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2026-08-19 - 18:53

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 Wed Aug 19, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
248599621740,3sleep3451irq_work/309:42:483
233163699171152,17cyclictest0-21swapper/011:20:010
233164199165159,4cyclictest2581890-21munin-run11:20:011
2331643997571,2cyclictest2581949-21gpgv11:20:012
26451042670,3sleep0201rcuc/012:22:490
2331643995544,8cyclictest275-21systemd-journal10:30:002
25064582520,2chrt0-21swapper/110:02:491
2331641995140,8cyclictest2336524-21latency_hist07:15:001
2331636995141,7cyclictest2452927-21latency_hist09:10:010
2331636995042,5cyclictest2363467-21latency_hist07:40:010
2331636995039,8cyclictest2443061-21latency_hist09:00:010
2331636994941,6cyclictest2571953-21latency_hist11:10:010
2331636994938,9cyclictest2587030-21dpkg11:23:180
2331641994841,5cyclictest2368909-21kworker/u8:0+flush-8:009:22:551
2331636994642,3cyclictest2656385-21kworker/u8:2+events_unbound12:37:400
2331641994536,7cyclictest2437362-21ntpq08:52:501
2331641994536,6cyclictest2592185-21latency_hist11:30:011
2331641994437,5cyclictest2527424-21latency_hist10:25:001
2331641994231,9cyclictest2616907-21awk11:55:001
2331643994026,12cyclictest2657016-21aten2_r5power_c12:37:392
2331643994026,12cyclictest2612448-21aten2_r5power_e11:52:372
2331643994021,17cyclictest2336523-21apt-get07:15:002
2331641994035,4cyclictest2190372-21kworker/u8:3+flush-8:007:27:421
2331636994030,7cyclictest2651598-21latency_hist12:30:010
2331641993934,4cyclictest2368909-21kworker/u8:0+flush-8:007:47:551
2331641993932,5cyclictest275-21systemd-journal08:32:041
2331641993831,5cyclictest2601357-21ntpq11:37:511
2331641993830,6cyclictest2621082-21ntpq11:57:481
2331641993827,9cyclictest2387976-21ntpq08:02:511
2331641993825,10cyclictest275-21systemd-journal10:20:001
2331643993727,8cyclictest275-21systemd-journal08:25:002
2331643993727,8cyclictest275-21systemd-journal08:25:002
2331641993731,4cyclictest2413692-21kworker/u8:2+flush-8:009:42:561
2331641993731,4cyclictest2326131-21kworker/u8:4+events_unbound07:15:021
2331641993729,5cyclictest275-21systemd-journal09:04:031
2331641993729,5cyclictest2562067-21latency_hist11:00:011
2331636993732,4cyclictest2562326-21kworker/u8:2+flush-8:011:40:010
2331643993621,13cyclictest2507375-21unixbench_multi10:02:582
2331643993621,13cyclictest2483486-21fschecks_time09:42:422
2331641993629,5cyclictest2408874-21apt-get08:27:371
2331636993630,4cyclictest2368909-21kworker/u8:0+flush-8:008:12:420
2331643993521,13cyclictest0-21swapper/207:40:002
2331643993515,2cyclictest0-21swapper/208:52:392
2331641993529,4cyclictest2428231-21latency_hist08:45:011
2331641993529,4cyclictest2383528-21grep07:57:571
2331641993525,8cyclictest2402760-21ntpq08:17:491
2331636993530,4cyclictest2458205-21kworker/u8:1+flush-8:009:57:400
2331643993427,5cyclictest2502445-21apt-get10:00:002
2331641993427,5cyclictest2540476-21kworker/u8:2+flush-8:010:42:521
2331641993427,5cyclictest2498208-21diskstats09:57:391
