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2026-02-06 - 23:14
[ 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 100 highest latencies:
System rack3slot3s.osadl.org (updated Fri Feb 06, 2026 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34377872128113,9sleep10-21swapper/107:07:511
3437611211552,58sleep30-21swapper/307:05:373
343302628457,10sleep20-21swapper/207:05:112
343771728156,19sleep00-21swapper/007:06:590
3438106992926,1cyclictest0-21swapper/309:26:573
36496762271,11sleep03566712-21diskmemload09:58:140
3438106992722,2cyclictest0-21swapper/311:55:173
34987092261,12sleep03498925-21cut08:05:140
34987092261,12sleep03498925-21cut08:05:130
343810699262,18cyclictest36829702sleep310:17:523
343810699260,15cyclictest36924262sleep310:24:233
343810699244,14cyclictest3784312-21sleep11:20:003
3438106992419,3cyclictest0-21swapper/310:25:213
343810699240,15cyclictest3734404-21taskset10:50:153
36230792231,3sleep00-21swapper/009:41:180
343810699232,15cyclictest3575962-21taskset09:15:143
3438106992321,1cyclictest0-21swapper/311:06:573
3438106992319,2cyclictest0-21swapper/309:20:193
343810699225,14cyclictest0-21swapper/309:54:493
3438106992220,1cyclictest0-21swapper/310:05:133
3438106992220,1cyclictest0-21swapper/310:05:123
3438106992219,1cyclictest0-21swapper/309:02:573
343810699217,2cyclictest0-21swapper/311:44:293
3438106992118,1cyclictest0-21swapper/311:46:573
3438106992118,1cyclictest0-21swapper/310:36:563
3438106992118,1cyclictest0-21swapper/309:46:573
3438106992118,1cyclictest0-21swapper/307:20:183
3438106992117,2cyclictest0-21swapper/312:33:563
3438106992117,2cyclictest0-21swapper/312:23:043
3438106992116,2cyclictest0-21swapper/312:12:353
3438106992115,4cyclictest67150irq/132-enp1s0-TxRx-309:43:213
343810699211,2cyclictest0-21swapper/311:04:103
3438106992111,7cyclictest3815159-21taskset11:35:533
343810699211,16cyclictest3842376-21taskset11:53:203
3438106992110,8cyclictest3706514-21taskset10:33:003
3438106992110,7cyclictest3790410-21taskset11:21:423
343810699205,11cyclictest0-21swapper/311:30:123
343810699201,7cyclictest0-21swapper/310:46:163
3438106992017,1cyclictest0-21swapper/312:02:563
3438106992017,1cyclictest0-21swapper/308:40:193
3438106992016,2cyclictest0-21swapper/307:40:113
3438106992015,3cyclictest0-21swapper/312:16:223
3438106992015,2cyclictest0-21swapper/312:05:233
3438106992014,3cyclictest0-21swapper/310:57:393
343810699201,14cyclictest3798028-21chrt11:25:313
343810699201,13cyclictest0-21swapper/312:35:113
343810699200,15cyclictest3672456-21taskset10:10:233
38769982196,8sleep23877060-21awk12:15:182
38722862190,4sleep23872297-21ssh12:14:492
343810699195,2cyclictest0-21swapper/312:26:573
343810699194,12cyclictest0-21swapper/309:31:523
3438106991917,1cyclictest0-21swapper/309:35:063
3438106991916,1cyclictest0-21swapper/310:01:463
3438106991916,1cyclictest0-21swapper/308:58:573
3438106991916,1cyclictest0-21swapper/308:10:253
3438106991916,1cyclictest0-21swapper/307:35:263
3438106991916,1cyclictest0-21swapper/307:10:143
3438106991915,2cyclictest0-21swapper/309:57:523
3438106991915,2cyclictest0-21swapper/309:11:313
343810699191,17cyclictest0-21swapper/310:42:133
343810699191,13cyclictest3773279-21taskset11:11:203
38804952181,11sleep03566712-21diskmemload12:19:210
38337602181,11sleep03566712-21diskmemload11:48:300
37572432181,4sleep03566712-21diskmemload11:02:310
37490202181,8sleep13566712-21diskmemload10:57:561
36920852181,8sleep23692096-21ssh10:23:542
36723192181,6sleep23672455-21/usr/sbin/munin10:10:232
36648762181,6sleep13566712-21diskmemload10:06:051
36648762181,6sleep13566712-21diskmemload10:06:051
34864282181,11sleep03486469-21ntpq07:50:190
343810699183,10cyclictest3502694-21taskset08:05:243
343810699183,10cyclictest3502694-21taskset08:05:233
343810699183,10cyclictest3450193-21taskset07:15:303
343810699182,11cyclictest3524715-21taskset08:30:043
3438106991816,1cyclictest0-21swapper/307:25:213
3438106991815,1cyclictest0-21swapper/309:08:573
3438106991815,1cyclictest0-21swapper/309:08:563
3438106991815,1cyclictest0-21swapper/307:56:563
343810699181,14cyclictest0-21swapper/307:50:193
343810699180,15cyclictest0-21swapper/308:15:153
38674452171,10sleep03566712-21diskmemload12:08:150
38438062171,1sleep10-21swapper/111:55:131
37307932171,12sleep23730807-21ssh10:46:022
36059462170,10sleep03566712-21diskmemload09:30:520
35828512171,10sleep00-21swapper/009:19:010
35031912171,4sleep1582-21gdbus08:10:001
35031912171,4sleep1582-21gdbus08:10:001
34432792171,10sleep03443300-21munin-run07:15:000
343810699173,11cyclictest15850irq/127-ahci[0000:00:17.0]08:50:003
3438106991714,1cyclictest0-21swapper/308:25:233
3438106991714,1cyclictest0-21swapper/307:32:363
343810699171,13cyclictest0-21swapper/307:45:123
343810699171,10cyclictest3530522-21taskset08:35:143
343810699170,14cyclictest0-21swapper/308:23:083
38879792161,9sleep23566712-21diskmemload12:22:552
385105821611,2sleep23708135-21kworker/2:2+events_freezable11:58:502
38396562161,8sleep03839715-21ntpq11:50:230
38233282161,3sleep20-21swapper/211:40:332
37483582160,1sleep20-21swapper/210:57:012
37383802161,10sleep23738648-21grep10:50:272
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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