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2026-08-18 - 17:17

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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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  Intel
Click here to display the system's profile data or here to proceed to next system.
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, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rack5slot4s.osadl.org (updated Tue Aug 18, 2026 00:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
76599223410,2sleep3481ktimers/320:17:503
93641223340,2sleep3575-21kworker/3:2-events23:10:013
9956332840,4chrt995628-21unixbench_multi00:07:592
7465712640,4sleep3575-21kworker/3:2-events19:57:563
695470996156,3cyclictest786645-21kworker/u8:0+events_unbound21:02:581
695470996156,3cyclictest786645-21kworker/u8:0+events_unbound21:02:581
695470996152,6cyclictest936121-21kworker/u8:3+events_unbound23:12:501
695470995649,5cyclictest275-21systemd-journal00:10:011
695470995344,7cyclictest896216-21latency_hist22:30:001
695468995346,5cyclictest965976-21apt-get23:40:010
8573642520,3chrt0-21swapper/221:52:432
695478995243,7cyclictest806836-21apt-get21:00:002
695470995239,10cyclictest275-21systemd-journal23:27:041
8881492510,2chrt471rcuc/322:22:463
695468995142,7cyclictest717148-21latency_hist19:30:010
695470995045,3cyclictest727300-21kworker/u8:0+events_unbound20:15:011
695470994844,3cyclictest816960-21kworker/u8:2+flush-8:021:22:571
695470994842,4cyclictest871298-21kworker/u8:2+flush-8:022:47:571
695470994842,4cyclictest871298-21kworker/u8:2+flush-8:022:47:571
695470994842,4cyclictest841562-21kworker/u8:4+events_unbound21:47:561
695470994840,6cyclictest961060-21kworker/u8:1+flush-8:023:37:521
9475562470,5sleep20-21swapper/223:22:442
9187242470,2sleep3575-21kworker/3:2+events22:52:483
695470994743,3cyclictest961060-21kworker/u8:1+events_unbound00:32:581
695470994742,3cyclictest675733-21kworker/u8:1+events_unbound19:12:511
695470994738,6cyclictest781902-21latency_hist20:35:011
695470994733,10cyclictest275-21systemd-journal22:03:041
695468994737,7cyclictest700342-21latency_hist19:15:010
695470994642,2cyclictest653652-21kworker/u8:2+events_unbound19:22:411
695470994641,4cyclictest936121-21kworker/u8:3+events_unbound00:22:411
695470994640,5cyclictest3558332-21kworker/u8:4+flush-8:019:27:511
695470994640,4cyclictest841562-21kworker/u8:4+events_unbound21:57:391
695470994640,4cyclictest792254-21kworker/u8:3+flush-8:021:08:001
695470994540,3cyclictest961060-21kworker/u8:1+events_unbound00:17:421
695470994538,5cyclictest801903-21latency_hist20:55:001
695468994537,6cyclictest906621-21latency_hist22:40:010
695470994440,3cyclictest3558332-21kworker/u8:4+events_unbound20:07:521
695470994439,4cyclictest871298-21kworker/u8:2+events_unbound22:52:411
695470994436,6cyclictest841562-21kworker/u8:4+flush-8:021:42:561
695470994433,8cyclictest275-21systemd-journal23:40:011
695470994339,3cyclictest916331-21kworker/u8:1+events_unbound23:02:411
695470994339,3cyclictest792254-21kworker/u8:3+events_unbound21:27:421
695470994337,4cyclictest961060-21kworker/u8:1+flush-8:023:52:581
695470994337,4cyclictest792254-21kworker/u8:3+events_unbound21:12:521
695470994336,5cyclictest871298-21kworker/u8:2+flush-8:023:32:541
695470994237,3cyclictest871298-21kworker/u8:2+flush-8:023:17:471
695470994236,4cyclictest816960-21kworker/u8:2+events_unbound21:17:491
695470994136,3cyclictest871298-21kworker/u8:2+events_unbound22:07:481
695470994136,3cyclictest786645-21kworker/u8:0+flush-8:020:47:541
695470994136,3cyclictest766436-21kworker/u8:1+events_unbound21:00:001
695470994135,4cyclictest901257-21kworker/u8:4+events_unbound22:37:471
695470994135,4cyclictest3558332-21kworker/u8:4+events_unbound20:37:431
695470994133,6cyclictest702724-21apt-get19:17:391