2331641993427,5cyclictest2458205-21kworker/u8:1+flush-8:009:52:471
2331636993429,4cyclictest2368909-21kworker/u8:0+flush-8:008:42:420
2331636993427,5cyclictest2551968-21grep10:47:570
2331636993425,7cyclictest2412728-21ntpq08:27:530
2331636993423,8cyclictest2538016-21diskstats10:37:410
2331643993314,3cyclictest0-21swapper/210:32:562
2331643993314,3cyclictest0-21swapper/210:32:562
2331641993329,3cyclictest2537337-21systemd-run10:35:001
2331641993329,3cyclictest2537337-21systemd-run10:35:001
2331641993328,3cyclictest2557123-21kworker/u8:0+flush-8:012:00:061
2331641993325,6cyclictest2567493-21apt-get11:07:381
23314202334,8sleep10-21swapper/107:09:541
233164399327,9cyclictest2349075-21apt-get07:27:382
233164399323,7cyclictest2522916-21apt-get10:22:402
2331643993218,12cyclictest2443749-21cpuspeed_turbos09:02:402
2331643993214,2cyclictest0-21swapper/207:15:052
233164399320,9cyclictest2480065-21grep09:37:472
2331641993226,5cyclictest2358487-21kworker/u8:2+events_unbound08:22:411
2331641993226,5cyclictest2358487-21kworker/u8:2+events_unbound08:22:411
2331641993226,4cyclictest2586991-21apt-get11:23:201
2331641993226,4cyclictest2398359-21unixbench_singl08:12:581
2331641993225,5cyclictest2453384-21apt-get09:12:381
2331641993223,7cyclictest2641028-21ntpq12:17:511
2331636993228,3cyclictest2477722-21cron09:35:000
2331636993228,3cyclictest2458205-21kworker/u8:1+flush-8:009:17:420
2331636993227,4cyclictest2458205-21kworker/u8:1+flush-8:010:59:350
2331636993226,4cyclictest275-21systemd-journal12:31:200
2331636993225,6cyclictest2404022-21aten2_r5power_e08:22:400
2331636993225,6cyclictest2404022-21aten2_r5power_e08:22:400
2331636993224,6cyclictest2640936-21needreboot12:17:490
2331636993224,6cyclictest2419057-21grep08:37:410
2331636993221,9cyclictest2632470-21diskstats12:12:410
233164399313,7cyclictest2587654-21apt-get11:27:372
2331643993116,13cyclictest0-21swapper/211:32:502
2331643993113,3cyclictest0-21swapper/209:15:002
2331641993128,2cyclictest2596904-21unixbench_multi11:32:581
2331641993125,4cyclictest2632595-21kworker/u8:4-ext4-rsv-conversion12:25:001
2331641993125,4cyclictest2368909-21kworker/u8:0+flush-8:009:32:551
2331641993118,5cyclictest275-21systemd-journal10:38:041
2331636993126,4cyclictest2368909-21kworker/u8:0+flush-8:007:57:410
2331636993125,5cyclictest2463438-21aten2_r5power_v09:22:400
2331636993124,6cyclictest2418121-21unixbench_singl08:32:590
2331636993123,6cyclictest2602611-21aten2_r5power_p11:42:400
2331636993123,6cyclictest2336508-21cron07:15:000
233163699310,29cyclictest2378597-21true07:55:000
26156582300,4sleep30-21swapper/311:52:463
2331643993017,11cyclictest0-21swapper/211:50:002
2331643993017,11cyclictest0-21swapper/208:20:002
2331643993014,2cyclictest0-21swapper/209:27:472
2331641993026,3cyclictest2413692-21kworker/u8:2+flush-8:009:37:551
2331641993025,4cyclictest2413692-21kworker/u8:2+flush-8:009:48:011
2331641993025,3cyclictest2603248-21irqrtprio11:42:461
2331641993025,3cyclictest2458205-21kworker/u8:1+events_unbound11:12:471
