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2026-09-13 - 07:59

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 376 highest latencies:
System rackeslot4s.osadl.org (updated Sun Sep 13, 2026 00:44:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4072382995349,3cyclictest149137-21gpgv23:30:011
4072382995349,3cyclictest149137-21gpgv23:30:001
4072382994036,3cyclictest132871-21kworker/u8:0+events_unbound00:20:251
4072382993936,2cyclictest18778-21kworker/u8:4+flush-259:022:15:251
4072391993633,2cyclictest132871-21kworker/u8:0+flush-259:000:29:283
4072391993633,2cyclictest117003-21kworker/u8:1+flush-259:023:20:243
4072382993633,2cyclictest4134836-21kworker/u8:2+events_unbound21:05:251
4072391993431,2cyclictest65303-21kworker/u8:0+events_unbound22:15:123
4072391993430,3cyclictest132871-21kworker/u8:0+flush-259:000:20:173
4072382993330,2cyclictest132871-21kworker/u8:0+flush-259:000:35:261
4072382993329,3cyclictest160066-21/usr/sbin/munin23:40:141
4072391993228,3cyclictest3041-21kworker/u8:0+flush-259:021:15:133
4072382993225,5cyclictest12749-21ntpq21:15:231
4072378993228,3cyclictest4072618-21apt-get19:10:140
4072378993226,4cyclictest212014-21latency_hist00:30:000
4072391993025,4cyclictest39701-21/usr/sbin/munin21:45:203
4072382993027,2cyclictest4160649-21kworker/u8:0+events_unbound20:35:131
4072391992926,2cyclictest132871-21kworker/u8:0+events_unbound23:37:113
4072391992923,4cyclictest335557-21systemd-journal21:25:003
4072391992923,4cyclictest335557-21systemd-journal21:25:003
4072382992926,2cyclictest117003-21kworker/u8:1+flush-259:023:35:181
4072378992923,4cyclictest191762-21diskstats00:10:180
4072391992824,3cyclictest2011057-21kworker/u8:3+flush-259:019:25:263
4072387992825,2cyclictest4098249-21kworker/u8:1+flush-259:019:50:272
4072382992823,4cyclictest207270-21diskstats00:25:141
4072378992821,5cyclictest165034-21latency_hist23:45:010
4072387992725,2cyclictest132871-21kworker/u8:0+events_unbound00:15:272
4072382992724,3cyclictest55174-21kworker/u8:2+events_unbound22:10:161
4072382992724,3cyclictest4186012-21kworker/u8:1+events_unbound21:50:121
4072382992723,3cyclictest335557-21systemd-journal23:18:011
4072382992721,4cyclictest153727-21ntpq23:30:191
4072378992719,5cyclictest190433-21ntpq00:05:220
4072391992623,2cyclictest8460-21kworker/u8:3+flush-259:021:45:003
4072391992623,2cyclictest55174-21kworker/u8:2+events_unbound22:10:183
4072387992622,3cyclictest55174-21kworker/u8:2+flush-259:022:10:182
4072387992622,3cyclictest4119478-21base6419:55:012
4072391992522,3cyclictest4134836-21kworker/u8:2+flush-259:020:15:263
4072391992521,3cyclictest165297-21apt-get23:45:133
4072382992522,2cyclictest91216-21kworker/u8:1+flush-259:022:45:181
4072382992521,3cyclictest65303-21kworker/u8:0+events_unbound22:40:121
4072382992521,3cyclictest34546-21/usr/sbin/munin21:40:191
4072378992522,2cyclictest170284-21gpgv23:50:000
4072378992521,3cyclictest159576-21kworker/u8:2+flush-259:000:05:000
4072378992520,4cyclictest13884-21apt-get21:20:130
4072378992520,4cyclictest13884-21apt-get21:20:130
4072391992421,2cyclictest18778-21kworker/u8:4+events_unbound22:35:263
4072387992420,3cyclictest4134836-21kworker/u8:2+flush-259:020:20:172
4072382992421,2cyclictest4186012-21kworker/u8:1+events_unbound21:37:281
4072382992420,3cyclictest4019510-21kworker/u8:1+events_unbound19:18:281
4072378992418,4cyclictest509-21rs:main0
