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2026-01-19 - 01:30
[ 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 Sun Jan 18, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
83151999757,64cyclictest311ktimers/209:05:012
831519996915,17cyclictest840961-21/usr/sbin/munin08:10:202
83151699682,26cyclictest24-21ksoftirqd/110:00:011
831519996559,4cyclictest311ktimers/212:40:002
831515996535,4cyclictest167350irq/118-8000000.ethernet-tx008:00:190
831515996460,2cyclictest0-21swapper/009:25:020
83151699639,31cyclictest22-21rcuc/112:25:021
831519996255,5cyclictest311ktimers/210:35:202
83151699585,16cyclictest0-21swapper/108:40:011
831516995810,27cyclictest22-21rcuc/107:15:011
83151999576,12cyclictest0-21swapper/209:10:022
831516995539,12cyclictest231ktimers/108:15:111
83151599551,51cyclictest0-21swapper/008:05:120
83151599545,11cyclictest23850irq/422-mmc110:35:010
831519995347,3cyclictest0-21swapper/207:15:012
831515995336,14cyclictest0-21swapper/011:55:170
83151599531,2cyclictest0-21swapper/009:45:000
831519995235,10cyclictest0-21swapper/212:30:012
831515995243,5cyclictest841605-21munin-plugin-st08:15:000
831516995131,14cyclictest231ktimers/107:40:101
831515995142,6cyclictest868206-21munin-plugin-st10:55:000
831515995040,6cyclictest869588-21phc2sys11:00:260
83151599502,2cyclictest0-21swapper/011:55:020
83151699482,16cyclictest22-21rcuc/110:20:011
831515994841,4cyclictest167350irq/118-8000000.ethernet-tx007:30:190
831519994726,17cyclictest311ktimers/210:50:132
831515994739,5cyclictest848592-21sh09:00:000
831515994739,5cyclictest833458-21sendmail07:20:000
831515994739,5cyclictest833458-21sendmail07:20:000
831515994739,4cyclictest167350irq/118-8000000.ethernet-tx011:30:220
831515994738,5cyclictest20650irq/252-8000000.ethernet10:25:190
831515994733,9cyclictest0-21swapper/009:15:260
831515994733,9cyclictest0-21swapper/009:15:260
831516994611,10cyclictest24-21ksoftirqd/110:45:011
831515994639,4cyclictest20650irq/252-8000000.ethernet07:30:010
831515994639,4cyclictest167350irq/118-8000000.ethernet-tx009:45:220
83151599461,42cyclictest0-21swapper/008:40:180
831519994535,6cyclictest839925-21munin-plugin-st08:05:002
83151999451,26cyclictest30-21rcuc/207:25:022
83151699455,14cyclictest22-21rcuc/111:25:011
831516994538,4cyclictest14-21rcu_preempt08:00:211
831515994538,4cyclictest167350irq/118-8000000.ethernet-tx011:10:190
831515994516,21cyclictest876101-21/usr/sbin/munin11:40:180
831519994428,11cyclictest311ktimers/210:30:112
831516994433,8cyclictest0-21swapper/109:25:281
831515994436,4cyclictest167350irq/118-8000000.ethernet-tx009:35:220
831515994436,4cyclictest167350irq/118-8000000.ethernet-tx009:35:220
831515994432,7cyclictest867500-21latency_hist10:50:010
83151599441,4cyclictest0-21swapper/011:20:010
831519994327,10cyclictest0-21swapper/210:20:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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