695470994133,6cyclictest653652-21kworker/u8:2+flush-8:020:42:511
695468994133,6cyclictest986425-21/usr/sbin/munin00:02:500
69546899411,38cyclictest1-21systemd21:19:040
695470994035,3cyclictest886556-21kworker/u8:3+events_unbound22:25:001
695470994034,5cyclictest727300-21kworker/u8:0+events_unbound19:45:021
695470994032,6cyclictest961060-21kworker/u8:1+events_unbound00:02:551
695470994031,7cyclictest275-21systemd-journal23:45:051
695468994034,5cyclictest879115-21kworker/u8:0+events_unbound23:27:420
695468994034,4cyclictest841562-21kworker/u8:4+flush-8:021:57:570
695468994033,5cyclictest796231-21ntpq20:47:530
695468994032,6cyclictest901412-21apt-get22:35:000
695468994030,8cyclictest786061-21ntpq20:37:520
695470993935,3cyclictest3558332-21kworker/u8:4+events_unbound20:00:011
695470993934,4cyclictest3558332-21kworker/u8:4+events_unbound19:32:441
695470993933,4cyclictest879115-21kworker/u8:0+flush-8:022:42:581
695470993933,4cyclictest871298-21kworker/u8:2+flush-8:022:57:521
695468993933,4cyclictest1015740-21http00:30:010
695470993833,4cyclictest721983-21kworker/u8:1+events_unbound19:37:401
695470993833,3cyclictest871298-21kworker/u8:2+events_unbound23:57:501
695470993831,4cyclictest275-21systemd-journal22:19:041
6951472383,9sleep10-21swapper/119:08:111
695470993732,4cyclictest1010768-21kworker/u8:0+events_unbound00:37:561
695470993732,3cyclictest861552-21kworker/u8:1+events_unbound22:12:461
695470993630,4cyclictest792254-21kworker/u8:3+events_unbound21:32:481
695468993626,8cyclictest811263-21ntpq21:02:520
695468993626,8cyclictest811263-21ntpq21:02:520
695470993531,3cyclictest936121-21kworker/u8:3+flush-8:000:27:501
695470993530,4cyclictest879115-21kworker/u8:0+flush-8:023:22:441
695470993530,4cyclictest766436-21kworker/u8:1+events_unbound20:27:431
695468993529,4cyclictest856442-21kworker/u8:0+events_unbound22:02:180
695470993429,3cyclictest816960-21kworker/u8:2+events_unbound21:37:481
695470993429,3cyclictest766436-21kworker/u8:1+flush-8:020:17:581
695470993428,4cyclictest871298-21kworker/u8:2+flush-8:000:12:561
695470993427,6cyclictest727300-21kworker/u8:0+events_unbound19:42:421
695470993427,5cyclictest841562-21kworker/u8:4+flush-8:021:52:581
695470993426,6cyclictest751993-21apt-get20:05:011
695468993424,8cyclictest792254-21kworker/u8:3+flush-8:021:32:470
695468993424,8cyclictest1025080-21ntpq00:37:500
695470993326,6cyclictest727300-21kworker/u8:0+events_unbound19:52:441
695468993325,6cyclictest275-21systemd-journal20:08:040
695470993228,3cyclictest871298-21kworker/u8:2+flush-8:022:30:361
695468993222,8cyclictest761400-21ntpq20:12:520
695468993222,4cyclictest916331-21kworker/u8:1+flush-8:023:02:390
695478993121,8cyclictest896582-21cat22:30:012
695470993127,3cyclictest766436-21kworker/u8:1+flush-8:020:20:051
695468993126,3cyclictest926400-21systemd-run23:00:010
695468993126,3cyclictest816927-21cron21:10:000
695468993120,8cyclictest275-21systemd-journal22:55:000
695478993024,4cyclictest841436-21unixbench_multi21:33:012
695470993025,3cyclictest916331-21kworker/u8:1+events_unbound23:07:491
695468993021,7cyclictest996320-21/usr/sbin/munin00:12:590
695468993020,8cyclictest890562-21ntpq22:22:510
695468993020,8cyclictest275-21systemd-journal22:50:000
695468993020,8cyclictest275-21systemd-journal22:50:000
695468993018,9cyclictest275-21systemd-journal20:05:000
69546899301,27cyclictest940461-21ntpq23:12:500
695478992924,3cyclictest727600-21aten2_r5power_v19:42:402
695468992922,5cyclictest653652-21kworker/u8:2+events_unbound20:42:520
695478992823,3cyclictest776677-21unixbench_multi20:27:592
695468992825,2cyclictest986021-21systemd-run00:00:000
695468992818,3cyclictest421rcuog/200:10:000
695478992723,2cyclictest936778-21aten2_r5power_e23:12:392
695478992722,3cyclictest976095-21sh23:50:002
69546899272,24cyclictest0-21swapper/020:32:580
