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2026-08-12 - 06:36

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 12, 2026 00:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
231335723580,2sleep3575-21kworker/3:2+events19:47:523
23670892940,3chrt575-21kworker/3:2-events20:42:533
2274766996153,6cyclictest275-21systemd-journal22:52:450
2274770995950,5cyclictest275-21systemd-journal23:37:451
24755972580,4sleep10-21swapper/122:30:001
2274766995550,4cyclictest2274108-21kworker/u8:2+events_unbound22:15:000
2274766995545,7cyclictest2455656-21latency_hist22:10:010
2274766995544,8cyclictest2396011-21latency_hist21:10:000
25738502540,5chrt0-21swapper/000:07:540
2274766995248,2cyclictest2274108-21kworker/u8:2+events_unbound22:17:540
2274766995247,3cyclictest2525248-21kworker/u8:1+events_unbound00:03:040
2274766995246,4cyclictest2445086-21kworker/u8:1+flush-8:022:03:030
2274766995145,4cyclictest2525248-21kworker/u8:1+flush-8:023:25:000
2274766995142,7cyclictest2534553-21ntpq23:27:540
2274770995031,7cyclictest2505421-21apt-get23:00:011
2274766995040,7cyclictest2386099-21latency_hist21:00:000
2274766994944,4cyclictest2274108-21kworker/u8:2+flush-8:020:28:020
2274770994839,6cyclictest2291432-21latency_hist19:25:011
2274766994844,3cyclictest1467226-21kworker/u8:4+events_unbound19:43:010
2274766994842,4cyclictest2274108-21kworker/u8:2+events_unbound21:47:500
2274766994836,9cyclictest275-21systemd-journal22:25:000
2274770994738,7cyclictest275-21systemd-journal20:08:201
2274766994741,4cyclictest2575501-21kworker/u8:3+flush-8:000:12:500
2274766994739,6cyclictest2316447-21latency_hist19:50:000
2274770994639,5cyclictest2560056-21apt-get23:55:011
2274770994638,6cyclictest275-21systemd-journal23:50:001
2274770994634,9cyclictest275-21systemd-journal19:11:201
2274766994640,4cyclictest2274108-21kworker/u8:2+flush-8:023:07:560
2274766994639,5cyclictest2445086-21kworker/u8:1+flush-8:022:48:000
2274766994638,6cyclictest2274108-21kworker/u8:2+flush-8:021:42:580
2274766994636,7cyclictest2296369-21latency_hist19:30:010
23655312450,1sleep12365530-21selinux_avcstat20:38:011
2274770994538,5cyclictest2440549-21latency_hist21:55:011
2274766994539,4cyclictest2301366-21kworker/u8:1+events_unbound20:47:440
2274766994538,4cyclictest2525248-21kworker/u8:1+flush-8:023:52:530
2274766994537,6cyclictest1467226-21kworker/u8:4+flush-8:021:52:550
2274766994531,4cyclictest1467226-21kworker/u8:4+events_unbound22:38:030
2274766994531,4cyclictest1467226-21kworker/u8:4+events_unbound22:38:030
2274770994438,4cyclictest2416249-21/usr/sbin/munin21:33:031
2274766994439,4cyclictest2274108-21kworker/u8:2+flush-8:021:28:040
2274766994437,5cyclictest1467226-21kworker/u8:4+events_unbound19:15:020
2274766994435,7cyclictest2274108-21kworker/u8:2+flush-8:021:22:580
2274766994338,4cyclictest2274108-21kworker/u8:2+flush-8:019:38:010
2274766994334,7cyclictest2506374-21diskstats23:02:460
2274770994236,4cyclictest275-21systemd-journal23:02:451
2274766994238,3cyclictest2301366-21kworker/u8:1+events_unbound20:43:060
