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2026-02-21 - 14:59
[ 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 Sat Feb 21, 2026 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1607076212054,61sleep30-21swapper/307:06:313
160709428561,12sleep10-21swapper/107:06:451
160717928063,10sleep20-21swapper/207:07:492
160706727757,14sleep00-21swapper/007:06:240
160749999601,15cyclictest0-21swapper/308:03:213
18269592580,1sleep20-21swapper/210:04:422
1607499995148,2cyclictest0-21swapper/312:02:183
1607499995046,2cyclictest0-21swapper/309:42:293
19547062490,1sleep00-21swapper/011:17:000
1607499994947,1cyclictest0-21swapper/311:00:183
1607499994938,4cyclictest18443532sleep310:14:333
1607499994846,1cyclictest0-21swapper/311:55:043
1607499994744,2cyclictest0-21swapper/309:55:323
160749999470,28cyclictest0-21swapper/309:12:553
1607499994542,1cyclictest0-21swapper/310:55:503
160749999450,21cyclictest0-21swapper/312:37:323
160749999450,17cyclictest0-21swapper/309:17:133
1607499994427,14cyclictest0-21swapper/312:18:263
160749999430,32cyclictest0-21swapper/311:26:533
160749999430,32cyclictest0-21swapper/311:26:533
160749999430,24cyclictest0-21swapper/311:16:043
160749999430,22cyclictest0-21swapper/308:43:403
17817402420,1sleep20-21swapper/209:36:442
1607499994239,1cyclictest0-21swapper/310:26:453
160749999422,17cyclictest0-21swapper/311:46:133
1607499994216,9cyclictest0-21swapper/312:13:483
160749999420,20cyclictest0-21swapper/312:25:223
1607499994038,1cyclictest0-21swapper/310:21:273
1607499994037,1cyclictest0-21swapper/311:53:233
1607499993910,20cyclictest0-21swapper/312:33:263
160749999390,28cyclictest63750irq/124-enp1s0-TxRx-010:17:383
18244592380,1sleep10-21swapper/110:01:241
160749999388,17cyclictest0-21swapper/309:52:563
1607499993836,1cyclictest0-21swapper/309:45:203
1607499993836,1cyclictest0-21swapper/309:45:203
1607499993836,1cyclictest0-21swapper/309:05:273
160749999380,22cyclictest0-21swapper/310:53:543
1607499993734,1cyclictest0-21swapper/311:32:063
1607499993734,1cyclictest0-21swapper/309:26:213
1607499993720,11cyclictest18773702sleep310:32:053
160749999371,30cyclictest63750irq/124-enp1s0-TxRx-007:16:253
160749999370,21cyclictest63750irq/124-enp1s0-TxRx-010:46:323
1607499993633,2cyclictest0-21swapper/311:07:543
1607499993633,1cyclictest0-21swapper/312:06:353
1607499993633,1cyclictest0-21swapper/309:36:453
1607499993631,2cyclictest0-21swapper/310:00:323
160749999356,19cyclictest541ktimers/311:10:283
1607499993533,1cyclictest0-21swapper/309:22:123
1607499993532,1cyclictest0-21swapper/310:05:103
160749999351,15cyclictest0-21swapper/308:20:223
160749999350,20cyclictest0-21swapper/311:40:113
20066912340,1sleep10-21swapper/111:47:471
160749999342,18cyclictest63750irq/124-enp1s0-TxRx-008:10:533
1607499993330,1cyclictest0-21swapper/308:45:133
160749999331,9cyclictest0-21swapper/310:43:353
160749999320,17cyclictest0-21swapper/311:20:353
160749999310,29cyclictest0-21swapper/308:05:113
1607499993027,2cyclictest0-21swapper/312:20:213
160749999300,11cyclictest0-21swapper/310:35:073
160749999291,13cyclictest0-21swapper/307:25:193
160749999290,26cyclictest0-21swapper/309:33:123
16403582280,1sleep20-21swapper/207:39:522
1607499992825,1cyclictest0-21swapper/311:37:483
1607499992717,1cyclictest0-21swapper/307:30:173
1607499992522,1cyclictest0-21swapper/308:52:233
16713352240,1sleep10-21swapper/108:09:211
160749999241,9cyclictest0-21swapper/307:50:113
160749999241,8cyclictest0-21swapper/307:45:113
160749999240,19cyclictest16606122sleep307:57:253
20686592230,2sleep02068693-21ssh12:25:110
1607499992320,1cyclictest0-21swapper/307:20:193
20485142221,4sleep21732851-21diskmemload12:11:342
20046522220,2sleep00-21swapper/011:45:260
1607499992216,3cyclictest0-21swapper/307:39:313
20823762210,1sleep20-21swapper/212:30:582
1607499992119,1cyclictest0-21swapper/307:14:163
160749999211,17cyclictest0-21swapper/307:44:313
19720512200,1sleep10-21swapper/111:27:151
19720512200,1sleep10-21swapper/111:27:151
18324542201,13sleep11732851-21diskmemload10:05:371
160749999200,11cyclictest0-21swapper/308:35:223
19819792191,7sleep11981990-21ssh11:34:041
19036862190,1sleep00-21swapper/010:47:490
17562502190,1sleep10-21swapper/109:21:591
17418052190,15sleep20-21swapper/209:15:112
17399192191,3sleep10-21swapper/109:13:011
17224742190,1sleep20-21swapper/208:58:442
17224742190,1sleep20-21swapper/208:58:442
1607499991916,1cyclictest0-21swapper/308:30:183
160749999190,5cyclictest0-21swapper/308:15:143
160749999190,15cyclictest0-21swapper/309:05:003
18769592181,9sleep21732851-21diskmemload10:31:322
17941162181,8sleep21732851-21diskmemload09:45:182
17941162181,8sleep21732851-21diskmemload09:45:182
16399472180,3sleep172-21kcompactd007:36:181
20514362170,3sleep20-21swapper/212:15:062
19838282172,4sleep01985406-21cut11:35:160
19624462170,4sleep10-21swapper/111:20:491
18628492171,3sleep10-21swapper/110:25:131
18600632170,3sleep10-21swapper/110:22:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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