21swapper/107:05:041
20296192227189,25sleep50-21swapper/507:05:395
20297032214181,22sleep60-21swapper/607:06:536
20296522212177,23sleep20-21swapper/207:06:092
20297242211176,22sleep00-21swapper/007:07:120
20299192207175,22sleep40-21swapper/407:09:574
203012799260,22cyclictest2094502-21ntpq08:55:180
203013799250,24cyclictest2202436-21apt-get12:00:134
203013799250,24cyclictest2125265-21latency_hist09:50:014
203013399250,24cyclictest0-21swapper/312:15:193
2030129992523,1cyclictest0-21swapper/108:25:001
203012799250,24cyclictest2119380-21perf09:40:000
203012799250,24cyclictest2066182-21awk08:10:010
2030144992423,1cyclictest0-21swapper/708:35:117
203014499240,24cyclictest0-21swapper/712:20:117
203014499240,23cyclictest0-21swapper/708:00:137
203014199240,3cyclictest2215548-21ntpq12:20:176
203014199240,24cyclictest2116461-21appstreamcli09:35:016
203013999240,23cyclictest0-21swapper/512:20:115
203013799240,23cyclictest2045952-21apt-get07:35:134
2030133992423,1cyclictest0-21swapper/311:20:123
203013399240,23cyclictest0-21swapper/310:55:123
203013399240,23cyclictest0-21swapper/310:00:133
203013399240,23cyclictest0-21swapper/309:20:183
2030132992423,1cyclictest2155238-21apt-get10:40:142
2030132992422,1cyclictest0-21swapper/209:20:122
203013299240,24cyclictest0-21swapper/209:50:002
203013299240,23cyclictest0-21swapper/210:50:122
2030129992423,1cyclictest2116423-21apt-get09:35:001
203012999240,23cyclictest2204939-21cron12:05:001
203012999240,23cyclictest0-21swapper/112:10:171
203012999240,23cyclictest0-21swapper/109:35:131
203012999240,23cyclictest0-21swapper/109:00:191
203012999240,0cyclictest0-21swapper/112:25:161
2030127992422,2cyclictest2150677-21ntpq10:30:180
203012799240,24cyclictest2131655-21apt-get10:00:130
203012799240,23cyclictest2119821-21apt-get09:40:110
203012799240,23cyclictest0-21swapper/007:50:130
2030144992322,1cyclictest2184697-21apt-get11:30:117
2030144992322,1cyclictest0-21swapper/711:50:127
2030144992322,1cyclictest0-21swapper/707:45:207
203014499230,23cyclictest0-21swapper/710:45:127
203014499230,22cyclictest0-21swapper/710:20:117
203014499230,22cyclictest0-21swapper/709:50:127
203014499230,22cyclictest0-21swapper/709:40:127
203014499230,1cyclictest0-21swapper/710:15:137
203014499230,1cyclictest0-21swapper/708:50:197
2030141992322,1cyclictest2190607-21apt-get11:40:126
2030141992321,1cyclictest2134596-21apt-get10:05:136
2030141992321,1cyclictest0-21swapper/611:15:146
203014199230,1cyclictest2125341-21appstreamcli09:50:026
2030139992323,0cyclictest0-21swapper/508:35:115
2030139992321,1cyclictest2172903-21apt-get11:10:115
203013999230,22cyclictest2072372-21tar08:20:015
203013999230,22cyclictest0-21swapper/510:45:115
203013999230,22cyclictest0-21swapper/510:20:125
2030137992323,0cyclictest0-21swapper/411:55:214
203013799230,23cyclictest2107580-21awk09:19:594
203013799230,23cyclictest1-21systemd11:55:004
203013799230,22cyclictest0-21swapper/411:10:124
2030133992322,1cyclictest2194881-21ntpq11:45:183
2030133992322,1cyclictest0-21swapper/308:20:103
203013399230,23cyclictest0-21swapper/310:25:183
203013399230,22cyclictest2140477-21apt-get10:15:123
203013399230,22cyclictest0-21swapper/312:25:123
203013399230,22cyclictest0-21swapper/310:30:113
203013399230,1cyclictest2196496-21apt-get11:50:123
2030132992322,1cyclictest2168417-21ntpq11:00:202
2030132992322,1cyclictest2168417-21ntpq11:00:202
2030132992322,1cyclictest0-21swapper/208:50:202
203013299230,22cyclictest0-21swapper/212:35:122
203013299230,22cyclictest0-21swapper/211:20:122
203013299230,1cyclictest0-21swapper/208:20:032
2030129992323,0cyclictest0-21swapper/108:10:111
2030129992321,1cyclictest0-21swapper/109:40:171
203012999230,23cyclictest0-21swapper/110:55:121
203012999230,22cyclictest2220107-21apt-get12:30:121
203012999230,22cyclictest0-21swapper/111:55:151
203012999230,22cyclictest0-21swapper/111:35:131
203012999230,22cyclictest0-21swapper/109:15:041
203012999230,22cyclictest0-21swapper/107:50:131
203012999230,0cyclictest0-21swapper/111:40:141
2030127992320,3cyclictest0-21swapper/009:45:120
2030127992319,4cyclictest0-21swapper/008:55:000
203012799230,22cyclictest0-21swapper/010:05:140
203012799230,22cyclictest0-21swapper/007:35:140
203012799230,0cyclictest0-21swapper/010:10:130
2030144992221,1cyclictest2178812-21apt-get11:20:127
2030144992221,1cyclictest2110930-21apt-get09:25:127
2030144992221,1cyclictest2057757-21apt-get07:55:117
2030144992221,1cyclictest0-21swapper/711:55:037
2030144992221,1cyclictest0-21swapper/711:10:127
2030144992221,1cyclictest0-21swapper/709:35:027
2030144992221,1cyclictest0-21swapper/707:30:157
203014499220,22cyclictest0-21swapper/709:10:187
203014499220,21cyclictest0-21swapper/711:40:127
203014499220,21cyclictest0-21swapper/709:30:137
203014499220,21cyclictest0-21swapper/709:20:207
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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