4072378992417,5cyclictest4124699-21/usr/sbin/munin20:00:190
4072391992321,1cyclictest101610-21grep22:45:013
4072391992320,2cyclictest18778-21kworker/u8:4+events_unbound22:20:203
4072391992319,3cyclictest132871-21kworker/u8:0+events_unbound00:30:223
4072387992317,4cyclictest217829-21cp00:35:012
4072382992320,2cyclictest65303-21kworker/u8:0+events_unbound22:52:291
4072382992320,2cyclictest132871-21kworker/u8:0+events_unbound00:00:201
4072382992319,3cyclictest91217-21kworker/u8:5+flush-259:022:55:181
4072382992319,3cyclictest3041-21kworker/u8:0+events_unbound21:20:221
4072382992319,3cyclictest3041-21kworker/u8:0+events_unbound21:20:221
4072378992314,6cyclictest175858-21latency_hist23:55:000
4072387992219,2cyclictest3041-21kworker/u8:0+flush-259:021:15:182
4072387992216,4cyclictest4097339-21ntpq19:30:222
4072382992219,2cyclictest65303-21kworker/u8:0+events_unbound22:32:281
4072382992219,2cyclictest4134836-21kworker/u8:2+events_unbound20:15:281
4072382992219,2cyclictest2011057-21kworker/u8:3+events_unbound20:05:181
4072382992219,2cyclictest132871-21kworker/u8:0+events_unbound00:06:271
4072382992218,3cyclictest128050-21base6423:10:001
4072382992216,4cyclictest127719-21base6423:10:001
4072378992218,3cyclictest18778-21kworker/u8:4+events_unbound23:00:180
4072378992215,5cyclictest4180416-21ntpq20:50:210
4072391992118,2cyclictest91217-21kworker/u8:5+events_unbound22:50:313
4072391992118,2cyclictest4108246-21kworker/u8:2+events_unbound19:45:213
4072391992117,3cyclictest91217-21kworker/u8:5+flush-259:022:55:213
4072391992117,3cyclictest4155126-21kworker/u8:3+flush-259:020:30:213
4072391992116,4cyclictest335557-21systemd-journal22:27:273
4072387992118,2cyclictest4134836-21kworker/u8:2+events_unbound20:15:152
4072382992117,3cyclictest335557-21systemd-journal21:01:281
4072378992115,4cyclictest117155-21kworker/u8:2+flush-259:023:05:170
4072391992018,2cyclictest2011057-21kworker/u8:3+events_unbound19:30:223
4072391992018,2cyclictest117155-21kworker/u8:2+flush-259:023:05:253
4072391992017,2cyclictest4186012-21kworker/u8:1+events_unbound21:30:273
4072391992017,2cyclictest2011057-21kworker/u8:3+flush-259:020:01:323
4072391992017,2cyclictest18778-21kworker/u8:4+events_unbound22:00:273
4072391992016,3cyclictest4098249-21kworker/u8:1+events_unbound19:51:273
4072391992016,3cyclictest132871-21kworker/u8:0+events_unbound00:35:223
4072387992018,2cyclictest18778-21kworker/u8:4+flush-259:022:40:252
4072387992017,2cyclictest4134836-21kworker/u8:2+flush-259:020:25:192
4072387992017,2cyclictest4118901-21kworker/u8:0+flush-259:020:05:302
4072387992017,2cyclictest18778-21kworker/u8:4+events_unbound21:25:142
4072387992017,2cyclictest18778-21kworker/u8:4+events_unbound21:25:142
4072387992017,2cyclictest132871-21kworker/u8:0+events_unbound00:20:172
4072387992016,3cyclictest4186012-21kworker/u8:1+events_unbound21:55:162
4072387992016,3cyclictest4186012-21kworker/u8:1+events_unbound21:45:022
4072387992015,3cyclictest4192237-21cat21:05:012
4072387992014,4cyclictest335557-21systemd-journal21:35:002
4072382992018,2cyclictest4108246-21kworker/u8:2+events_unbound19:42:281
4072382992017,2cyclictest4186012-21kworker/u8:1+flush-259:021:10:241
4072391991916,2cyclictest65303-21kworker/u8:0+events_unbound22:45:283
4072391991916,2cyclictest55174-21kworker/u8:2+events_unbound22:05:133
4072391991916,2cyclictest29135-21kworker/u8:0+events_unbound21:35:173
