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2026-06-30 - 22:44

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 Jun 30, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2504422256174,26sleep20-21swapper/207:06:492
2506022235178,46sleep00-21swapper/007:09:040
2503982229167,50sleep30-21swapper/307:06:103
2503542229166,20sleep60-21swapper/607:05:326
2503932227167,18sleep70-21swapper/707:06:067
2505782226189,24sleep50-21swapper/507:08:445
2504702226168,18sleep10-21swapper/107:07:121
2505292219180,25sleep40-21swapper/407:08:044
25090299250,24cyclictest0-21swapper/609:20:116
25089899250,24cyclictest0-21swapper/509:15:205
25089299250,24cyclictest0-21swapper/310:35:103
25088199250,24cyclictest0-21swapper/010:50:170
25088199250,24cyclictest0-21swapper/010:50:170
250902992423,1cyclictest0-21swapper/608:35:016
25089699240,23cyclictest389049-21ntpq11:00:184
25089699240,1cyclictest0-21swapper/410:15:134
25089299240,23cyclictest365400-21ntpq10:20:183
25088399240,23cyclictest387564-21cat11:00:011
25088199240,23cyclictest253725-21perf07:15:010
25088199240,23cyclictest0-21swapper/011:40:130
25088199240,23cyclictest0-21swapper/007:35:130
25088199240,1cyclictest0-21swapper/012:05:110
250904992322,1cyclictest0-21swapper/709:50:137
250904992321,1cyclictest425587-21turbostat12:05:007
250904992321,1cyclictest387718-21apt-get11:00:137
25090499230,3cyclictest428533-21perf12:10:017
25090499230,22cyclictest428953-21apt-get12:10:117
25090499230,22cyclictest266693-21apt-get07:35:137
25090299230,22cyclictest0-21swapper/607:30:116
250898992322,1cyclictest0-21swapper/511:40:005
25089899230,22cyclictest431891-21apt-get12:15:105
25089899230,22cyclictest324163-21ntpq09:10:205
25089899230,22cyclictest281029-21munin-run08:00:015
250896992323,0cyclictest0-21swapper/411:15:184
250896992322,1cyclictest0-21swapper/410:10:134
250892992322,1cyclictest0-21swapper/311:20:013
250892992321,1cyclictest417175-21apt-get11:50:113
25089299230,22cyclictest368315-21ntpq10:25:193
25089299230,22cyclictest318181-21awk09:00:173
25089299230,22cyclictest309262-21ntpq08:45:173
25089299230,22cyclictest0-21swapper/309:50:183
25089299230,22cyclictest0-21swapper/309:35:123
25089299230,22cyclictest0-21swapper/307:55:003
25089299230,22cyclictest0-21swapper/307:20:003
25088799230,0cyclictest0-21swapper/211:20:122
25088399230,22cyclictest275567-21apt-get07:50:131
25088399230,22cyclictest0-21swapper/108:00:111
25088199230,22cyclictest390217-21cron11:05:000
25088199230,22cyclictest0-21swapper/010:50:000
25088199230,22cyclictest0-21swapper/008:00:010
250904992222,0cyclictest0-21swapper/711:25:187
250904992222,0cyclictest0-21swapper/709:15:127
250904992221,1cyclictest439117-21ntpq12:25:197
250904992221,1cyclictest331623-21apt-get09:25:127
250904992221,1cyclictest0-21swapper/711:20:117
250904992221,1cyclictest0-21swapper/710:55:127
250904992221,1cyclictest0-21swapper/710:40:007
250904992220,1cyclictest272627-21apt-get07:45:127
25090499220,22cyclictest0-21swapper/711:45:127
25090499220,22cyclictest0-21swapper/707:25:187
25090499220,21cyclictest257869-21apt-get07:20:127
25090499220,21cyclictest0-21swapper/711:50:127
25090499220,21cyclictest0-21swapper/711:40:137
25090499220,21cyclictest0-21swapper/710:40:127
25090499220,21cyclictest0-21swapper/710:30:137
25090499220,21cyclictest0-21swapper/710:00:117
25090499220,21cyclictest0-21swapper/709:20:117
25090499220,21cyclictest0-21swapper/708:55:037
25090499220,21cyclictest0-21swapper/707:10:127
25090499220,1cyclictest367042-21apt-get10:25:137
25090499220,1cyclictest0-21swapper/709:55:147
25090499220,1cyclictest0-21swapper/709:05:147
250902992221,1cyclictest334568-21apt-get09:30:116
250902992221,1cyclictest0-21swapper/611:50:126
250902992221,1cyclictest0-21swapper/609:10:186
250902992220,1cyclictest430346-21sh12:10:206
250902992220,1cyclictest0-21swapper/611:10:136
25090299220,22cyclictest0-21swapper/609:40:196
25090299220,22cyclictest0-21swapper/608:55:006
25090299220,21cyclictest0-21swapper/610:50:116
25090299220,21cyclictest0-21swapper/610:50:116
25090299220,21cyclictest0-21swapper/610:15:146
25090299220,21cyclictest0-21swapper/610:05:126
25090299220,21cyclictest0-21swapper/609:45:176
25090299220,21cyclictest0-21swapper/609:25:126
25090299220,21cyclictest0-21swapper/609:05:146
25090299220,21cyclictest0-21swapper/608:55:216
25090299220,21cyclictest0-21swapper/608:15:136
25090299220,1cyclictest0-21swapper/611:40:016
250898992222,0cyclictest0-21swapper/512:10:105
250898992222,0cyclictest0-21swapper/508:35:125
250898992221,1cyclictest0-21swapper/512:20:125
250898992220,1cyclictest393172-21munin-run11:10:005
25089899220,21cyclictest310570-21appstreamcli08:50:025
25089899220,21cyclictest0-21swapper/512:35:135
25089899220,21cyclictest0-21swapper/512:05:105
25089899220,21cyclictest0-21swapper/512:00:125
25089899220,21cyclictest0-21swapper/511:20:125
25089899220,21cyclictest0-21swapper/510:30:115
25089899220,21cyclictest0-21swapper/508:20:135
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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