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2026-01-14 - 18:01
[ 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 #e, slot #4

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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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rackeslot4s.osadl.org (updated Wed Jan 14, 2026 12:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
852410994138,2cyclictest1096066-21kworker/u8:2+events_unbound11:15:130
852412993934,3cyclictest889163-21/usr/sbin/munin07:45:141
852410993632,3cyclictest852367-21kworker/u8:2+events_unbound08:34:510
852410993532,2cyclictest842209-21kworker/u8:3+events_unbound07:10:230
852410993532,2cyclictest842209-21kworker/u8:3+events_unbound07:10:220
852421993428,4cyclictest935431-21latency_hist08:30:023
852417993327,4cyclictest1039807-21latency_hist10:15:012
852410993329,3cyclictest1096066-21kworker/u8:2+events_unbound12:17:490
852410993329,3cyclictest1096066-21kworker/u8:2+events_unbound11:43:510
852410993328,4cyclictest1117275-21apt-get11:30:110
852417993127,2cyclictest920119-21/usr/sbin/munin08:15:352
852417993125,4cyclictest1050086-21latency_hist10:25:012
852410993128,2cyclictest842209-21kworker/u8:3+events_unbound08:37:500
852410993126,4cyclictest1014359-21apt-get09:50:120
852421993025,3cyclictest1004100-21/usr/sbin/munin09:40:113
852417993026,3cyclictest966379-21kworker/u8:1+flush-259:009:14:592
852410993026,3cyclictest956309-21kworker/u8:0+events_unbound09:02:500
85241099302,27cyclictest1-21systemd08:27:490
852421992924,3cyclictest842209-21kworker/u8:3+flush-259:008:05:203
852410992926,2cyclictest956309-21kworker/u8:0+events_unbound10:15:480
852410992926,2cyclictest883797-21kworker/u8:1+events_unbound07:57:490
852410992926,2cyclictest1111868-21kworker/u8:0+events_unbound11:46:500
852410992926,2cyclictest1060362-21kworker/u8:2+events_unbound10:38:500
852410992925,3cyclictest852367-21kworker/u8:2+events_unbound07:29:490
852410992925,3cyclictest842209-21kworker/u8:3+events_unbound08:08:500
852410992922,5cyclictest877314-21ntpq07:30:190
852410992825,2cyclictest956309-21kworker/u8:0+events_unbound10:57:500
852410992825,2cyclictest1111868-21kworker/u8:0+events_unbound12:07:500
852410992825,2cyclictest1111868-21kworker/u8:0+events_unbound11:29:500
852410992824,3cyclictest842209-21kworker/u8:3+events_unbound07:47:560
852412992723,3cyclictest1096066-21kworker/u8:2+flush-259:012:30:001
852410992724,2cyclictest966379-21kworker/u8:1+events_unbound09:26:500
852410992724,2cyclictest1111868-21kworker/u8:0+events_unbound12:34:570
852410992724,2cyclictest1096066-21kworker/u8:2+events_unbound12:38:510
852410992724,2cyclictest1096066-21kworker/u8:2+events_unbound12:00:250
852410992724,2cyclictest1019257-21kworker/u8:2+events_unbound09:57:510
852410992723,3cyclictest996860-21kworker/u8:3+events_unbound09:49:560
852410992723,3cyclictest883797-21kworker/u8:1+events_unbound07:54:500
852410992623,3cyclictest966379-21kworker/u8:1+events_unbound09:14:500
852410992623,2cyclictest956309-21kworker/u8:0+events_unbound10:49:490
852410992623,2cyclictest950934-21kworker/u8:1+events_unbound08:47:510
852410992623,2cyclictest842209-21kworker/u8:3+events_unbound08:42:510
852410992623,2cyclictest814927-21kworker/u8:1+events_unbound07:24:500
852421992521,3cyclictest966379-21kworker/u8:1+flush-259:009:10:223
852412992521,3cyclictest1111868-21kworker/u8:0+events_unbound12:20:141
852412992519,4cyclictest1189998-21cat12:40:011
852410992523,2cyclictest1111868-21kworker/u8:0+events_unbound12:21:490
852410992523,2cyclictest1111868-21kworker/u8:0+events_unbound12:13:510
852410992522,2cyclictest956309-21kworker/u8:0+events_unbound11:02:510
852410992522,2cyclictest956309-21kworker/u8:0+events_unbound09:17:000
852412992419,4cyclictest1153383-21latency_hist12:05:011
852412992418,4cyclictest1008027-21ntpq09:40:181