4072391991916,2cyclictest2011057-21kworker/u8:3+events_unbound19:35:203
4072391991916,2cyclictest117003-21kworker/u8:1+events_unbound23:15:163
4072387991916,2cyclictest4134836-21kworker/u8:2+events_unbound20:45:162
4072387991915,3cyclictest4160649-21kworker/u8:0+events_unbound20:40:152
4072387991914,4cyclictest2011057-21kworker/u8:3+flush-259:019:25:212
4072382991916,2cyclictest18778-21kworker/u8:4+events_unbound23:05:001
4072382991916,2cyclictest132871-21kworker/u8:0+flush-259:023:55:211
4072382991915,3cyclictest4098249-21kworker/u8:1+events_unbound20:20:301
4072382991915,3cyclictest335557-21systemd-journal20:27:221
4072382991914,4cyclictest4082958-21apt-get19:20:141
4072378991914,3cyclictest335557-21systemd-journal19:46:570
4072391991815,2cyclictest4186012-21kworker/u8:1+events_unbound21:12:343
4072391991815,2cyclictest4134836-21kworker/u8:2+events_unbound20:44:273
4072391991815,2cyclictest138951-21kworker/u8:3+flush-259:023:29:313
4072391991815,2cyclictest138951-21kworker/u8:3+flush-259:023:29:313
4072391991814,3cyclictest4134836-21kworker/u8:2+flush-259:020:49:093
4072391991814,3cyclictest4108246-21kworker/u8:2+events_unbound19:41:293
4072391991814,3cyclictest132871-21kworker/u8:0+events_unbound23:30:143
4072391991813,4cyclictest133243-21base6423:15:003
4072387991815,3cyclictest4176154-21kworker/u8:3+flush-259:021:00:152
4072387991815,2cyclictest159576-21kworker/u8:2+events_unbound00:10:282
4072387991814,3cyclictest2011057-21kworker/u8:3+events_unbound19:20:222
4072382991815,2cyclictest65303-21kworker/u8:0+events_unbound22:25:271
4072382991815,2cyclictest4186012-21kworker/u8:1+events_unbound21:48:291
4072382991814,3cyclictest500-21systemd-logind22:35:191
4072382991813,4cyclictest4077505-21latency_hist19:15:011
4072382991812,4cyclictest4124462-21latency_hist20:00:011
4072378991814,3cyclictest4160649-21kworker/u8:0+flush-259:020:45:270
4072378991814,3cyclictest3041-21kworker/u8:0+flush-259:021:16:580
4072378991814,3cyclictest133785-21apt-get23:15:140
4072378991812,4cyclictest55174-21kworker/u8:2+events_unbound22:00:170
4072378991812,4cyclictest509-21rs:main0
4072391991714,2cyclictest2011057-21kworker/u8:3+flush-259:019:20:293
4072391991713,3cyclictest335557-21systemd-journal21:52:403
4072391991713,3cyclictest176125-21apt-get23:55:133
4072387991714,2cyclictest91217-21kworker/u8:5+events_unbound22:50:292
4072387991714,2cyclictest4186012-21kworker/u8:1+flush-259:021:50:322
4072387991714,2cyclictest29135-21kworker/u8:0+flush-259:021:35:272
4072387991714,2cyclictest1039544-21kworker/u8:0+events_unbound19:10:222
4072387991713,3cyclictest4160649-21kworker/u8:0+flush-259:020:35:192
4072387991713,3cyclictest117155-21kworker/u8:2+events_unbound23:06:272
4072387991713,3cyclictest117003-21kworker/u8:1+flush-259:023:20:132
4072387991713,3cyclictest117003-21kworker/u8:1+events_unbound23:35:242
4072382991714,2cyclictest4176154-21kworker/u8:3+events_unbound21:00:001
4072382991713,3cyclictest4134836-21kworker/u8:2+events_unbound20:45:231
4072382991713,1cyclictest0-21swapper/123:50:001
4072382991712,4cyclictest132871-21kworker/u8:0+events_unbound23:51:281
4072382991711,4cyclictest4072332-21latency_hist19:10:011
4072382991711,4cyclictest4072332-21latency_hist19:10:001
407237899177,8cyclictest0-21swapper/021:05:180
4072378991714,2cyclictest60350irq/132-enp0s29f1:rx-021:50:140
4072378991714,2cyclictest60350irq/132-enp0s29f1:rx-019:55:290
