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2026-08-04 - 18:34

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 04, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
256125622320,2sleep3575-21kworker/3:2-events11:03:003
256125622320,2sleep3575-21kworker/3:2-events11:03:003
25223932660,6sleep3451irq_work/310:25:003
2326686995447,5cyclictest2627000-21base6412:10:002
25507402510,2chrt291ktimers/110:52:591
24664322510,4chrt0-21swapper/309:27:593
2326686994941,6cyclictest275-21systemd-journal11:10:002
2326679994729,15cyclictest2597030-21latency_hist11:40:010
2326679994641,4cyclictest2358314-21kworker/u8:0+flush-8:007:45:000
2326679994641,4cyclictest2358314-21kworker/u8:0+flush-8:007:45:000
2326679994524,18cyclictest2437919-21latency_hist09:00:010
2326679994413,16cyclictest0-21swapper/009:37:510
2326684994235,5cyclictest2388045-21apt-get08:10:001
2326679994219,20cyclictest2587597-21/usr/sbin/munin11:33:030
2326679994124,15cyclictest2461855-21needreboot09:23:020
2326679994120,19cyclictest2442874-21latency_hist09:05:010
2326679994117,21cyclictest2637029-21latency_hist12:20:000
2326679994117,21cyclictest2637029-21latency_hist12:20:000
2326679994031,6cyclictest2646898-21latency_hist12:30:010
2326686993933,5cyclictest2358314-21kworker/u8:0+flush-8:007:48:102
2326686993933,4cyclictest2398174-21apt-get08:20:002
232667999398,5cyclictest0-21swapper/007:57:550
2326679993912,14cyclictest0-21swapper/008:23:110
2326679993823,13cyclictest2602162-21latency_hist11:45:010
2326679993821,15cyclictest2348110-21unixbench_multi07:28:090
2326679993811,15cyclictest0-21swapper/010:35:270
2326684993728,6cyclictest2592096-21latency_hist11:35:011
2326684993726,8cyclictest275-21systemd-journal09:50:001
2326684993725,8cyclictest275-21systemd-journal10:40:381
2326679993718,17cyclictest2612067-21cron11:55:000
2326679993716,19cyclictest2653640-21cut12:37:580
2326684993631,4cyclictest2388511-21kworker/u8:3+flush-8:008:12:531
2326684993630,4cyclictest2388511-21kworker/u8:3+flush-8:008:23:091
2326684993629,5cyclictest2562667-21kworker/u8:0+events_unbound12:08:061
2326679993624,10cyclictest2482617-21cron09:45:000
2326684993523,9cyclictest2546928-21ntpq10:48:041
2326679993520,13cyclictest2517445-21sendmail10:20:010
232667999351,9cyclictest2456786-21/usr/sbin/munin09:18:020
2326684993429,3cyclictest2553016-21apt-get10:57:481
232667999348,2cyclictest0-21swapper/012:12:540
2326679993426,6cyclictest275-21systemd-journal08:45:000
2326679993426,6cyclictest2452745-21latency_hist09:15:010
2326679993416,16cyclictest0-21swapper/011:07:580
2326679993416,16cyclictest0-21swapper/008:12:500
2326679993416,16cyclictest0-21swapper/008:10:000
2326679993416,15cyclictest2577270-21latency_hist11:20:010
2326679993415,17cyclictest2506487-21kthreadcore10:08:020
2326679993415,17cyclictest0-21swapper/011:48:030
2326679993414,18cyclictest0-21swapper/010:05:010
2326679993414,18cyclictest0-21swapper/007:30:570
232667999341,12cyclictest2413696-21apt-get08:37:510
2326686993327,3cyclictest2499049-21kthreadcore10:02:592
2326684993324,7cyclictest2337736-21ntpq07:18:011
2326679993319,12cyclictest275-21systemd-journal11:30:000
2326679993318,13cyclictest2528510-21fschecks_count10:32:540
2326679993318,13cyclictest0-21swapper/007:37:540
2326679993316,15cyclictest0-21swapper/007:13:090
2326679993315,16cyclictest0-21swapper/012:10:000
2326679993314,17cyclictest2409350-21sort08:32:580
232667999331,3cyclictest2447133-21ntp_states09:08:050
2326684993227,4cyclictest2368258-21kworker/u8:2+flush-8:008:32:561
2326684993227,3cyclictest2374382-21irqrtprio07:57:551
2326684993224,6cyclictest2532752-21latency_hist10:35:011