2274772994131,8cyclictest275-21systemd-journal23:45:002
2274770994134,5cyclictest2585142-21latency_hist00:20:011
2274766994135,4cyclictest2565321-21kworker/u8:0+events_unbound00:22:470
2274766994134,5cyclictest1467226-21kworker/u8:4+events_unbound20:02:590
2274770994033,5cyclictest2511056-21apt-get23:07:411
2274770994033,5cyclictest2311970-21apt-get19:47:431
2274766994035,4cyclictest2445086-21kworker/u8:1+events_unbound22:27:490
2274766994035,3cyclictest2565321-21kworker/u8:0+flush-8:000:27:530
2274766994034,4cyclictest2399212-21kworker/u8:1+events_unbound21:20:010
2274766994033,5cyclictest1467226-21kworker/u8:4+events_unbound20:00:010
2274772993929,8cyclictest2475366-21apt-get22:30:002
2274770993932,5cyclictest2301803-21apt-get19:37:431
2274770993930,7cyclictest2405218-21ntpq21:17:581
2274766993933,4cyclictest1467226-21kworker/u8:4+events_unbound21:02:570
22700922394,10sleep10-21swapper/119:07:311
2274772993833,4cyclictest2274108-21kworker/u8:2+flush-8:020:43:032
2274770993830,6cyclictest275-21systemd-journal00:26:341
2274770993830,6cyclictest2336898-21apt-get20:12:511
2274770993829,6cyclictest275-21systemd-journal22:31:451
2274766993833,4cyclictest1467226-21kworker/u8:4+events_unbound20:07:560
2274766993830,6cyclictest275-21systemd-journal00:00:000
2274770993730,5cyclictest2525873-21apt-get23:22:431
2274766993732,3cyclictest2274108-21kworker/u8:2+events_unbound21:37:530
2274766993731,4cyclictest2274108-21kworker/u8:2+events_unbound20:22:540
2274766993730,5cyclictest1467226-21kworker/u8:4+flush-8:019:22:570
23808282360,3chrt575-21kworker/3:2+events20:53:043
2274772993630,4cyclictest1467226-21kworker/u8:4+events_unbound23:20:012
2274770993630,4cyclictest2415093-21ntpq21:27:591
2274766993631,3cyclictest2301366-21kworker/u8:1+flush-8:020:17:540
2274766993617,11cyclictest2274108-21kworker/u8:2+events_unbound23:17:510
2274770993526,6cyclictest275-21systemd-journal22:23:451
2274766993531,3cyclictest2490402-21idleruntime-cro22:45:000
2274766993529,4cyclictest1467226-21kworker/u8:4+events_unbound22:57:480
2274766993528,5cyclictest1467226-21kworker/u8:4+flush-8:023:37:560
2274772993428,4cyclictest2450465-21awk22:05:002
2274772993426,6cyclictest2291433-21turbostat.cron19:25:002
2274772993425,6cyclictest2400974-21cat21:15:002
2274772993424,7cyclictest2505796-21cat23:00:012
2274766993427,5cyclictest2274108-21kworker/u8:2+flush-8:021:32:570
2274766993426,6cyclictest2321382-21latency_hist19:55:000
2274772993327,4cyclictest2376103-21gpgv20:50:012
227477099331,29cyclictest1-21systemd23:30:001
2274766993329,3cyclictest2274108-21kworker/u8:2+events_unbound20:10:520
2274766993328,3cyclictest2274108-21kworker/u8:2+flush-8:019:12:590
2274766993327,4cyclictest2274108-21kworker/u8:2+events_unbound21:12:530
2274770993224,6cyclictest275-21systemd-journal00:40:001
2274766993227,4cyclictest1467226-21kworker/u8:4+flush-8:023:12:490
2274766993226,4cyclictest2525248-21kworker/u8:1+events_unbound23:47:480
2274766993226,4cyclictest2274108-21kworker/u8:2+flush-8:021:57:500