4072378991713,3cyclictest60350irq/132-enp0s29f1:rx-022:20:120
4072378991712,4cyclictest335557-21systemd-journal22:40:270
4072378991712,3cyclictest335557-21systemd-journal21:10:270
4072391991613,2cyclictest4186012-21kworker/u8:1+events_unbound21:55:183
4072391991613,2cyclictest3242-21cron21:10:003
4072391991613,2cyclictest18778-21kworker/u8:4+events_unbound21:26:273
4072391991613,2cyclictest18778-21kworker/u8:4+events_unbound21:26:273
4072391991613,2cyclictest0-21swapper/321:05:003
4072391991612,2cyclictest0-21swapper/320:10:003
4072387991613,2cyclictest65303-21kworker/u8:0+flush-259:022:30:312
4072387991613,2cyclictest132871-21kworker/u8:0+flush-259:000:30:242
4072387991612,3cyclictest4087909-21kworker/u8:0+flush-259:019:40:182
4072387991612,3cyclictest18778-21kworker/u8:4+events_unbound23:00:212
4072382991613,2cyclictest2011057-21kworker/u8:3+events_unbound20:15:011
4072382991613,2cyclictest159576-21kworker/u8:2+events_unbound00:11:021
4072382991613,2cyclictest132871-21kworker/u8:0+flush-259:000:15:151
4072382991612,3cyclictest18778-21kworker/u8:4+events_unbound21:57:291
4072378991614,1cyclictest60350irq/132-enp0s29f1:rx-023:10:050
4072378991614,1cyclictest60350irq/132-enp0s29f1:rx-020:17:510
4072378991613,2cyclictest60350irq/132-enp0s29f1:rx-022:15:250
4072378991613,2cyclictest60350irq/132-enp0s29f1:rx-021:40:190
4072378991613,2cyclictest60350irq/132-enp0s29f1:rx-019:20:000
4072378991611,4cyclictest91217-21kworker/u8:5+flush-259:022:50:240
4072378991610,4cyclictest69612-21ntpq22:10:220
4072391991512,2cyclictest119718-21kthreadcore23:00:183
4072391991511,3cyclictest4098249-21kworker/u8:1+events_unbound19:57:103
4072391991510,4cyclictest4135057-21/usr/sbin/munin20:10:153
4072387991513,2cyclictest4134836-21kworker/u8:2+events_unbound20:50:282
4072387991512,2cyclictest132871-21kworker/u8:0+events_unbound23:55:212
4072387991512,2cyclictest117155-21kworker/u8:2+events_unbound23:28:042
4072387991512,2cyclictest117155-21kworker/u8:2+events_unbound23:28:042
4072387991512,2cyclictest0-21swapper/219:50:002
4072387991511,3cyclictest4160649-21kworker/u8:0+flush-259:020:55:152
4072387991511,3cyclictest4098249-21kworker/u8:1+events_unbound20:11:292
4072387991511,3cyclictest4077532-21kworker/u8:2+events_unbound19:15:232
4072387991511,3cyclictest132871-21kworker/u8:0+flush-259:000:05:202
4072387991511,3cyclictest132871-21kworker/u8:0+events_unbound00:27:342
4072387991510,3cyclictest4160625-21latency_hist20:35:002
407238299159,4cyclictest4186012-21kworker/u8:1+flush-259:021:33:321
4072382991511,3cyclictest18778-21kworker/u8:4+events_unbound22:00:071
4072382991511,3cyclictest132871-21kworker/u8:0+events_unbound00:30:021
4072378991513,1cyclictest60350irq/132-enp0s29f1:rx-023:20:130
4072378991513,1cyclictest60350irq/132-enp0s29f1:rx-022:33:260
4072378991513,1cyclictest60350irq/132-enp0s29f1:rx-019:35:100
4072378991513,1cyclictest60350irq/132-enp0s29f1:rx-019:20:590
4072378991512,2cyclictest60350irq/132-enp0s29f1:rx-023:25:210
4072378991512,2cyclictest60350irq/132-enp0s29f1:rx-023:25:200
4072378991512,2cyclictest60350irq/132-enp0s29f1:rx-021:35:240
4072378991512,2cyclictest60350irq/132-enp0s29f1:rx-019:40:290
4072378991512,2cyclictest217587-21latency_hist00:35:000
4072378991511,3cyclictest4160649-21kworker/u8:0+flush-259:020:35:260
4072378991511,3cyclictest4134836-21kworker/u8:2+flush-259:020:25:200
4072378991511,2cyclictest4150309-21sh20:25:010