2326684993223,6cyclictest2447783-21latency_hist09:10:011
232667999329,7cyclictest2337655-21cat07:18:000
232667999326,8cyclictest2493421-21grep09:57:530
232667999325,14cyclictest2544400-21cut10:47:580
232667999323,7cyclictest2368997-21fschecks_count07:52:550
232667999322,9cyclictest2432307-21ntpq08:53:010
232667999322,27cyclictest0-21swapper/007:10:010
2326679993215,15cyclictest851-21mta-sts-daemon08:03:050
2326679993214,16cyclictest0-21swapper/008:17:590
2326679993213,18cyclictest0-21swapper/007:48:100
2326679993212,18cyclictest2578283-21cut11:22:550
232667999321,10cyclictest2466796-21ntpq09:28:010
2326679993210,5cyclictest2559203-21cut11:02:580
2326679993210,5cyclictest2559203-21cut11:02:580
23220782324,10sleep20-21swapper/207:07:412
2326686993122,7cyclictest2601981-21apt-get11:45:002
2326684993123,6cyclictest2289415-21kworker/u8:1+flush-8:007:38:101
2326684993122,7cyclictest2471785-21ntpq09:33:041
2326684993120,8cyclictest275-21systemd-journal09:35:381
232667999316,23cyclictest2551598-21cut10:52:590
232667999311,9cyclictest2618250-21ps12:02:580
232667999311,9cyclictest2526827-21ntpq10:28:020
232667999311,9cyclictest2472048-21python309:33:100
2326679993117,12cyclictest0-21swapper/008:50:000
2326679993113,16cyclictest401-21dbus-daemon10:45:000
23220702313,5sleep10-21swapper/107:07:351
2326684993025,3cyclictest1-21systemd11:45:001
232667999309,3cyclictest0-21swapper/010:12:500
232667999301,9cyclictest2342718-21ntpq07:23:030
2326679993015,13cyclictest2617034-21sh12:00:000
2326679993013,15cyclictest0-21swapper/010:22:540
2326679993011,2cyclictest0-21swapper/010:57:580
2326679993010,7cyclictest2640351-21cut12:22:580
2326686992922,5cyclictest2597024-21ls11:40:012
2326684992923,4cyclictest2437744-21unixbench_singl08:58:091
2326684992923,3cyclictest0-21swapper/108:05:011
2326684992922,5cyclictest2358314-21kworker/u8:0+flush-8:007:47:551
2326684992918,8cyclictest275-21systemd-journal11:39:381
2326684992917,9cyclictest2331610-21latency_hist07:15:011
2326679992913,14cyclictest0-21swapper/011:12:590
2326679992910,2cyclictest0-21swapper/012:32:590
24628482280,6sleep2371rcuc/209:25:012
2326684992824,2cyclictest2584847-21kthreadcore11:28:001
2326684992823,3cyclictest2442157-21ntpq09:03:031
2326684992822,4cyclictest2413696-21apt-get08:37:491
232667999288,6cyclictest2489960-21cut09:52:580
2326679992810,2cyclictest0-21swapper/009:48:000
232667999280,5cyclictest2404742-21kthreadcore08:27:570
2326686992723,2cyclictest2349031-21cpuspeed_turbos07:32:532
2326686992721,4cyclictest2358314-21kworker/u8:0+events_unbound07:42:402
2326686992721,4cyclictest2358314-21kworker/u8:0+events_unbound07:42:402
2326684992724,2cyclictest2465245-21kthreadcore09:27:581
2326684992722,3cyclictest2488955-21irqrtprio09:52:571
2326684992721,5cyclictest2299313-21kworker/u8:0+flush-8:007:28:091
2326684992720,5cyclictest2562881-21/usr/sbin/munin11:08:011
2326684992719,6cyclictest2577752-21apt-get11:22:481
2326686992623,2cyclictest2587973-21fschecks_time11:32:552
2326686992622,3cyclictest2317013-21kworker/u8:3+flush-8:007:37:582
2326686992621,4cyclictest2388511-21kworker/u8:3+events_unbound08:47:562
2326686992621,4cyclictest2299313-21kworker/u8:0+events_unbound07:18:082
2326684992622,2cyclictest2423131-21cron08:45:001
2326684992621,4cyclictest2522467-21base6410:25:001
2326684992621,3cyclictest2508936-21kthreadcore10:12:561
2326684992621,3cyclictest2497406-21unixbench_multi09:58:111
2326684992621,3cyclictest0-21swapper/111:15:011
2326684992620,4cyclictest2562667-21kworker/u8:0+flush-8:012:32:551
2326684992620,4cyclictest2433008-21latency_hist08:55:011
2326686992521,3cyclictest2568150-21fschecks_count11:12:542