852410992422,2cyclictest1096066-21kworker/u8:2+events_unbound11:36:500
852410992421,2cyclictest956309-21kworker/u8:0+events_unbound10:44:560
852410992421,2cyclictest920097-21kworker/u8:0+events_unbound08:19:560
852410992421,2cyclictest842209-21kworker/u8:3+events_unbound08:04:510
852410992421,2cyclictest1096066-21kworker/u8:2+events_unbound11:54:560
852410992420,3cyclictest956309-21kworker/u8:0+events_unbound10:11:510
852410992418,4cyclictest961222-21latency_hist08:55:000
852421992320,2cyclictest1096094-21kworker/u8:4+flush-259:011:10:153
852421992318,4cyclictest956309-21kworker/u8:0+flush-259:010:45:153
852421992317,4cyclictest956309-21kworker/u8:0+flush-259:008:50:153
852421992316,5cyclictest1174410-21latency_hist12:25:013
852412992320,2cyclictest1127332-21kworker/u8:3+events_unbound11:55:001
852410992320,2cyclictest1096066-21kworker/u8:2+events_unbound11:59:570
852421992220,1cyclictest814927-21kworker/u8:1+flush-259:007:20:103
852421992219,2cyclictest996860-21kworker/u8:3+flush-259:009:50:243
852421992219,2cyclictest852367-21kworker/u8:2+flush-259:007:50:313
852421992218,3cyclictest842209-21kworker/u8:3+events_unbound08:30:183
852421992218,3cyclictest1034691-21kworker/u8:3+flush-259:010:15:253
852410992219,2cyclictest842209-21kworker/u8:3+events_unbound09:09:210
852410992219,2cyclictest842209-21kworker/u8:3+events_unbound07:40:020
85241799218,1cyclictest0-21swapper/211:59:592
852417992115,4cyclictest252-21systemd-journal11:45:002
852417992114,5cyclictest991156-21ntpq09:20:222
852412992117,3cyclictest842209-21kworker/u8:3+flush-259:008:05:001
852412992117,3cyclictest1040073-21apt-get10:15:131
852410992118,2cyclictest956309-21kworker/u8:0+events_unbound09:38:210
852410992118,2cyclictest842209-21kworker/u8:3+events_unbound07:15:060
852410992118,2cyclictest842209-21kworker/u8:3+events_unbound07:15:060
852410992117,3cyclictest842209-21kworker/u8:3+events_unbound08:14:470
85241099210,20cyclictest1-21systemd11:10:480
852421992016,3cyclictest950934-21kworker/u8:1+events_unbound08:45:133
852421992016,3cyclictest1111868-21kworker/u8:0+flush-259:011:25:183
852421992016,2cyclictest873048-21latency_hist07:30:013
852421992014,4cyclictest986883-21latency_hist09:20:013
852421992013,5cyclictest1065711-21/usr/sbin/munin10:40:133
852417992016,3cyclictest893880-21journal-offline07:47:492
852412992016,3cyclictest935456-21kworker/u8:1+flush-259:008:30:001
852412992015,3cyclictest976841-21/usr/sbin/munin09:10:131
852412992014,4cyclictest1101574-21latency_hist11:15:001
852410992017,2cyclictest956309-21kworker/u8:0+events_unbound10:20:560
852410992017,2cyclictest852367-21kworker/u8:2+events_unbound08:24:480
852410992016,3cyclictest996860-21kworker/u8:3+events_unbound09:32:520
852410992016,3cyclictest966379-21kworker/u8:1+events_unbound09:21:150
852421991916,2cyclictest966379-21kworker/u8:1+flush-259:009:05:213
852421991916,2cyclictest1111868-21kworker/u8:0+events_unbound11:30:223
852421991916,2cyclictest1003435-21cron09:40:003
852421991915,3cyclictest1040076-21kworker/u8:1+events_unbound10:25:223
852421991914,3cyclictest842209-21kworker/u8:3+flush-259:008:55:203
852421991913,4cyclictest1158718-21cat12:10:013
852417991916,2cyclictest842209-21kworker/u8:3+flush-259:008:22:202
852417991916,2cyclictest1096066-21kworker/u8:2+flush-259:012:00:152
852417991915,3cyclictest956309-21kworker/u8:0+flush-259:010:40:232
852412991915,3cyclictest966619-21apt-get09:00:121
852412991915,3cyclictest1111868-21kworker/u8:0+flush-259:011:55:161
852412991914,4cyclictest1132427-21apt-get11:45:001
852412991913,4cyclictest981980-21/usr/sbin/munin09:15:131
852412991912,1cyclictest0-21swapper/110:25:011
852410991916,2cyclictest956309-21kworker/u8:0+events_unbound09:42:250
852410991916,2cyclictest1096094-21kworker/u8:4+events_unbound11:24:080
852410991916,2cyclictest1096066-21kworker/u8:2+events_unbound11:08:480
