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2026-02-28 - 13:07
[ 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 #3

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 50 highest latencies:
System rack5slot3s.osadl.org (updated Sat Feb 28, 2026 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
286332238164,23sleep20-21swapper/219:06:322
285992236162,61sleep00-21swapper/019:06:070
286492202164,25sleep30-21swapper/319:06:463
286322200163,24sleep10-21swapper/119:06:311
28998998683,2cyclictest0-21swapper/321:35:053
28998996662,3cyclictest0-21swapper/319:18:203
313942570,7sleep011-21rcuc/019:15:010
133152570,11sleep121-21rcuc/122:10:251
207032360,4sleep12898899cyclictest20:00:211
258912350,1sleep20-21swapper/223:55:112
258912350,1sleep20-21swapper/223:55:112
2898899344,22cyclictest25513-21latency_hist23:55:011
2898899339,12cyclictest31384-21rt-features00:05:241
2898899332,22cyclictest6975-21chrt21:55:511
2898099338,11cyclictest22716-21perf22:35:000
2898099336,12cyclictest28054-21idleruntime-cro20:20:010
2898899328,17cyclictest29129-21processes00:00:231
2898899325,6cyclictest0-21swapper/119:23:211
28988993213,15cyclictest14158-21smart_sda19:45:221
2898899321,28cyclictest0-21swapper/121:24:351
2898899307,19cyclictest9784-21needreboot00:30:181
2898899307,12cyclictest2386-21cat20:35:021
2898899306,21cyclictest15492-21basename21:05:011
2898899306,12cyclictest6369-21latency_hist00:25:021
2898899299,17cyclictest2918-21munin-run21:50:011
2898899297,12cyclictest9745-21/usr/sbin/munin22:05:191
2898899296,12cyclictest3272-21ntp_states00:15:221
2898899295,5cyclictest88150irq/126-enp1s0-23:20:151
2898899291,20cyclictest23066-21chrt23:46:561
2898899291,12cyclictest21878-21cstates20:05:131
2898099291,13cyclictest24915-21perf22:40:010
28762290,6sleep07-21ksoftirqd/023:00:230
182382290,3sleep011-21rcuc/019:55:190
327662280,1sleep00-21swapper/019:15:170
2898899288,5cyclictest30491-21/usr/sbin/munin20:25:171
2898899284,11cyclictest6075-21latency_hist19:30:011
2898899283,21cyclictest25110-21gltestperf21:25:141
2898899283,11cyclictest12974-21perf00:40:011
28988992812,3cyclictest10203-21open_files20:50:211
28988992810,9cyclictest16668-21df22:20:121
28988992810,14cyclictest27672-21diskstats22:45:131
2898899279,15cyclictest3574-21ls23:05:011
2898899279,14cyclictest18619-21/usr/sbin/munin22:25:121
2898899275,14cyclictest7823-21cat22:00:111
2898899273,13cyclictest18213-21smart_sda23:35:231
2898899272,12cyclictest8277-21latency_hist19:35:011
28988992710,14cyclictest27113-21netstat20:15:201
118092270,4sleep22899299cyclictest23:20:242
2899899263,11cyclictest25127-21/usr/sbin/munin22:40:113
2898899269,14cyclictest28452-21cpuspeed_turbos20:20:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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