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2026-01-25 - 00:15
[ 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 #3, 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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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 rack3slot3s.osadl.org (updated Sat Jan 24, 2026 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2227085211654,57sleep30-21swapper/307:06:193
222733628654,10sleep10-21swapper/107:09:301
222706427863,9sleep20-21swapper/207:06:022
222713027452,6sleep00-21swapper/007:06:520
26625022310,4sleep12662499-21ssh12:05:261
2227505992925,2cyclictest0-21swapper/309:10:003
23462172261,3sleep00-21swapper/008:55:410
2227505992621,2cyclictest0-21swapper/309:55:003
2227505992523,1cyclictest0-21swapper/311:15:003
24865342240,2sleep00-21swapper/010:25:110
222750599232,13cyclictest2511876-21taskset10:40:113
2227505992321,1cyclictest0-21swapper/309:15:013
2227505992319,2cyclictest0-21swapper/311:25:153
2227505992319,2cyclictest0-21swapper/311:25:153
222750599221,17cyclictest2414969-21taskset09:42:023
26832452211,9sleep02357084-21diskmemload12:19:380
222750599219,8cyclictest2389999-21taskset09:27:423
2227505992118,1cyclictest0-21swapper/308:55:003
2227505992117,2cyclictest0-21swapper/311:45:253
2227505992117,2cyclictest0-21swapper/310:25:003
2227505992112,5cyclictest25347992sleep310:51:423
222750599211,16cyclictest0-21swapper/310:16:123
222750599211,15cyclictest0-21swapper/311:55:193
222750599210,18cyclictest0-21swapper/311:08:003
222750599210,17cyclictest2486302-21taskset10:25:023
23891432201,2sleep00-21swapper/009:26:360
222750599202,13cyclictest2458218-21taskset10:07:153
2227505992018,1cyclictest0-21swapper/308:05:023
2227505992017,1cyclictest0-21swapper/311:00:303
222750599201,2cyclictest0-21swapper/312:09:403
222750599201,16cyclictest0-21swapper/311:30:593
222750599201,15cyclictest0-21swapper/311:35:203
222750599201,15cyclictest0-21swapper/309:48:253
26987892190,16sleep02698803-21sh12:27:230
262209621910,2sleep1171rcu_preempt11:43:421
25168762191,9sleep02357084-21diskmemload10:40:400
2227505991916,1cyclictest0-21swapper/310:45:113
2227505991916,1cyclictest0-21swapper/307:20:123
2227505991915,2cyclictest0-21swapper/312:35:113
2227505991914,2cyclictest0-21swapper/311:45:013
222750599191,15cyclictest0-21swapper/312:34:263
222750599191,14cyclictest67150irq/132-enp1s0-TxRx-311:53:303
222750599191,14cyclictest2537483-21chrt10:55:013
222750599191,14cyclictest2239903-21taskset07:18:243
222750599191,14cyclictest0-21swapper/311:22:283
222750599191,14cyclictest0-21swapper/311:15:103
26839002182,4sleep12683919-21apt-get12:20:141
24323452181,11sleep12357084-21diskmemload09:52:181
222750599182,12cyclictest2689202-21taskset12:21:113
2227505991815,1cyclictest0-21swapper/309:20:493
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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