2331641993024,5cyclictest2557123-21kworker/u8:0+flush-8:012:27:511
2331641993024,4cyclictest2540476-21kworker/u8:2+events_unbound10:52:481
2331641993024,4cyclictest2368909-21kworker/u8:0+events_unbound08:47:451
2331641993023,5cyclictest2458205-21kworker/u8:1+flush-8:010:12:421
2331641993021,7cyclictest2389116-21/usr/sbin/munin08:07:501
2331641993020,8cyclictest2551462-21ntpq10:47:501
2331636993027,2cyclictest2516707-21needreboot10:12:490
2331636993024,4cyclictest2522431-21cron10:20:000
2331636993023,6cyclictest2572488-21aten2_r5power_p11:12:390
2331636993023,6cyclictest2345020-21kthreadcore07:22:450
2331636993023,5cyclictest2190372-21kworker/u8:3+events_unbound07:17:500
2331636993022,6cyclictest2478153-21/usr/sbin/munin09:37:560
2331636993019,8cyclictest2358474-21latency_hist07:35:010
2331643992918,9cyclictest0-21swapper/207:55:002
2331643992913,2cyclictest0-21swapper/208:32:422
2331643992912,2cyclictest0-21swapper/209:07:492
2331636992926,1cyclictest2403498-21latency_hist08:20:000
2331636992923,4cyclictest2458205-21kworker/u8:1+flush-8:009:50:420
2331636992922,6cyclictest2547016-21unixbench_multi10:42:570
2331636992921,6cyclictest2483110-21/usr/sbin/munin09:42:560
233164399283,7cyclictest2517958-21apt-get10:17:392
2331643992816,10cyclictest0-21swapper/208:27:472
2331641992824,3cyclictest2368909-21kworker/u8:0+events_unbound09:00:001
2331641992824,3cyclictest2294256-21kworker/u8:1+events_unbound07:42:411
2331641992822,5cyclictest2458205-21kworker/u8:1+events_unbound09:17:541
2331641992822,4cyclictest2562326-21kworker/u8:2+flush-8:011:02:571
2331641992822,4cyclictest2294256-21kworker/u8:1+flush-8:007:22:501
2331636992823,4cyclictest2562650-21aten2_r5power_v11:02:410
2331636992822,4cyclictest2512348-21unixbench_singl10:07:580
23313862284,8sleep20-21swapper/207:09:272
2331643992723,2cyclictest2432953-21unixbench_singl08:47:572
2331643992720,5cyclictest2428220-21cron08:45:002
2331643992713,2cyclictest2537995-21cpuspeed_turbos10:37:402
2331643992710,3cyclictest0-21swapper/207:45:012
2331641992723,2cyclictest2661509-21idleruntime-cro12:40:001
233164199271,6cyclictest2377834-21ntpq07:52:501
2331636992722,4cyclictest2527180-21unixbench_multi10:22:590
2331636992722,4cyclictest2368909-21kworker/u8:0+flush-8:010:33:350
2331636992722,4cyclictest2368909-21kworker/u8:0+flush-8:010:33:350
2331636992722,4cyclictest2190372-21kworker/u8:3+flush-8:008:07:430
2331636992721,5cyclictest2611748-21unixbench_singl11:47:590
2331636992721,5cyclictest2443589-21aten2_r5power_e09:02:390
2331636992721,4cyclictest2622084-21kworker/u8:3+events_unbound12:05:010
2331636992720,5cyclictest2368909-21kworker/u8:0+flush-8:009:27:540
2331636992717,7cyclictest2631771-21latency_hist12:10:010
2331643992622,3cyclictest2647250-21aten2_r5power_v12:27:402
2331643992622,3cyclictest2493247-21cpuspeed_turbos09:52:422
2331641992621,4cyclictest2358487-21kworker/u8:2+events_unbound07:37:401
2331641992620,4cyclictest2368909-21kworker/u8:0+events_unbound09:07:451
2331641992620,4cyclictest2190372-21kworker/u8:3+events_unbound07:32:531