852410991914,3cyclictest814927-21kworker/u8:1+events_unbound07:10:010
852421991816,2cyclictest920097-21kworker/u8:0+flush-259:008:21:563
852421991814,3cyclictest1008996-21kworker/u8:1+events_unbound10:05:133
852412991813,4cyclictest1086300-21/usr/sbin/munin11:00:201
852412991812,5cyclictest1028608-21ntpq10:00:181
852410991815,2cyclictest956309-21kworker/u8:0+events_unbound08:57:520
852410991815,2cyclictest1111868-21kworker/u8:0+events_unbound12:26:330
852410991815,2cyclictest1060362-21kworker/u8:2+events_unbound10:51:420
852410991815,2cyclictest1019257-21kworker/u8:2+events_unbound10:09:220
852421991714,2cyclictest956309-21kworker/u8:0+flush-259:010:20:203
852421991714,2cyclictest1143084-21sh11:55:003
852421991714,2cyclictest1096094-21kworker/u8:4+flush-259:011:15:203
852421991713,3cyclictest842209-21kworker/u8:3+flush-259:007:30:183
852421991713,3cyclictest1111868-21kworker/u8:0+events_unbound11:55:223
852421991713,3cyclictest1096066-21kworker/u8:2+events_unbound11:45:013
852421991713,3cyclictest1096066-21kworker/u8:2+events_unbound11:08:323
852421991713,3cyclictest1075731-21kworker/u8:3+flush-259:010:50:253
852421991713,2cyclictest1111868-21kworker/u8:0+flush-259:011:40:243
852421991710,5cyclictest1065473-21latency_hist10:40:003
852417991714,3cyclictest842209-21kworker/u8:3+flush-259:008:00:012
852417991714,2cyclictest1050546-21fschecks_count10:25:142
852417991712,4cyclictest1137074-21ntpq11:45:192
852417991712,3cyclictest252-21systemd-journal07:55:012
852412991713,3cyclictest878313-21gpgv07:35:001
852412991713,3cyclictest1034635-21idleruntime-cro10:10:001
852412991710,6cyclictest1086052-21idleruntime-cro11:00:001
85241099172,4cyclictest1054477-21/usr/sbin/munin10:25:230
852410991714,2cyclictest956309-21kworker/u8:0+events_unbound10:30:020
852410991714,2cyclictest61150irq/133-enp0s29f1:tx-010:02:480
852421991613,2cyclictest883797-21kworker/u8:1+flush-259:007:55:213
852421991612,3cyclictest842209-21kworker/u8:3+flush-259:008:40:153
852421991612,3cyclictest1096094-21kworker/u8:4+flush-259:011:20:173
852421991612,3cyclictest1019257-21kworker/u8:2+flush-259:010:00:233
852417991613,2cyclictest879310-21irqcore07:35:202
852417991613,2cyclictest500-21systemd-logind09:55:002
85241299169,5cyclictest1111012-21ntpq11:20:191
852412991613,2cyclictest1111868-21kworker/u8:0+flush-259:012:10:211
852412991613,2cyclictest1096419-21idleruntime-cro11:10:001
852412991612,3cyclictest1153621-21/usr/sbin/munin12:05:141
85242199158,5cyclictest997202-21latency_hist09:30:003
852421991511,3cyclictest956309-21kworker/u8:0+events_unbound09:20:273
852421991511,3cyclictest935456-21kworker/u8:1+events_unbound08:36:503
852421991511,3cyclictest842209-21kworker/u8:3+events_unbound07:15:113
852421991511,3cyclictest842209-21kworker/u8:3+events_unbound07:15:103
852421991511,3cyclictest1075731-21kworker/u8:3+events_unbound11:00:223
852421991511,3cyclictest1034691-21kworker/u8:3+events_unbound10:10:153
852421991510,4cyclictest1096066-21kworker/u8:2+events_unbound12:04:513
852421991510,3cyclictest842209-21kworker/u8:3+flush-259:008:15:053
852417991512,2cyclictest904735-21cpuspeed_turbos08:00:122
852417991512,2cyclictest868155-21apt-get07:25:132
852417991512,2cyclictest252-21systemd-journal10:17:002
852417991510,4cyclictest945728-21latency_hist08:40:012
852412991512,3cyclictest1111868-21kworker/u8:0+flush-259:012:15:241
852412991512,2cyclictest1111868-21kworker/u8:0+events_unbound11:30:161
852412991512,1cyclictest0-21swapper/109:35:011
852412991511,3cyclictest951157-21apt-get08:45:111
852421991411,2cyclictest490-21dbus-daemon09:05:003
852421991411,2cyclictest1019590-21tr09:55:123
852421991410,3cyclictest996860-21kworker/u8:3+events_unbound09:31:503
852421991410,3cyclictest852367-21kworker/u8:2+events_unbound07:35:223
852421991410,3cyclictest500-21systemd-logind08:15:013
852417991412,1cyclictest0-21swapper/212:40:002