695468992722,3cyclictest1015717-21cron00:30:000
695468992716,9cyclictest0-21swapper/020:00:000
695468992716,8cyclictest741406-21ntpq19:52:510
6907262272,5sleep00-21swapper/019:06:170
695478992623,2cyclictest771733-21unixbench_multi20:23:002
695478992622,2cyclictest922008-21aten2_r5power_v22:57:412
695478992622,2cyclictest762835-21fschecks_count20:17:442
695478992622,2cyclictest706948-21unixbench_multi19:18:002
695468992622,3cyclictest946138-21cron23:20:000
695468992618,6cyclictest275-21systemd-journal22:45:000
695468992617,7cyclictest776942-21latency_hist20:30:010
695468992611,5cyclictest0-21swapper/020:22:480
69546899260,24cyclictest934221-21grep23:07:490
695478992521,2cyclictest931073-21unixbench_multi23:02:582
695478992521,2cyclictest0-21swapper/222:20:002
695478992520,3cyclictest742627-21aten2_r5power_e19:57:392
695468992520,3cyclictest0-21swapper/021:22:590
695468992519,4cyclictest727300-21kworker/u8:0+flush-8:019:47:430
695468992514,9cyclictest732008-21awk19:45:000
695468992510,11cyclictest571-21snmpd22:27:410
695478992421,2cyclictest1020612-21unixbench_multi00:33:012
695478992420,3cyclictest777451-21aten2_r5power_e20:32:422
695478992419,3cyclictest847508-21fschecks_time21:42:452
695478992419,3cyclictest821918-21cron21:14:592
695478992417,5cyclictest901661-21gpgv22:35:002
69546899242,1cyclictest0-21swapper/021:47:580
695468992420,2cyclictest0-21swapper/020:52:430
695468992420,2cyclictest0-21swapper/019:22:040
695468992419,3cyclictest881905-21aten2_r5power_v22:17:410
695468992418,4cyclictest1005532-21unixbench_multi00:17:590
695468992414,8cyclictest846011-21ntpq21:37:520
695478992319,3cyclictest965705-21unixbench_multi23:37:582
695478992318,4cyclictest747845-21cut20:02:442
695478992314,7cyclictest996660-21fschecks_time00:12:462
695468992319,2cyclictest836744-21cron21:30:000
695468992319,2cyclictest0-21swapper/019:15:040
695468992318,3cyclictest0-21swapper/021:15:000
695468992318,3cyclictest0-21swapper/019:32:470
695468992317,4cyclictest961060-21kworker/u8:1+events_unbound23:42:420
695468992312,9cyclictest872148-21diskstats22:07:430
69546899230,19cyclictest950446-21ntpq23:22:510
695478992218,3cyclictest985965-21idleruntime-cro00:00:002
695478992218,3cyclictest732945-21fschecks_count19:47:432
695478992218,2cyclictest866503-21systemctl22:00:002
695478992217,3cyclictest1015833-21apt-config00:30:002
695468992220,1cyclictest0-21swapper/021:42:590
7326972210,2sleep3471rcuc/319:47:413
695468992117,3cyclictest0-21swapper/000:25:000
695468992116,3cyclictest0-21swapper/021:00:000
695468992112,7cyclictest960748-21sed23:32:590
695468992110,9cyclictest762795-21diskstats20:17:430
10201882210,4sleep30-21swapper/300:32:553
69547899202,17cyclictest0-21swapper/200:37:562
695478992017,2cyclictest867255-21fschecks_count22:02:452
695478992017,2cyclictest722882-21fschecks_time19:37:422
695478992016,3cyclictest0-21swapper/219:15:012
695478992016,2cyclictest0-21swapper/223:52:512
695478992016,2cyclictest0-21swapper/200:20:002
695478992012,7cyclictest932101-21fschecks_time23:07:432
695478992012,6cyclictest956801-21fschecks_count23:32:442
695468992016,2cyclictest0-21swapper/023:52:480
695468992016,2cyclictest0-21swapper/022:12:480
695468992015,3cyclictest727046-21sendmail19:40:000
695468992014,3cyclictest0-21swapper/023:47:530
695468992012,6cyclictest857023-21/usr/sbin/munin21:52:570
69547899192,16cyclictest0-21swapper/221:22:582
695478991916,2cyclictest756946-21unixbench_singl20:07:592
695478991914,4cyclictest907442-21fschecks_time22:42:432
695478991914,3cyclictest0-21swapper/221:27:592
695478991911,7cyclictest786587-21unixbench_singl20:38:002
695478991911,7cyclictest712974-21fschecks_time19:27:422
695478991911,6cyclictest889140-21seq22:22:472
695478991910,7cyclictest758710-21tr20:12:462
6906422193,9sleep30-21swapper/319:05:123
69547899189,7cyclictest986717-21fschecks_count00:02:432
