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2026-06-11 - 14:54

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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 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 rack0slot6s.osadl.org (updated Thu Jun 11, 2026 00:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
397792499667,37cyclictest0-21swapper/320:38:1213
3977979995221,30cyclictest0-21swapper/1920:26:3011
3977913995228,1cyclictest3840310-21VizCompositorTh23:20:140
3977913994949,0cyclictest0-21swapper/022:24:490
3977979994821,25cyclictest0-21swapper/1921:01:2311
3977931994846,1cyclictest3841522-21Compositor20:52:1015
3977913994848,0cyclictest0-21swapper/019:43:180
3977924994722,3cyclictest3840264-21chrome00:39:0913
208398470,45rtkit-daemon0-21swapper/1119:06:183
397735724641,3sleep90-21swapper/919:09:4519
3977977994515,28cyclictest18279-21kworker/u80:2+i91523:23:3310
3977913994544,0cyclictest0-21swapper/019:48:030
3977913994542,2cyclictest16-21ksoftirqd/021:15:120
3977979994419,4cyclictest4032843-40tracker-miner-f20:03:0911
3977979994415,28cyclictest0-21swapper/1920:22:0211
3977977994416,4cyclictest3840310-21VizCompositorTh20:16:3010
397795299449,27cyclictest115448-40tracker-miner-f00:39:404
3977952994410,27cyclictest100343-40tracker-miner-f00:24:244
397795299437,28cyclictest89619-40tracker-miner-f00:11:304
3977947994315,26cyclictest4057487-21kworker/u80:3+i91521:26:442
3977947994315,26cyclictest4057487-21kworker/u80:3+i91521:26:442
3977944994314,28cyclictest3840264-21chrome22:01:5519
3977941994315,28cyclictest4098750-21kworker/u80:5+i91522:03:0518
397791799430,0cyclictest0-21swapper/100:10:061
3977913994318,3cyclictest3840264-21chrome21:29:290
3977913994318,3cyclictest3840264-21chrome21:29:280
3977979994219,23cyclictest4113111-40tracker-miner-f21:21:5211
3977979994219,23cyclictest4113111-40tracker-miner-f21:21:5211
3977973994212,28cyclictest3998943-21kworker/u80:5+i91520:15:259
3977967994214,27cyclictest1591irq_work/1520:22:137
3977963994214,27cyclictest1501irq_work/1422:01:236
397795299420,16cyclictest94488-40tracker-miner-f00:15:504
397711224236,3sleep60-21swapper/619:08:4216
3977979994126,11cyclictest3761423-21Xwayland19:46:2211
397797999410,32cyclictest53486-40tracker-miner-f23:35:4711
3977969994113,27cyclictest38394-21kworker/u80:5+i91500:26:408
3977969994113,27cyclictest38394-21kworker/u80:5+i91500:26:408
3977969994111,29cyclictest0-21swapper/1620:25:158
3977967994114,27cyclictest1591irq_work/1521:19:367
3977967994114,27cyclictest1591irq_work/1520:45:077
3977967994114,27cyclictest1591irq_work/1520:13:587
3977967994114,27cyclictest1591irq_work/1519:45:577
3977963994114,27cyclictest1501irq_work/1423:18:306
3977963994114,27cyclictest1501irq_work/1423:07:586
3977963994114,27cyclictest1501irq_work/1422:33:206
3977963994114,27cyclictest1501irq_work/1400:00:506
3977963994114,26cyclictest1501irq_work/1422:25:266
3977963994114,26cyclictest1501irq_work/1422:15:106
3977963994113,27cyclictest1501irq_work/1423:30:166
397794199418,31cyclictest51435-21kworker/u80:3+i91500:29:3818
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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