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2026-02-17 - 23:51
[ 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 #a, slot #5

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 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 20 highest latencies:
System rackaslot5s.osadl.org (updated Tue Feb 17, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811100,0rcu_preempt3-21ksoftirqd/011:33:330
811090,0rcu_preempt19-21ksoftirqd/111:56:181
811050,0rcu_preempt3-21ksoftirqd/012:29:070
811050,0rcu_preempt19-21ksoftirqd/111:31:281
81990,0rcu_preempt19-21ksoftirqd/110:44:171
81950,0rcu_preempt19-21ksoftirqd/107:39:271
81920,0rcu_preempt19-21ksoftirqd/110:09:411
81910,0rcu_preempt19-21ksoftirqd/111:49:501
81850,0rcu_preempt19-21ksoftirqd/107:19:261
81850,0rcu_preempt19-21ksoftirqd/107:19:261
81820,0rcu_preempt25190-1kworker/1:0H09:54:461
81820,0rcu_preempt19-21ksoftirqd/112:03:321
81810,0rcu_preempt3-21ksoftirqd/011:46:170
81790,0rcu_preempt19-21ksoftirqd/111:39:391
81790,0rcu_preempt19-21ksoftirqd/109:59:361
81790,0rcu_preempt19-21ksoftirqd/107:19:261
81770,0rcu_preempt3-21ksoftirqd/011:59:530
81750,0rcu_preempt3-21ksoftirqd/010:20:080
81730,0rcu_preempt19-21ksoftirqd/112:13:231
81700,0rcu_preempt18529-21apt-get08:34:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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