232668699251,23cyclictest381ktimers/209:53:072
2326684992521,2cyclictest0-21swapper/108:27:531
2326684992520,4cyclictest2343214-21unixbench_multi07:23:101
2326684992520,3cyclictest2397982-21unixbench_singl08:18:111
2326684992520,2cyclictest0-21swapper/107:53:081
2326686992420,3cyclictest2611888-21unixbench_singl11:53:072
2326686992419,4cyclictest2388511-21kworker/u8:3+flush-8:010:13:062
2326686992412,8cyclictest2538193-21apt-get10:42:522
2326684992420,2cyclictest0-21swapper/112:28:071
2326684992419,4cyclictest2524802-21kthreadcore10:27:581
2326684992419,3cyclictest0-21swapper/110:02:531
2326684992418,4cyclictest2368258-21kworker/u8:2+flush-8:012:37:541
2326686992317,4cyclictest2358314-21kworker/u8:0+flush-8:008:41:082
232668499236,3cyclictest26150392tr11:58:001
2326684992319,2cyclictest0-21swapper/110:08:091
2326684992319,2cyclictest0-21swapper/109:45:001
2326684992318,4cyclictest2516794-21ntpq10:18:061
2326684992318,3cyclictest0-21swapper/112:12:561
2326684992317,3cyclictest0-21swapper/111:02:501
2326684992317,3cyclictest0-21swapper/111:02:491
2326684992316,5cyclictest2451880-21wc09:13:021
232668699228,3cyclictest24964492kthreadcore09:58:012
2326686992219,2cyclictest2387850-21unixbench_singl08:08:092
2326686992218,3cyclictest2438462-21aten2_r5power_e09:02:522
2326686992218,3cyclictest2403358-21ls08:25:002
2326686992218,2cyclictest0-21swapper/209:45:002
2326686992218,2cyclictest0-21swapper/209:40:012
2326686992217,4cyclictest2562667-21kworker/u8:0+flush-8:012:27:592
2326686992217,4cyclictest2368258-21kworker/u8:2+flush-8:009:18:102
2326686992217,3cyclictest2503172-21aten2_r5power_p10:07:552
2326686992216,4cyclictest0-21swapper/210:30:002
2326684992218,2cyclictest0-21swapper/112:22:561
2326684992218,2cyclictest0-21swapper/110:38:091
2326684992218,2cyclictest0-21swapper/108:48:051
2326684992215,5cyclictest401-21dbus-daemon09:20:011
2326684992214,6cyclictest275-21systemd-journal12:15:391
2326684992214,6cyclictest275-21systemd-journal12:15:381
2326684992212,7cyclictest275-21systemd-journal11:55:001
24160142210,2sleep3575-21kworker/3:2-events08:38:003
232668699212,13cyclictest2483330-21apt-get09:47:522
232668699212,13cyclictest2403824-21apt-get08:27:512
2326686992117,2cyclictest0-21swapper/212:05:002
2326686992116,4cyclictest2517169-21unixbench_multi10:18:102
232668699210,9cyclictest26555051kthreadcore12:38:002
2326684992117,3cyclictest2458411-21cut09:22:541
2326684992117,3cyclictest2317013-21kworker/u8:3+flush-8:007:32:531
2326684992117,2cyclictest0-21swapper/111:20:011
2326684992116,2cyclictest0-21swapper/112:03:091
232668699202,13cyclictest2378618-21apt-get08:02:522
2326686992015,4cyclictest2368258-21kworker/u8:2+flush-8:011:23:052
2326686992011,7cyclictest2443586-21diskstats09:07:542
2326686992010,8cyclictest2605723-21tr11:48:012
2326684992016,2cyclictest2607168-21cron11:50:001
2326684992010,2cyclictest0-21swapper/107:40:381
2326684992010,2cyclictest0-21swapper/107:40:381
232668699197,5cyclictest0-21swapper/207:55:352
232668699197,4cyclictest0-21swapper/211:20:012
232668699192,12cyclictest2338966-21apt-get07:22:522
2326686991916,2cyclictest2413913-21cpuspeed_turbos08:37:522
2326686991915,2cyclictest2637731-21cpuspeed_turbos12:22:502
2326686991915,2cyclictest0-21swapper/207:30:002
232668699182,12cyclictest2408761-21apt-get08:32:522
2326686991815,2cyclictest2562427-21cron11:05:002
2326686991815,2cyclictest2562427-21cron11:05:002
2326686991814,2cyclictest2438085-21latency_hist09:00:012
2326686991812,4cyclictest2289415-21kworker/u8:1+events_unbound07:50:012
2326686991811,5cyclictest2448069-21seq09:10:472
232668699181,12cyclictest2631366-21ntpq12:13:012
