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2026-02-22 - 22:28
[ 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
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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 Sun Feb 22, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
229825521850,4sleep30-21swapper/307:31:143
25037912850,3chrt584-21kworker/3:2-events11:01:023
2272271995233,16cyclictest274-21systemd-journal10:45:002
2272269995038,11cyclictest2497322-21sshd10:51:131
2272266995041,6cyclictest2418326-21latency_hist09:35:010
2272271994929,7cyclictest274-21systemd-journal09:36:122
2272269994741,4cyclictest2218793-21kworker/u8:0+flush-8:009:26:141
2272269994639,4cyclictest398-21smartd08:15:571
2272266994636,7cyclictest2526984-40mandb11:21:130
2272269994534,8cyclictest1414115-21kworker/u8:3+flush-8:007:51:171
2272266994539,4cyclictest2319112-21kworker/u8:1+flush-8:008:16:000
2272269994438,4cyclictest2373977-21kworker/u8:2+flush-8:008:51:141
2272266994333,7cyclictest2572691-21latency_hist12:10:010
2272269994237,4cyclictest2218793-21kworker/u8:0+flush-8:008:01:011
2272269994029,8cyclictest274-21systemd-journal11:20:121
2272266994035,4cyclictest2218793-21kworker/u8:0+flush-8:008:21:010
2272269993934,3cyclictest1414115-21kworker/u8:3+flush-8:007:16:131
2272266993933,4cyclictest1-21systemd10:51:120
2272269993831,5cyclictest2473568-21kworker/u8:2+flush-8:010:41:141
2272269993829,7cyclictest2542919-21/usr/sbin/munin11:41:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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