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2026-02-21 - 08:19
[ 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 #6

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 50 highest latencies:
System rackeslot6s.osadl.org (updated Sat Feb 21, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
117736399906,9cyclictest1228721-21apt-get00:10:010
117736399759,61cyclictest0-21swapper/023:35:260
117736399733,6cyclictest1204023-21grep21:40:290
1177363997231,3cyclictest20850irq/208-8000000.ethernet22:50:260
1177363997030,36cyclictest0-21swapper/019:54:590
117736399702,63cyclictest1186891-21unixbench_multi20:00:260
1177363996829,6cyclictest0-21swapper/022:55:290
1177363996530,4cyclictest0-21swapper/022:15:260
1177363996434,4cyclictest167350irq/118-8000000.ethernet-tx000:10:010
1177363996432,5cyclictest1210803-21unixbench_multi22:20:270
1177363996432,5cyclictest1210803-21unixbench_multi22:20:270
117736399641,38cyclictest0-21swapper/023:30:220
117736699635,37cyclictest0-21swapper/120:05:011
1177363996329,31cyclictest20850irq/208-8000000.ethernet21:15:220
117736399632,6cyclictest1205771-21grep21:55:010
117736399631,27cyclictest0-21swapper/020:35:010
117736399631,27cyclictest0-21swapper/020:35:010
117736699629,21cyclictest22-21rcuc/119:55:021
1177363996234,25cyclictest1204906-21munin-plugin-st21:50:000
1177363996123,10cyclictest0-21swapper/000:35:160
1177366996040,15cyclictest231ktimers/123:15:131
1177366996040,15cyclictest231ktimers/123:15:131
1177363995948,6cyclictest131ktimers/022:00:110
117736399591,38cyclictest1180960-21sed19:25:260
1177366995736,15cyclictest231ktimers/119:40:111
1177366995736,15cyclictest231ktimers/119:40:111
1177366995723,3cyclictest1226586-21kernelversion23:55:231
1177367995537,13cyclictest311ktimers/220:15:112
1177363995447,4cyclictest0-21swapper/021:30:120
1177363995432,2cyclictest200-21pr/ttyS220:39:590
117736799521,11cyclictest0-21swapper/220:20:182
117736799521,11cyclictest0-21swapper/220:20:182
1177366995219,12cyclictest14-21rcu_preempt23:45:011
1177363995142,5cyclictest167350irq/118-8000000.ethernet-tx000:00:250
1177367995034,11cyclictest311ktimers/200:25:142
117736799501,2cyclictest0-21swapper/222:30:012
1177367994945,2cyclictest0-21swapper/200:00:022
1177367994942,4cyclictest1218500-21munin-plugin-st23:10:002
1177367994931,13cyclictest0-21swapper/219:30:002
1177367994931,12cyclictest311ktimers/223:45:142
1177363994940,5cyclictest167350irq/118-8000000.ethernet-tx020:30:010
1177367994837,5cyclictest1230494-21sh00:20:002
1177367994730,12cyclictest311ktimers/221:20:112
117736799471,20cyclictest0-21swapper/223:55:002
117736799471,20cyclictest0-21swapper/200:10:012
1177366994733,8cyclictest0-21swapper/100:00:281
1177367994614,2cyclictest0-21swapper/222:10:282
1177366994628,10cyclictest0-21swapper/100:35:001
1177363994637,5cyclictest167350irq/118-8000000.ethernet-tx021:00:170
1177363994614,25cyclictest0-21swapper/019:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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