852417991411,2cyclictest814927-21kworker/u8:1+events_unbound07:20:132
852417991411,2cyclictest1091683-21fschecks_count11:05:152
852417991411,2cyclictest1029070-21unixbench_singl10:00:242
852412991411,2cyclictest1070137-21unixbench_multi10:40:231
852412991410,3cyclictest252-21systemd-journal07:26:491
852412991410,3cyclictest1111868-21kworker/u8:0+events_unbound11:29:591
85242199139,3cyclictest996860-21kworker/u8:3+events_unbound09:49:513
85242199139,3cyclictest1096066-21kworker/u8:2+events_unbound12:10:013
85242199139,3cyclictest1060362-21kworker/u8:2+flush-259:010:55:253
852421991310,2cyclictest956309-21kworker/u8:0+events_unbound10:30:163
852421991310,2cyclictest0-21swapper/312:15:163
85241799139,3cyclictest956309-21kworker/u8:0+flush-259:009:35:192
85241799139,3cyclictest884033-21apt-get07:40:102
85241799139,3cyclictest1096066-21kworker/u8:2+flush-259:012:25:152
852417991310,2cyclictest915067-21cpuspeed_turbos08:10:122
852417991310,2cyclictest1164592-21fschecks_time12:15:142
852417991310,2cyclictest1060362-21kworker/u8:2+events_unbound10:35:122
852417991310,2cyclictest1056482-21kthreadcore10:30:162
85241299138,4cyclictest1075988-21/usr/sbin/munin10:50:141
852412991311,1cyclictest956309-21kworker/u8:0+events_unbound09:45:151
852412991310,2cyclictest1040076-21kworker/u8:1+events_unbound10:35:161
852412991310,1cyclictest0-21swapper/108:50:141
85242199128,3cyclictest852367-21kworker/u8:2+flush-259:007:40:103
85242199127,4cyclictest842209-21kworker/u8:3+events_unbound07:45:173
85241799129,2cyclictest842209-21kworker/u8:3+flush-259:007:15:132
85241799129,2cyclictest842209-21kworker/u8:3+flush-259:007:15:122
85241799129,2cyclictest1096779-21cpuspeed_turbos11:10:122
85241799129,2cyclictest1096094-21kworker/u8:4+flush-259:011:20:152
85241799129,2cyclictest1019257-21kworker/u8:2+flush-259:009:55:202
85241799129,1cyclictest0-21swapper/209:06:482
85241799128,3cyclictest842209-21kworker/u8:3+flush-259:008:08:572
85241799128,3cyclictest1096094-21kworker/u8:4+flush-259:011:15:562
85241799127,4cyclictest1153932-21fw_forwarded_lo12:05:142
85241799127,3cyclictest997860-21apt-get09:35:012
85241799120,10cyclictest878194-21awk07:35:002
85241299129,2cyclictest972771-21kthreadcore09:05:161
85241299129,2cyclictest842209-21kworker/u8:3+events_unbound07:10:201
85241299129,2cyclictest842209-21kworker/u8:3+events_unbound07:10:201
85241299128,3cyclictest252-21systemd-journal09:39:591
85241299128,3cyclictest1096066-21kworker/u8:2+events_unbound12:30:191
85241299128,3cyclictest1040076-21kworker/u8:1+events_unbound10:25:181
85241299128,2cyclictest842209-21kworker/u8:3+flush-259:008:35:241
85241299120,5cyclictest899243-21idleruntime-cro07:55:011
85241799119,1cyclictest946541-21irqcore08:40:162
85241799119,1cyclictest1117697-21irqcore11:30:152
85241799119,1cyclictest0-21swapper/211:50:172
85241799119,1cyclictest0-21swapper/209:45:212
85241799118,2cyclictest1164117-21idleruntime-cro12:15:002
85241799117,3cyclictest985948-21ntp_09:15:182
85241799117,3cyclictest1111868-21kworker/u8:0+flush-259:012:20:162
85241799117,3cyclictest1071162-21fw_packets10:45:132
85241299119,2cyclictest842209-21kworker/u8:3+flush-259:008:40:241
85241299118,2cyclictest852367-21kworker/u8:2+flush-259:007:40:201
85241299118,2cyclictest1124702-21kthreadcore11:35:171
85241299118,2cyclictest1008996-21kworker/u8:1+flush-259:009:55:161
85242199107,2cyclictest852690-21cpuspeed_turbos07:10:133
85242199107,2cyclictest852690-21cpuspeed_turbos07:10:123
85241799107,2cyclictest1183813-21ntp_kernel_err12:30:192
85241799105,3cyclictest1112779-21sed11:25:162
8524179996,2cyclictest953268-21kthreadcore08:45:172
8524179996,2cyclictest1081240-21cpuspeed_turbos10:55:132
8524129994,3cyclictest914949-21/usr/sbin/munin08:10:131
8524179986,1cyclictest0-21swapper/209:25:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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