2274770993127,2cyclictest2383776-21kthreadcore20:57:521
2274770993123,6cyclictest2426267-21aten2_r5power_p21:42:451
2274766993127,2cyclictest2525248-21kworker/u8:1+events_unbound00:17:510
2274766993126,4cyclictest2525248-21kworker/u8:1+flush-8:000:37:500
2274766993125,5cyclictest1467226-21kworker/u8:4+events_unbound20:53:030
2274766993124,5cyclictest2545442-21kworker/u8:2+flush-8:023:42:470
2274766993123,6cyclictest2476281-21cpuspeed_turbos22:32:430
2274770993026,2cyclictest2311282-21awk19:45:001
2274770993025,3cyclictest2367153-21irqcore20:42:531
2274770993023,5cyclictest2485923-21apt-get22:42:431
2274770993021,7cyclictest275-21systemd-journal00:15:011
2274766993025,4cyclictest1467226-21kworker/u8:4+flush-8:019:33:010
2274766993022,6cyclictest2274580-21latency_hist19:10:010
2274766993019,9cyclictest2365325-21ntpq20:37:560
22700062304,9sleep20-21swapper/219:06:222
2274772992924,4cyclictest2510376-21kworker/u8:0+flush-8:023:05:012
2274772992923,4cyclictest2321130-21unixbench_multi19:53:022
2274770992921,6cyclictest2291887-21apt-get19:27:441
2274770992921,6cyclictest1467226-21kworker/u8:4+flush-8:021:03:011
2274766992923,4cyclictest1467226-21kworker/u8:4+events_unbound23:32:580
2274772992819,7cyclictest0-21swapper/221:00:002
227477299280,13cyclictest2592957-21kthreadcore00:27:532
2274770992822,4cyclictest2520931-21apt-get23:17:431
2274770992822,4cyclictest2346781-21apt-get20:22:441
2274770992820,6cyclictest2585589-21/usr/sbin/munin00:22:561
2274766992824,3cyclictest2584471-21kworker/u8:2+flush-8:000:32:470
2274766992824,3cyclictest2274108-21kworker/u8:2+events_unbound20:30:020
2274772992723,2cyclictest2580903-21cpuspeed_turbos00:17:452
2274770992723,2cyclictest0-21swapper/119:20:001
2274770992722,3cyclictest2560051-21idleruntime-cro23:55:001
2274770992722,3cyclictest2321371-21cron19:55:001
2274770992722,3cyclictest0-21swapper/121:15:001
2274770992719,6cyclictest2356626-21/usr/sbin/munin20:33:021
2274772992623,2cyclictest2366108-21sendmail20:40:002
227477299261,23cyclictest1-21systemd22:35:002
2274770992622,2cyclictest2377277-21irqcore20:52:521
2274770992621,3cyclictest573-21runrttasks23:13:031
2274770992620,4cyclictest2410619-21unixbench_multi21:23:031
2274770992617,7cyclictest2480966-21/usr/sbin/munin22:37:571
2274770992617,7cyclictest2480966-21/usr/sbin/munin22:37:571
2274772992522,2cyclictest2491077-21cpuspeed_turbos22:47:452
2274772992521,3cyclictest1467226-21kworker/u8:4+flush-8:022:12:582
2274772992521,2cyclictest2461131-21aten2_r5power_v22:17:442
2274770992521,3cyclictest2433297-21kthreadcore21:47:531
2274770992520,3cyclictest0-21swapper/122:20:011
2274770992519,4cyclictest2297048-21cpuspeed_turbos19:32:461
2274770992518,5cyclictest2535770-21apt-get23:32:441
2274772992421,2cyclictest2415563-21unixbench_multi21:28:052
2274772992418,4cyclictest2540249-21cron23:35:002
2274770992420,3cyclictest2572901-21kthreadcore00:07:531
2274770992420,2cyclictest2495308-21sh22:50:001
2274770992420,2cyclictest0-21swapper/100:35:001