232668699181,12cyclictest2548082-21apt-get10:52:512
23219272182,8sleep30-21swapper/307:05:443
23632682176,6sleep30-21swapper/307:45:003
23632682176,6sleep30-21swapper/307:45:003
232668699172,11cyclictest2616291-21ntpq11:58:022
2326686991714,2cyclictest0-21swapper/212:32:552
2326686991713,2cyclictest0-21swapper/210:25:012
2326686991712,3cyclictest2429353-21irqrtprio08:52:552
2326686991712,3cyclictest2327170-21aten2_r5power_v07:12:522
2326686991711,4cyclictest2471190-21cut09:33:012
232668699171,12cyclictest2553016-21apt-get10:57:492
232668699168,6cyclictest2533427-21sort10:37:522
232668699167,7cyclictest2587327-21sed11:30:012
2326686991613,2cyclictest0-21swapper/212:17:592
2326686991613,2cyclictest0-21swapper/212:17:592
2326686991612,3cyclictest0-21swapper/208:13:092
2326686991611,3cyclictest2463186-21aten2_r5power_p09:27:512
2326686991611,3cyclictest0-21swapper/210:47:562
24289072153,9sleep30-21swapper/308:52:533
232668699151,11cyclictest2527546-21apt-get10:30:032
24700732144,6sleep30-21swapper/309:33:013
26473682133,6sleep30-21swapper/312:32:523
25871412132,6sleep30-21swapper/311:30:013
25773322132,6sleep30-21swapper/311:20:023
25378882132,6sleep30-21swapper/310:40:023
25223932132,6sleep30-21swapper/310:25:013
23932582132,6sleep30-21swapper/308:15:023
23513792132,7sleep30-21swapper/307:33:013
26528522122,6sleep30-21swapper/312:37:593
26326432122,6sleep30-21swapper/312:17:523
26326432122,6sleep30-21swapper/312:17:523
26160972122,6sleep30-21swapper/311:58:023
26083152122,6sleep30-21swapper/311:52:563
25970102120,8sleep30-21swapper/311:40:003
25881232122,6sleep30-21swapper/311:32:583
25749202122,6sleep30-21swapper/311:17:573
25716052122,6sleep30-21swapper/311:13:043
25671622122,6sleep30-21swapper/311:08:103
25489662122,6sleep30-21swapper/310:52:583
25452902122,6sleep30-21swapper/310:48:003
25282502122,6sleep30-21swapper/310:32:523
25126822122,6sleep30-21swapper/310:15:023
25117812123,6sleep30-21swapper/310:13:013
25033292122,6sleep30-21swapper/310:07:563
24826542122,5sleep30-21swapper/309:45:013
24803412122,7sleep30-21swapper/309:43:003
24587302122,6sleep30-21swapper/309:22:583
24484972122,6sleep30-21swapper/309:12:553
24433112122,6sleep30-21swapper/309:07:503
24384092122,6sleep30-21swapper/309:02:523
24330312122,6sleep30-21swapper/308:55:023
24236112122,6sleep30-21swapper/308:47:523
24040662122,6sleep30-21swapper/308:27:533
24008852122,6sleep30-21swapper/308:23:013
23852332122,6sleep30-21swapper/308:08:003
23824162122,6sleep30-21swapper/308:03:063
23736362122,6sleep30-21swapper/307:57:483
23684932122,6sleep30-21swapper/307:50:263
23681962122,6sleep30-21swapper/307:49:383
23537362122,6sleep30-21swapper/307:37:383
23476242123,5sleep30-21swapper/307:28:033
23425502122,6sleep30-21swapper/307:23:023
23266782122,5sleep30-21swapper/307:10:023
26427942112,5sleep30-21swapper/312:27:553
26372902112,6sleep30-21swapper/312:20:173
26270412112,5sleep30-21swapper/312:10:023
26223462112,5sleep30-21swapper/312:06:443
26172812112,5sleep30-21swapper/312:00:023
26021662111,5sleep30-21swapper/311:45:023
25972852112,6sleep30-21swapper/311:40:163
25527742112,5sleep30-21swapper/310:55:033
25334732112,5sleep30-21swapper/310:37:533
24986512112,5sleep30-21swapper/310:02:583
24929792112,6sleep30-21swapper/309:55:243
24900112112,6sleep30-21swapper/309:52:593
24727292112,5sleep30-21swapper/309:35:023
24529892112,5sleep30-21swapper/309:15:203
24182312112,5sleep30-21swapper/308:40:013
24085162112,5sleep30-21swapper/308:30:023
23885692112,6sleep30-21swapper/308:10:563
23319632112,5sleep30-21swapper/307:15:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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