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2026-01-21 - 15:53
[ 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 #5, 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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  Intel
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, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack5slot4s.osadl.org (updated Wed Jan 21, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
286554223390,2sleep3481ktimers/308:59:583
286554223390,2sleep3481ktimers/308:59:583
290810222050,2sleep3471rcuc/309:40:073
305342121000,3chrt0-21swapper/212:05:072
30584962670,4sleep1281rcuc/112:10:071
2758236996552,9cyclictest3064769-21latency_hist12:20:001
2758231996344,16cyclictest286-21systemd-journal07:25:000
2758231995737,17cyclictest2859594-21ntpq08:50:080
2758236995646,7cyclictest2940601-21base6410:15:011
2758231995544,8cyclictest3015131-21latency_hist11:30:010
2758236995448,4cyclictest2785442-21kworker/u8:0+flush-8:008:50:011
2758236995448,4cyclictest2785442-21kworker/u8:0+flush-8:008:50:011
2758231995143,6cyclictest2930385-21latency_hist10:05:010
2758236994943,4cyclictest2854943-21kworker/u8:2+events_unbound09:49:581
2758231994913,26cyclictest2949325-21ntpq10:20:120
28211402480,2chrt653-21kworker/3:2+events08:15:003
2758236994839,6cyclictest3075052-21latency_hist12:30:011
275823199481,44cyclictest2805832-21true08:00:000
2758236994736,8cyclictest3079896-21latency_hist12:35:011
2758231994738,7cyclictest286-21systemd-journal08:45:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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