2331636992621,4cyclictest2616890-21cron11:55:000
2331636992621,4cyclictest2368909-21kworker/u8:0+flush-8:008:47:570
2331636992620,4cyclictest2373700-21latency_hist07:50:000
2331636992619,6cyclictest2384290-21aten2_r5power_p08:02:390
2331641992521,2cyclictest0-21swapper/111:47:401
233164199251,16cyclictest2652236-21cpuspeed12:32:401
233163699259,3cyclictest25034152grep10:02:430
2331636992522,2cyclictest851-21mta-sts-daemon11:32:410
2331643992421,2cyclictest2513334-21fschecks_time10:12:422
2331643992421,2cyclictest2384263-21aten2_r5power_e08:02:392
2331643992415,7cyclictest275-21systemd-journal09:35:002
2331641992420,2cyclictest0-21swapper/112:12:491
2331641992418,4cyclictest2423027-21unixbench_multi08:37:571
2331636992417,5cyclictest2294256-21kworker/u8:1+flush-8:007:42:530
2331636992413,9cyclictest0-21swapper/011:27:380
2331643992320,2cyclictest2358257-21unixbench_singl07:32:572
2331643992315,6cyclictest275-21systemd-journal10:42:042
2331641992316,5cyclictest2368909-21kworker/u8:0+flush-8:010:07:511
2331636992319,3cyclictest2349605-21grep07:27:440
2331636992318,4cyclictest2368909-21kworker/u8:0+flush-8:010:27:360
233164399228,6cyclictest2597370-21sshd11:35:042
2331643992218,2cyclictest2572461-21aten2_r5power_e11:12:392
2331641992218,2cyclictest0-21swapper/109:27:411
2331641992217,4cyclictest2368909-21kworker/u8:0+events_unbound10:27:541
2331636992216,4cyclictest2413692-21kworker/u8:2+flush-8:009:47:470
2331636992211,9cyclictest0-21swapper/010:52:530
2331643992117,3cyclictest2621838-21munin-plugin-st12:00:002
2331643992116,3cyclictest2562622-21aten2_r5power_p11:02:412
2331641992117,2cyclictest0-21swapper/112:07:411
2331636992118,2cyclictest0-21swapper/011:57:550
233164399204,2cyclictest23837872grep08:00:002
2331643992017,2cyclictest2552758-21aten2_r5power_v10:52:412
2331643992017,2cyclictest2508199-21aten2_r5power_v10:07:402
2331643992016,3cyclictest2562062-21turbostat.cron11:00:002
2331643992016,2cyclictest2656274-21unixbench_multi12:32:572
2331643992015,4cyclictest2462592-21unixbench_multi09:17:582
2331636992017,2cyclictest0-21swapper/008:52:550
24399642190,3sleep3575-21kworker/3:2+mm_percpu_wq08:57:463
2331643991915,3cyclictest2637449-21cpuspeed_turbos12:17:402
2331643991911,6cyclictest2423266-21cron08:40:002
2331636991915,2cyclictest2453683-21fschecks_count09:12:420
23310432193,8sleep30-21swapper/307:05:023
233164399182,12cyclictest2606337-21ntpq11:42:532
2331643991814,2cyclictest2344323-21cpuspeed_turbos07:22:392
2331643991814,2cyclictest0-21swapper/208:57:402
2331643991814,2cyclictest0-21swapper/208:15:002
23313122183,10sleep00-21swapper/007:08:290
233164399179,7cyclictest2369390-21fschecks_count07:47:412
233164399178,7cyclictest2586127-21seq11:22:492
233164399178,7cyclictest2568169-21sed11:07:452
2331643991713,3cyclictest2393831-21wc08:10:012
2331643991713,2cyclictest0-21swapper/210:47:452
2331643991712,3cyclictest2642546-21cut12:22:432
2331643991712,3cyclictest0-21swapper/212:12:482
