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2026-02-21 - 11:40
[ 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 #7, 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 20 highest latencies:
System rack7slot4s.osadl.org (updated Sat Feb 21, 2026 00:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3228099644,48cyclictest15509-21ssh22:20:131
3229599620,43cyclictest22289-21ssh00:30:152
3229599620,43cyclictest22289-21ssh00:30:142
3226999624,45cyclictest11816-21ssh22:00:120
3226999573,11cyclictest131rcu_preempt00:00:120
3226999553,43cyclictest983-21ssh22:30:120
3226999553,42cyclictest8165-21ssh23:10:120
3226999552,44cyclictest22435-21ssh21:30:120
3229599544,44cyclictest14607-21apt-get19:25:132
3229599531,46cyclictest13799-21apt-get21:05:112
3226999532,6cyclictest131rcu_preempt00:05:120
3228099521,9cyclictest19024-21ssh22:40:131
32269995231,18cyclictest12-21ksoftirqd/023:55:120
3229599512,41cyclictest27956-21apt-get22:45:122
3229599510,45cyclictest4143-21apt-get20:55:132
3229599481,40cyclictest15363-21apt-get23:50:122
3229599471,40cyclictest31757-21apt-get20:50:132
3229599470,42cyclictest0-21swapper/222:00:122
3228099474,34cyclictest1002-21ssh00:00:121
3229599461,38cyclictest0-21swapper/223:05:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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