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2026-02-26 - 20:30
[ 290.152] (II) VESA: driver for VESA chipsets: vesa

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 50 highest latencies:
System rack8slot4s.osadl.org (updated Thu Feb 26, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4455032234170,21sleep20-21swapper/207:09:062
4431262233175,45sleep70-21swapper/707:05:097
4453672218184,22sleep50-21swapper/507:07:085
4455502216183,22sleep10-21swapper/107:09:461
4455232216161,18sleep30-21swapper/307:09:233
4453622213180,21sleep00-21swapper/007:07:030
4454892212179,21sleep60-21swapper/607:08:546
4453572204174,19sleep40-21swapper/407:06:594
5996492990,0sleep1599628-21cpuspeed_turbos11:35:121
44581199270,22cyclictest0-21swapper/711:00:007
445797992623,2cyclictest553108-21apt-get10:15:132
44579799260,1cyclictest588073-21apt-get11:15:132
44581199250,24cyclictest573120-21perf10:50:007
44581199250,24cyclictest0-21swapper/709:10:137
445797992521,3cyclictest630926-21apt-get12:30:112
44579799250,1cyclictest0-21swapper/210:15:002
44579199250,24cyclictest0-21swapper/109:00:121
445811992419,4cyclictest0-21swapper/707:25:137
44581199240,21cyclictest0-21swapper/711:50:127
44581199240,20cyclictest0-21swapper/708:15:187
44580599240,24cyclictest593389-21sleep11:25:005
445803992420,3cyclictest613366-21systemctl12:00:004
445799992422,1cyclictest610923-21apt-get11:55:113
44579999240,23cyclictest460709-21perf07:35:003
445797992420,3cyclictest538407-21munin-run09:50:002
445791992423,1cyclictest0-21swapper/108:15:121
44579199240,23cyclictest0-21swapper/110:50:111
445811992319,3cyclictest0-21swapper/708:00:127
44581199230,22cyclictest582369-21apt-get11:05:127
44581199230,22cyclictest0-21swapper/709:15:117
445808992321,1cyclictest573532-21apt-get10:50:116
44580899230,22cyclictest452158-21awk07:20:006
44580899230,22cyclictest452158-21awk07:20:006
44580899230,21cyclictest0-21swapper/608:50:126
445805992322,1cyclictest633780-21apt-get12:35:125
44580399230,23cyclictest0-21swapper/412:15:004
44580399230,23cyclictest0-21swapper/412:15:004
44580399230,23cyclictest0-21swapper/407:30:554
44580399230,22cyclictest623654-21ntpq12:15:194
44580399230,22cyclictest457845-21grep07:30:004
44580399230,22cyclictest0-21swapper/409:45:004
44580399230,22cyclictest0-21swapper/409:35:114
445799992321,1cyclictest613798-21apt-get12:00:133
445799992321,1cyclictest581683-21turbostat11:05:003
44579999230,22cyclictest584809-21perf11:10:003
44579999230,22cyclictest469729-21apt-get07:50:153
44579999230,22cyclictest0-21swapper/309:50:003
44579799230,22cyclictest509831-21systemctl09:00:012
445791992322,1cyclictest605224-21apt-get11:45:121
44579199230,22cyclictest0-21swapper/110:45:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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