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2026-02-18 - 14:52
[ 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 Wed Feb 18, 2026 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3024016212564,57sleep30-21swapper/307:07:223
346019221080,2sleep20-21swapper/212:15:162
302397228756,12sleep20-21swapper/207:06:492
302413728149,12sleep10-21swapper/107:08:521
302421927851,8sleep00-21swapper/007:09:550
302433099540,36cyclictest0-21swapper/308:50:113
3024330995351,1cyclictest0-21swapper/310:06:243
3024330995350,1cyclictest0-21swapper/308:05:343
3024330995047,1cyclictest0-21swapper/310:40:463
3024330995047,1cyclictest0-21swapper/310:40:453
302433099480,1cyclictest0-21swapper/312:01:523
3024330994744,1cyclictest0-21swapper/312:19:073
3024330994713,14cyclictest0-21swapper/311:49:283
302433099470,17cyclictest0-21swapper/309:38:063
3024330994619,10cyclictest0-21swapper/311:04:063
302433099440,16cyclictest0-21swapper/310:15:183
32212142430,1sleep00-21swapper/009:50:400
3024330994340,1cyclictest0-21swapper/310:35:453
302433099431,19cyclictest0-21swapper/307:16:213
302433099430,23cyclictest63750irq/124-enp1s0-TxRx-010:22:113
3024330994239,1cyclictest0-21swapper/309:18:173
302433099420,10cyclictest0-21swapper/311:35:063
302433099420,10cyclictest0-21swapper/311:35:063
3024330994139,1cyclictest0-21swapper/312:10:033
3024330994136,1cyclictest0-21swapper/312:25:283
3024330994119,11cyclictest63750irq/124-enp1s0-TxRx-009:57:223
3024330994034,1cyclictest0-21swapper/311:25:103
302433099402,21cyclictest63750irq/124-enp1s0-TxRx-010:32:253
302433099400,15cyclictest0-21swapper/312:30:143
302433099399,6cyclictest0-21swapper/309:31:293
3024330993937,1cyclictest0-21swapper/309:46:463
302433099392,29cyclictest3103556-21taskset08:24:573
302433099391,14cyclictest0-21swapper/310:25:533
302433099390,26cyclictest0-21swapper/310:11:043
302433099380,36cyclictest0-21swapper/307:49:553
3024330993734,2cyclictest0-21swapper/311:09:363
3024330993734,2cyclictest0-21swapper/310:52:403
302433099373,24cyclictest63750irq/124-enp1s0-TxRx-007:59:553
3024330993711,6cyclictest0-21swapper/312:05:193
31570042360,12sleep30-21swapper/309:13:283
302433099369,9cyclictest0-21swapper/310:45:083
3024330993633,1cyclictest0-21swapper/311:24:243
302433099360,17cyclictest0-21swapper/311:51:073
3024330993532,1cyclictest0-21swapper/311:12:253
302433099351,21cyclictest0-21swapper/309:41:573
302433099351,18cyclictest0-21swapper/307:31:243
302433099350,18cyclictest0-21swapper/308:45:143
3024330993431,1cyclictest0-21swapper/310:02:593
302433099341,30cyclictest0-21swapper/308:30:123
302433099341,21cyclictest0-21swapper/311:41:203
32652282331,3sleep03265242-21ssh10:19:380
3024330993325,1cyclictest0-21swapper/311:30:043
302433099330,15cyclictest63750irq/124-enp1s0-TxRx-010:55:343
33396782320,1sleep10-21swapper/111:03:221
3024330993229,1cyclictest0-21swapper/309:23:323
302433099320,18cyclictest0-21swapper/312:36:573
31564692310,1sleep20-21swapper/209:12:332
302433099314,11cyclictest0-21swapper/308:00:173
302433099313,17cyclictest63750irq/124-enp1s0-TxRx-009:51:003
34293152300,1sleep20-21swapper/211:55:582
3024330993027,1cyclictest0-21swapper/309:05:263
302433099302,20cyclictest0-21swapper/308:27:323
302433099300,19cyclictest0-21swapper/309:27:493
302433099300,11cyclictest0-21swapper/307:40:243
33228162290,4sleep10-21swapper/110:53:071
302433099293,23cyclictest0-21swapper/307:10:593
302433099292,24cyclictest63750irq/124-enp1s0-TxRx-007:50:203
302433099290,17cyclictest0-21swapper/308:55:103
3024330992826,1cyclictest0-21swapper/307:25:173
3024330992825,1cyclictest0-21swapper/312:21:093
31746052270,2sleep10-21swapper/109:24:521
3024330992725,1cyclictest0-21swapper/311:15:093
302433099270,20cyclictest541ktimers/308:12:293
3024330992523,1cyclictest0-21swapper/307:20:133
3024330992521,2cyclictest0-21swapper/311:59:303
34396532241,7sleep03149930-21diskmemload12:04:020
33896112240,4sleep00-21swapper/011:33:070
3024330992414,1cyclictest0-21swapper/308:40:113
302433099240,10cyclictest0-21swapper/308:15:093
30928012230,1sleep00-21swapper/008:12:080
3024330992321,1cyclictest0-21swapper/307:39:023
34375602220,1sleep10-21swapper/112:01:061
30245192220,1sleep10-21swapper/107:10:091
33482682211,4sleep20-21swapper/211:08:282
33732732191,4sleep00-21swapper/011:23:290
32987932191,6sleep20-21swapper/210:39:492
32983812190,6sleep0151ktimers/010:39:140
33817962181,3sleep20-21swapper/211:28:482
32740902181,3sleep00-21swapper/010:25:030
30625582180,1sleep20-21swapper/207:45:132
302433099181,13cyclictest0-21swapper/309:00:123
34510672171,10sleep13452670-21sed12:10:161
34480322171,3sleep20-21swapper/212:09:162
34247782171,11sleep03425147-21kthreadcore11:55:150
32960012171,3sleep10-21swapper/110:35:551
32812182171,3sleep10-21swapper/110:28:491
32709622171,2sleep20-21swapper/210:20:572
32632622170,1sleep20-21swapper/210:16:492
32561622171,3sleep10-21swapper/110:13:271
32398862171,4sleep23149930-21diskmemload10:03:452
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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