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2026-02-02 - 19:08
[ 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 #e, 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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot4s.osadl.org (updated Mon Feb 02, 2026 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3057417994436,5cyclictest3114953-21latency_hist08:05:002
3057421994034,4cyclictest3099849-21diskstats07:50:143
3057421993834,3cyclictest3047239-21kworker/u8:0+flush-259:007:25:233
3057421993833,3cyclictest3125937-21/usr/sbin/munin08:15:143
3057411993832,4cyclictest3259027-21ntpq10:20:200
3057417993732,3cyclictest3229304-21apt-get09:55:132
3057417993732,3cyclictest3229304-21apt-get09:55:132
3057417993629,5cyclictest252-21systemd-journal07:20:002
3057413993630,5cyclictest3285954-21ntpq10:50:161
3057421993429,4cyclictest3254755-21kworker/u8:2+flush-259:010:45:003
3057413993430,3cyclictest3115217-21apt-get08:05:111
3057417993328,3cyclictest3313007-21latency_hist11:20:012
3057417993227,4cyclictest252-21systemd-journal11:15:012
3057411993228,3cyclictest3254755-21kworker/u8:2+flush-259:011:35:160
3057421993126,3cyclictest3083852-21apt-get07:35:133
3057421993125,4cyclictest3317283-21ntpq11:20:233
3057421993124,5cyclictest3156068-21ntpq08:40:213
3057421993124,5cyclictest252-21systemd-journal09:00:003
3057411993127,3cyclictest3047239-21kworker/u8:0+events_unbound07:45:140
3057411993124,5cyclictest3354254-21latency_hist12:00:000
3057413993024,4cyclictest3203302-21latency_hist09:30:001
3057411993026,3cyclictest3254755-21kworker/u8:2+flush-259:010:50:130
3057421992921,5cyclictest252-21systemd-journal09:35:003
3057417992926,2cyclictest3047239-21kworker/u8:0+flush-259:007:50:172
3057411992925,3cyclictest3125724-21kworker/u8:0+events_unbound08:40:220
3057411992924,4cyclictest3302639-21kworker/u8:4+flush-259:011:25:160
3057411992922,5cyclictest3264144-21ntpq10:25:220
3057421992823,4cyclictest252-21systemd-journal07:23:343
3057421992823,3cyclictest3323378-21kworker/u8:3+events_unbound12:10:223
3057417992824,3cyclictest3287500-21/usr/sbin/munin10:55:142
3057413992822,4cyclictest3281159-21cp10:45:011
3057411992825,2cyclictest3083818-21kworker/u8:2+events_unbound08:35:140
3057411992823,3cyclictest3302639-21kworker/u8:4+flush-259:011:15:210
3057411992822,4cyclictest3275875-21diskstats10:40:140
3057411992820,6cyclictest3192109-21ntpq09:15:210
3057421992722,4cyclictest3083818-21kworker/u8:2+flush-259:007:40:223
3057417992721,4cyclictest3177556-21latency_hist09:05:012
3057413992721,4cyclictest3369835-21latency_hist12:15:001
3057411992723,3cyclictest3333605-21kworker/u8:0+flush-259:012:00:210
3057411992722,3cyclictest252-21systemd-journal10:13:340
3057413992623,2cyclictest3254755-21kworker/u8:2+flush-259:011:55:161
3057413992622,3cyclictest3073574-21apt-get07:25:121
3057411992623,2cyclictest3047239-21kworker/u8:0+events_unbound07:15:240
3057411992622,3cyclictest3083818-21kworker/u8:2+flush-259:009:05:170
3057411992622,3cyclictest3083818-21kworker/u8:2+flush-259:007:40:250
3057411992621,3cyclictest3083818-21kworker/u8:2+events_unbound08:10:240
3057411992619,5cyclictest3202477-21ntpq09:25:230
3057421992521,3cyclictest3344170-21apt-get11:50:133
3057421992521,3cyclictest3218738-21kworker/u8:3+flush-259:010:05:203
3057421992521,3cyclictest3193018-21kworker/u8:1+flush-259:009:25:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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