233164399167,7cyclictest2488364-21cut09:47:412
233164399162,13cyclictest0-21swapper/212:00:422
24382332150,2sleep3471rcuc/308:55:013
233164399157,6cyclictest1-21systemd12:10:002
233164399152,12cyclictest0-21swapper/209:20:452
25979032133,6sleep30-21swapper/311:37:423
25621982132,6sleep30-21swapper/311:00:023
25017262132,7sleep30-21swapper/309:57:503
26558112122,6sleep30-21swapper/312:32:523
26508022122,6sleep30-21swapper/312:27:503
26416582122,6sleep30-21swapper/312:19:113
26324692122,6sleep30-21swapper/312:12:413
26312992122,6sleep30-21swapper/312:08:003
26263622122,6sleep30-21swapper/312:02:583
26172012122,6sleep30-21swapper/311:56:043
26025312122,6sleep30-21swapper/311:42:403
25719602122,5sleep30-21swapper/311:10:013
25563342122,6sleep30-21swapper/310:52:523
25479632122,6sleep30-21swapper/310:47:423
25278762122,6sleep30-21swapper/310:27:403
25224872122,5sleep30-21swapper/310:20:013
25178802122,6sleep30-21swapper/310:17:003
25085872122,6sleep30-21swapper/310:07:453
25034192122,6sleep30-21swapper/310:02:443
24939162122,6sleep30-21swapper/309:52:493
24820482122,6sleep30-21swapper/309:37:563
24738782122,6sleep30-21swapper/309:32:473
24673592122,6sleep30-21swapper/309:22:593
24545502122,6sleep30-21swapper/309:12:483
24496092122,6sleep30-21swapper/309:07:463
24232642122,5sleep30-21swapper/308:40:013
24039662122,6sleep30-21swapper/308:22:403
24039662122,6sleep30-21swapper/308:22:403
24028782122,6sleep30-21swapper/308:17:543
23945312122,6sleep30-21swapper/308:12:443
23850872122,7sleep30-21swapper/308:02:453
23820652122,6sleep30-21swapper/307:57:483
23736552122,5sleep30-21swapper/307:50:013
23591732122,6sleep30-21swapper/307:37:413
23540042122,6sleep30-21swapper/307:32:403
23486392122,5sleep30-21swapper/307:25:013
23440672122,6sleep30-21swapper/307:22:363
23317662122,6sleep30-21swapper/307:10:283
26567602112,6sleep30-21swapper/312:35:053
26420002112,6sleep30-21swapper/312:20:203
26079212112,5sleep30-21swapper/311:47:453
25924172112,6sleep30-21swapper/311:30:083
25874792112,6sleep30-21swapper/311:25:423
25825212112,5sleep30-21swapper/311:22:373
25772622112,6sleep30-21swapper/311:16:593
25672822112,5sleep30-21swapper/311:05:163
25578992112,5sleep30-21swapper/310:57:413
25425442112,6sleep30-21swapper/310:40:363
25375452112,6sleep30-21swapper/310:35:063
25326052112,6sleep30-21swapper/310:30:043
25326052112,6sleep30-21swapper/310:30:043
25128782112,6sleep30-21swapper/310:11:063
24878632112,5sleep30-21swapper/309:45:023
24680632112,6sleep30-21swapper/309:25:083
24583182112,5sleep30-21swapper/309:17:373
24433462112,6sleep30-21swapper/309:00:363
24286882112,6sleep30-21swapper/308:47:403
24235992112,6sleep30-21swapper/308:41:013
24137042112,6sleep30-21swapper/308:31:143
24088482112,5sleep30-21swapper/308:27:373
23889242112,6sleep30-21swapper/308:05:103
23688962112,6sleep30-21swapper/307:45:043
23637042112,5sleep30-21swapper/307:40:023
23384092112,5sleep30-21swapper/307:15:063
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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