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2026-02-26 - 16:12
[ 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 Thu Feb 26, 2026 12:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
310956199531,50cyclictest3544979-21ssh11:33:393
3109561995148,2cyclictest32450122sleep309:16:473
3109556994821,26cyclictest3329594-21sh10:05:482
3109556994744,2cyclictest3215791-21/usr/sbin/munin08:55:222
310955699470,47cyclictest0-21swapper/211:00:362
3109551994518,25cyclictest0-21swapper/010:28:250
3109551994518,25cyclictest0-21swapper/010:28:240
310956199442,40cyclictest3488062-21cc111:12:103
3109556994438,3cyclictest3689405-21cc112:30:082
3109554994433,10cyclictest0-21swapper/111:17:431
310955199445,38cyclictest3713926-21genksyms12:37:530
310956199431,3cyclictest3425297-21cc110:45:123
3109556994340,2cyclictest3230489-21diskmemload11:08:122
310955699431,40cyclictest3620155-21cc112:01:532
3109554994338,4cyclictest0-21swapper/111:23:301
3109551994338,3cyclictest3540135-21cc111:30:430
3109551994336,6cyclictest32641922sleep009:29:310
310956199421,3cyclictest3717464-21cc112:40:003
310956199421,3cyclictest3598771-21cc111:54:473
310956199421,39cyclictest3384629-21cc110:30:483
3109554994239,2cyclictest32950142sleep109:45:321
3109554994239,2cyclictest32950142sleep109:45:321
3109554994237,4cyclictest0-21swapper/112:20:011
310955199421,39cyclictest3449905-21cc110:52:450
310956199411,3cyclictest3610342-21cc111:59:033
310955699411,38cyclictest3527849-21ssh11:26:122
310955699411,37cyclictest3659263-21cc112:17:222
310955499411,3cyclictest3714969-21cc112:38:321
3109551994135,4cyclictest0-21swapper/011:57:540
310955199411,2cyclictest0-21swapper/009:54:280
310956199401,7cyclictest3701103-21ssh12:33:303
310956199401,3cyclictest3631178-21genksyms12:05:383
310955699406,31cyclictest3683492-21cc112:26:532
3109556994035,3cyclictest0-21swapper/212:05:132
310955699401,37cyclictest3596829-21cc111:53:342
310955699401,36cyclictest3585727-21cc111:49:402
3109554994029,9cyclictest3593422-21cc111:51:211
310955499401,37cyclictest3647251-21cc112:12:081
310955499401,37cyclictest3573862-21cc111:45:141
310955499401,2cyclictest3680546-21cc112:25:241
310955199401,8cyclictest3586239-21cc111:50:000
310955199401,38cyclictest3556669-21cc111:37:420
310956199391,36cyclictest3370105-21cc110:28:253
310956199391,36cyclictest3370105-21cc110:28:243
310956199391,34cyclictest3651813-21cc112:15:063
310956199391,34cyclictest3405019-21cc110:40:023
310955699391,11cyclictest3572540-21cc111:44:412
310955499391,4cyclictest3482821-21cc111:10:231
310955499391,32cyclictest3188869-21ntpq08:25:191
3109551993935,2cyclictest3411680-21cc110:41:010
3109551993934,3cyclictest3518524-21ssh11:23:420
3109551993911,26cyclictest3385344-21cc110:31:140
310955199390,2cyclictest3438619-21cc110:49:310
310956199381,3cyclictest3674858-21cc112:24:393
310956199381,35cyclictest3501498-21cc111:17:093
310955699388,19cyclictest33575892sleep210:23:182
3109556993834,3cyclictest401ktimers/209:58:522
3109556993833,3cyclictest3435899-21cc110:48:252
310955699382,33cyclictest3672381-21cc112:22:552
310955699381,35cyclictest3545336-21cc111:34:012
310955699381,35cyclictest3488002-21cc111:12:082
310955699381,35cyclictest3401501-21cc110:37:432
310955699380,37cyclictest3238865-21ssh09:14:512
310955499381,35cyclictest3572423-21cc111:44:371
310955499381,35cyclictest3540645-21cc111:31:031
310955199381,35cyclictest3502281-21cc111:17:350
310955199380,37cyclictest3697127-21nm12:31:330
310956199371,34cyclictest3684688-21cc112:27:423
310956199371,34cyclictest3448931-21cc110:52:113
3109556993732,3cyclictest3556193-21cc111:37:242
3109556993732,3cyclictest0-21swapper/212:35:112
310955699371,3cyclictest3646977-21cc112:11:562
310955699371,34cyclictest3500304-21cc111:16:182
3109556993710,25cyclictest3414206-21cc110:42:332
310955499371,33cyclictest3556294-21cc111:37:271
310955199371,34cyclictest3673631-21cc112:23:500
310955199371,34cyclictest3523405-21cc111:25:210
3109561993633,3cyclictest192-21jbd2/sda2-808:33:353
3109561993633,2cyclictest3320723-21kworker/u16:0-xprtiod10:24:573
310956199361,33cyclictest3567014-21cc111:41:083
310956199361,33cyclictest3554625-21cc111:36:293
310955699364,26cyclictest3229468-21ntpq09:05:192
310955699362,21cyclictest3323178-21ssh10:03:522
310955699361,33cyclictest3608871-21cc111:57:502
3109554993633,2cyclictest0-21swapper/112:02:421
310955499362,32cyclictest0-21swapper/110:42:541
310955499361,33cyclictest3700246-21cc112:32:581
310955499361,33cyclictest3670167-21ssh12:21:251
310955499361,33cyclictest3606594-21cc111:56:191
310955499361,33cyclictest3449264-21cc110:52:231
310955499361,33cyclictest3400795-21cc110:37:161
310955499361,33cyclictest3372882-21cc110:29:581
310955499361,33cyclictest3372882-21cc110:29:571
310955499361,30cyclictest3633767-21cc112:07:301
310955199361,32cyclictest3620694-21cc112:02:050
3109561993534,1cyclictest0-21swapper/310:10:193
3109561993529,5cyclictest3272052-21sh09:33:443
310955699351,4cyclictest3376919-21cc110:30:172
310955699351,32cyclictest3513289-21cc111:21:012
310955199351,32cyclictest3686372-21cc112:28:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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