2274770992419,4cyclictest1467226-21kworker/u8:4+flush-8:023:41:161
2274770992418,4cyclictest2456194-21tr22:12:451
2274770992418,4cyclictest2450585-21apt-config22:05:001
2274770992412,9cyclictest275-21systemd-journal20:00:001
2274772992320,2cyclictest2530137-21unixbench_singl23:23:032
2274772992319,2cyclictest2571033-21fschecks_time00:07:492
2274772992319,2cyclictest2406471-21aten2_r5power_p21:22:452
2274770992318,3cyclictest2496729-21irqrtprio22:52:501
2274770992317,4cyclictest275-21systemd-journal21:40:001
2274770992315,6cyclictest2341849-21apt-get20:17:441
2274770992315,6cyclictest2274108-21kworker/u8:2+flush-8:021:07:491
2274770992313,8cyclictest2330872-21ntpq20:03:011
2274772992219,2cyclictest2401543-21aten2_r5power_v21:17:462
2274772992218,3cyclictest2579995-21sed00:13:052
2274772992218,2cyclictest0-21swapper/219:45:012
2274772992217,4cyclictest1467226-21kworker/u8:4+flush-8:023:12:572
2274772992214,5cyclictest275-21systemd-journal19:15:002
2274772992213,7cyclictest2441084-21wget21:57:432
2274770992218,2cyclictest0-21swapper/120:50:001
2274770992217,3cyclictest0-21swapper/122:00:011
2274772992118,2cyclictest2455446-21unixbench_singl22:08:042
2274772992118,2cyclictest2426532-21fschecks_time21:42:482
2274772992117,3cyclictest2531125-21fschecks_time23:27:462
2274772992117,3cyclictest2306307-21cron19:40:002
2274772992117,2cyclictest2565979-21cpuspeed_turbos00:02:482
227477099219,4cyclictest0-21swapper/120:25:191
227477299202,13cyclictest2295699-21ntpq19:27:592
2274772992017,2cyclictest2351964-21cpuspeed_turbos20:27:462
2274772992015,3cyclictest2435066-21find21:48:012
2274772992014,4cyclictest0-21swapper/200:00:002
2274772992012,6cyclictest2425590-21sshd21:38:402
2274770992016,3cyclictest2274108-21kworker/u8:2+flush-8:022:07:541
2274770992012,6cyclictest2569537-21ntpq00:02:581
227477299192,2cyclictest0-21swapper/219:47:442
2274772991915,2cyclictest0-21swapper/200:40:002
2274772991914,2cyclictest0-21swapper/220:07:542
2274772991912,5cyclictest0-21swapper/200:32:552
24135172180,2sleep3471rcuc/321:27:553
2274772991814,3cyclictest0-21swapper/223:10:002
2274772991814,2cyclictest2552550-21kthreadcore23:47:532
2274772991813,4cyclictest1467226-21kworker/u8:4+events_unbound19:32:562
227477299181,12cyclictest2386574-21apt-get21:02:452
227477299181,12cyclictest2376686-21apt-get20:52:462
2274772991810,6cyclictest2391547-21seq21:07:462
227477299180,3cyclictest23284831kthreadcore20:02:532
22700572183,8sleep30-21swapper/319:07:043
227477299179,7cyclictest2416588-21fschecks_time21:32:482
227477299178,7cyclictest2560356-21cat23:55:002
227477299178,7cyclictest2488523-21tr22:42:532
227477299178,7cyclictest2484022-21tr22:37:552
227477299178,7cyclictest2484022-21tr22:37:552
227477299172,14cyclictest0-21swapper/222:23:022
2274772991715,1cyclictest0-21swapper/220:18:032
2274772991714,2cyclictest2286502-21cron19:20:002
2274772991713,2cyclictest2326324-21sendmail20:00:012
2274772991712,3cyclictest0-21swapper/220:32:542
2274772991712,3cyclictest0-21swapper/220:13:102