407239199149,4cyclictest335557-21systemd-journal23:45:003
4072391991411,2cyclictest4134836-21kworker/u8:2+events_unbound20:25:283
4072391991410,3cyclictest132871-21kworker/u8:0+events_unbound00:05:023
4072387991412,1cyclictest0-21swapper/222:59:592
4072387991411,2cyclictest65303-21kworker/u8:0+events_unbound22:35:242
4072387991411,2cyclictest4186012-21kworker/u8:1+events_unbound21:40:112
4072387991411,2cyclictest18778-21kworker/u8:4+events_unbound22:17:472
4072387991411,2cyclictest159576-21kworker/u8:2+events_unbound23:49:282
4072387991411,2cyclictest117003-21kworker/u8:1+flush-259:023:10:252
4072382991411,3cyclictest2011057-21kworker/u8:3+events_unbound19:33:271
4072382991411,2cyclictest2011057-21kworker/u8:3+events_unbound19:25:211
4072382991411,2cyclictest0-21swapper/119:55:011
4072382991410,3cyclictest18778-21kworker/u8:4+events_unbound22:06:061
407237899146,6cyclictest4185556-21ntpq20:55:220
4072378991411,2cyclictest60350irq/132-enp0s29f1:rx-022:05:140
4072378991411,2cyclictest60350irq/132-enp0s29f1:rx-021:30:220
4072378991411,2cyclictest60350irq/132-enp0s29f1:rx-000:15:160
4072378991411,2cyclictest4176154-21kworker/u8:3+flush-259:021:00:200
4072378991411,2cyclictest0-21swapper/022:50:000
4072378991410,3cyclictest60350irq/132-enp0s29f1:rx-022:25:200
4072378991410,3cyclictest132871-21kworker/u8:0+flush-259:000:36:070
4072378991410,2cyclictest4130668-21irqcore20:05:170
407239199139,3cyclictest4176154-21kworker/u8:3+events_unbound20:55:283
407239199139,3cyclictest4077532-21kworker/u8:2+events_unbound19:17:283
407239199139,3cyclictest197170-21irqcore00:15:203
407239199139,3cyclictest159576-21kworker/u8:2+flush-259:000:03:343
407239199139,3cyclictest159576-21kworker/u8:2+events_unbound23:50:213
4072391991310,2cyclictest1039544-21kworker/u8:0+flush-259:019:10:203
407238799139,3cyclictest4186012-21kworker/u8:1+events_unbound21:10:012
407238799139,3cyclictest18778-21kworker/u8:4+flush-259:022:05:242
407238799139,3cyclictest149025-21apt-get23:30:002
407238799139,3cyclictest117003-21kworker/u8:1+flush-259:023:40:232
4072387991312,1cyclictest4186012-21kworker/u8:1+events_unbound21:22:292
4072387991312,1cyclictest4186012-21kworker/u8:1+events_unbound21:22:292
4072387991311,1cyclictest0-21swapper/222:30:012
4072387991310,3cyclictest2011057-21kworker/u8:3+flush-259:019:35:222
4072387991310,2cyclictest4124826-21cpuspeed_turbos20:00:122
4072387991310,2cyclictest132871-21kworker/u8:0+flush-259:000:00:152
407238299139,3cyclictest117003-21kworker/u8:1+events_unbound23:21:521
4072378991311,1cyclictest60350irq/132-enp0s29f1:rx-022:35:210
4072378991310,2cyclictest60350irq/132-enp0s29f1:rx-023:55:220
407239199129,2cyclictest90780-21unixbench_singl22:30:253
407239199128,3cyclictest159576-21kworker/u8:2+events_unbound00:10:213
4072391991210,2cyclictest4098249-21kworker/u8:1+events_unbound20:20:313
407238799128,3cyclictest18778-21kworker/u8:4+flush-259:022:02:492
407238799128,3cyclictest18778-21kworker/u8:4+events_unbound22:20:282
407238299126,4cyclictest4108829-21apt-get19:45:141
407238799119,1cyclictest0-21swapper/222:47:542
407238799118,2cyclictest117003-21kworker/u8:1+flush-259:023:15:202
407239199106,3cyclictest4160649-21kworker/u8:0+flush-259:020:51:383
407238799107,2cyclictest132871-21kworker/u8:0+flush-259:023:50:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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