69547899189,7cyclictest717889-21fschecks_count19:32:442
69547899189,7cyclictest710347-21tr19:22:482
69547899188,8cyclictest737927-21fschecks_time19:52:422
695478991814,3cyclictest275-21systemd-journal21:05:002
695478991814,3cyclictest275-21systemd-journal21:05:002
695478991812,4cyclictest0-21swapper/221:37:482
695478991811,6cyclictest966969-21fschecks_count23:42:432
695478991810,7cyclictest917228-21fschecks_count22:52:432
695478991810,7cyclictest792728-21fschecks_count20:47:432
695478991810,6cyclictest797735-21fschecks_time20:52:442
6906662184,10sleep20-21swapper/219:05:312
69547899179,6cyclictest905464-21tr22:37:502
695478991713,2cyclictest0-21swapper/221:20:012
69547899162,2cyclictest0-21swapper/200:22:122
69547899162,13cyclictest0-21swapper/223:19:062
69547899162,13cyclictest0-21swapper/220:44:322
695478991612,2cyclictest0-21swapper/223:27:572
695478991612,2cyclictest0-21swapper/222:12:432
695478991612,2cyclictest0-21swapper/221:07:432
695478991611,3cyclictest914168-21kthreadcore22:47:482
695478991611,3cyclictest914168-21kthreadcore22:47:482
695478991611,3cyclictest0-21swapper/222:07:482
695478991611,3cyclictest0-21swapper/221:47:472
7917622154,8sleep30-21swapper/320:45:003
8991532140,3sleep3575-21kworker/3:2+mm_percpu_wq22:32:493
9834382133,6sleep30-21swapper/323:57:493
9251332134,6sleep30-21swapper/322:57:503
8360322135,5sleep30-21swapper/321:27:543
8112732132,7sleep30-21swapper/321:02:543
8112732132,7sleep30-21swapper/321:02:543
7720542132,6sleep30-21swapper/320:25:023
7515042132,7sleep30-21swapper/320:02:593
7221082132,6sleep30-21swapper/319:35:023
9959152122,5sleep30-21swapper/300:10:013
9765502122,6sleep30-21swapper/323:52:403
9711832122,5sleep30-21swapper/323:45:013
9664522122,6sleep30-21swapper/323:40:043
9659582122,6sleep30-21swapper/323:40:003
9466142122,6sleep30-21swapper/323:22:383
9364122122,5sleep30-21swapper/323:10:023
9267872122,6sleep30-21swapper/323:02:283
9122652122,6sleep30-21swapper/322:47:433
9122652122,6sleep30-21swapper/322:47:433
9104242122,6sleep30-21swapper/322:42:493
9023412122,6sleep30-21swapper/322:37:443
8854042122,6sleep30-21swapper/322:17:493
8772242122,6sleep30-21swapper/322:12:443
8714722122,5sleep30-21swapper/322:05:013
8657262122,6sleep30-21swapper/321:57:513
8570522122,6sleep30-21swapper/321:52:413
8557072122,6sleep30-21swapper/321:47:523
8467202122,6sleep30-21swapper/321:40:013
8272942122,6sleep30-21swapper/321:22:403
8263492122,6sleep30-21swapper/321:17:543
8125032122,6sleep30-21swapper/321:07:433
8059482122,6sleep30-21swapper/320:57:523
7862462122,6sleep30-21swapper/320:37:583
7776382122,6sleep30-21swapper/320:32:443
7611972122,6sleep30-21swapper/320:12:503
7569282122,6sleep30-21swapper/320:08:003
7115352122,6sleep30-21swapper/319:22:543
10215642122,6sleep30-21swapper/300:37:423
10067832122,6sleep30-21swapper/300:22:453
9911832112,6sleep30-21swapper/300:05:043
9862202112,5sleep30-21swapper/300:00:023
9562832112,6sleep30-21swapper/323:30:043
9515162112,6sleep30-21swapper/323:27:163
9414592112,6sleep30-21swapper/323:15:083
8915082112,6sleep30-21swapper/322:25:083
8667432112,6sleep30-21swapper/322:00:083
8419962112,6sleep30-21swapper/321:35:563
8369702112,5sleep30-21swapper/321:30:023
8172072112,6sleep30-21swapper/321:10:323
7971312112,5sleep30-21swapper/320:50:023
7922362112,6sleep30-21swapper/320:45:043
7675032112,5sleep30-21swapper/320:22:413
7413862112,5sleep30-21swapper/319:52:513
7273972112,6sleep30-21swapper/319:41:483
7213192112,5sleep30-21swapper/319:32:533
7130332112,5sleep30-21swapper/319:27:433
7019562111,6sleep30-21swapper/319:15:033
6956112112,6sleep30-21swapper/319:10:183
10116222112,5sleep30-21swapper/300:27:473
10010502113,5sleep30-21swapper/300:15:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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