2274772991613,2cyclictest0-21swapper/200:22:512
2274772991612,2cyclictest2499042-21taskset22:52:522
2274772991611,3cyclictest0-21swapper/221:52:492
2274772991611,3cyclictest0-21swapper/220:22:532
2274772991511,2cyclictest0-21swapper/223:37:502
24998212145,6sleep30-21swapper/322:52:583
23055872142,8sleep30-21swapper/319:37:573
25592512132,7sleep30-21swapper/323:52:573
25310142132,7sleep30-21swapper/323:27:453
25204882132,6sleep30-21swapper/323:15:013
25159672132,7sleep30-21swapper/323:12:453
25061552132,7sleep30-21swapper/323:02:453
24647492132,7sleep30-21swapper/322:17:553
24231612133,7sleep30-21swapper/321:37:553
23902502132,7sleep30-21swapper/321:02:563
23813492132,6sleep30-21swapper/320:55:023
23413752131,6sleep30-21swapper/320:15:013
25992522123,6sleep30-21swapper/300:32:583
25908152122,6sleep30-21swapper/300:27:483
25851742122,6sleep30-21swapper/300:20:023
25746272122,6sleep30-21swapper/300:08:023
25662562122,6sleep30-21swapper/300:02:523
25643172123,5sleep30-21swapper/323:57:553
25544272122,6sleep30-21swapper/323:48:003
25452302122,5sleep30-21swapper/323:40:013
25410772122,6sleep30-21swapper/323:37:483
25011822122,6sleep30-21swapper/322:57:483
24519652122,6sleep30-21swapper/322:07:523
24351272122,6sleep30-21swapper/321:48:023
24204782122,6sleep30-21swapper/321:33:053
24013462122,6sleep30-21swapper/321:17:003
23915352122,6sleep30-21swapper/321:07:463
23654302122,6sleep30-21swapper/320:38:003
23472502122,6sleep30-21swapper/320:22:513
23460972122,6sleep30-21swapper/320:18:063
23315282122,6sleep30-21swapper/320:05:023
23168752122,6sleep30-21swapper/319:52:423
23112652120,8sleep30-21swapper/319:45:003
22977402122,6sleep30-21swapper/319:32:523
22914552122,5sleep30-21swapper/319:25:013
22753432122,6sleep30-21swapper/319:12:473
26002062111,5sleep30-21swapper/300:35:023
25805282112,6sleep30-21swapper/300:16:083
25760732112,6sleep30-21swapper/300:12:513
25355382112,5sleep30-21swapper/323:30:023
25267642112,6sleep30-21swapper/323:22:523
25114292112,5sleep30-21swapper/323:07:473
24940712112,5sleep30-21swapper/322:47:533
24858952112,5sleep30-21swapper/322:42:433
24805512112,5sleep30-21swapper/322:35:013
24805512112,5sleep30-21swapper/322:35:013
24760202112,6sleep30-21swapper/322:32:363
24707782112,6sleep30-21swapper/322:26:223
24668732111,6sleep30-21swapper/322:22:533
24556682112,5sleep30-21swapper/322:10:013
24457272112,5sleep30-21swapper/322:00:023
24409742112,5sleep30-21swapper/321:57:413
24363802112,6sleep30-21swapper/321:52:493
24259612112,6sleep30-21swapper/321:40:123
24059042111,5sleep30-21swapper/321:20:013
23964772112,5sleep30-21swapper/321:12:473
23719132112,5sleep30-21swapper/320:47:473
23563062112,5sleep30-21swapper/320:30:023
23521052112,5sleep30-21swapper/320:27:493
23278882112,5sleep30-21swapper/320:02:533
23222892112,5sleep30-21swapper/319:57:483
22867582112,6sleep30-21swapper/319:20:123
22799142111,5sleep30-21swapper/319:15:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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