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2026-08-09 - 16:05

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 Sun Aug 09, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
80958999219201,16cyclictest0-21swapper/011:48:050
80959399149144,3cyclictest1084824-21/usr/sbin/munin11:48:051
80959699144140,2cyclictest1088956-21sshd11:48:052
8766442710,2sleep0201rcuc/008:17:470
809589994335,6cyclictest950415-21cp09:30:000
809596994236,4cyclictest860818-21kworker/u8:0+flush-8:008:18:052
809593994235,5cyclictest1044489-21latency_hist11:05:001
809589994231,9cyclictest1058589-21ntpq11:17:580
809593993923,12cyclictest275-21systemd-journal09:23:001
809589993935,3cyclictest761494-21kworker/u8:0+flush-8:007:27:490
809589993934,4cyclictest1089607-21kworker/u8:3+flush-8:012:03:010
809589993929,8cyclictest813729-21ntpq07:12:580
809593993827,8cyclictest275-21systemd-journal11:29:051
809589993833,3cyclictest905855-21latency_hist08:45:010
809593993730,5cyclictest275-21systemd-journal11:06:051
809593993724,10cyclictest275-21systemd-journal09:42:591
809589993733,3cyclictest959777-21kworker/u8:0+flush-8:011:27:490
809589993732,4cyclictest761494-21kworker/u8:0+flush-8:007:22:500
809589993732,4cyclictest761494-21kworker/u8:0+flush-8:007:22:500
809589993732,4cyclictest1074274-21kworker/u8:1+flush-8:011:37:500
809589993532,2cyclictest908898-21kworker/u8:1+events_unbound09:00:000
809589993528,5cyclictest900916-21kworker/u8:3+events_unbound09:20:010
809589993522,10cyclictest275-21systemd-journal11:00:000
809596993425,7cyclictest826650-21cat07:25:002
809596993425,7cyclictest826650-21cat07:25:002
809593993426,5cyclictest814431-21latency_hist07:15:001
809589993430,2cyclictest1034623-21turbostat.cron10:55:000
809589993429,3cyclictest1114085-21unin-run12:15:010
80958999340,32cyclictest930626-21munin-run09:10:000
809593993327,4cyclictest866335-21kworker/u8:2+flush-8:008:38:011
809593993326,5cyclictest876175-21latency_hist08:15:011
809593993323,8cyclictest826291-21apt-get07:25:001
809593993323,8cyclictest826291-21apt-get07:25:001
809589993328,4cyclictest885825-21kworker/u8:1+events_unbound08:27:510
80958999331,30cyclictest275-21systemd-journal09:25:000
9461672320,2sleep2371rcuc/209:27:502
809593993229,2cyclictest1064526-21latency_hist11:25:011
809593993228,2cyclictest0-21swapper/112:35:001
809593993227,4cyclictest3663710-21kworker/u8:2+flush-8:007:38:051
809589993227,3cyclictest831449-21kworker/u8:1+flush-8:007:58:050
809593993123,6cyclictest935290-21unixbench_multi09:13:061
809589993127,3cyclictest975600-21kworker/u8:2+events_unbound11:45:000
809589993127,3cyclictest860818-21kworker/u8:0+events_unbound08:22:470
809589993126,4cyclictest1089607-21kworker/u8:3+flush-8:012:27:490
809589993123,6cyclictest995125-21latency_hist10:15:010
809596993022,6cyclictest1000207-21latency_hist10:20:012
809593993026,2cyclictest921880-21irqrtprio09:02:521
809593993026,2cyclictest0-21swapper/110:20:001
809589993026,3cyclictest985230-21turbostat.cron10:05:000
809589993025,3cyclictest975600-21kworker/u8:2+flush-8:011:02:530
809589993024,5cyclictest831449-21kworker/u8:1+events_unbound07:35:010
809596992924,3cyclictest1099830-21aten2_r5power_v12:02:462
809593992925,3cyclictest883766-21kthreadcore08:22:541
809593992924,3cyclictest990848-21tr10:12:481
809593992924,3cyclictest968058-21kthreadcore09:47:571
809593992924,3cyclictest1030658-21irqcore10:52:531
809593992922,5cyclictest860818-21kworker/u8:0+flush-8:008:07:511
809593992921,6cyclictest990157-21latency_hist10:10:011
809593992921,6cyclictest906290-21/usr/sbin/munin08:47:571
809593992920,6cyclictest275-21systemd-journal10:45:001
809589992925,3cyclictest1134067-21kworker/u8:1+flush-8:012:37:540
809589992925,2cyclictest931145-21aten2_r5power_p09:12:480
809589992922,5cyclictest1123936-21latency_hist12:25:010
809589992922,5cyclictest1019782-21latency_hist10:40:010
809589992919,7cyclictest275-21systemd-journal09:45:000
809593992824,2cyclictest1090027-21tr11:52:461
809593992824,2cyclictest1055117-21cpuspeed_turbos11:17:491
809593992823,3cyclictest973013-21kthreadcore09:52:561
809589992823,4cyclictest959777-21kworker/u8:0+events_unbound10:28:000
809589992823,4cyclictest1000084-21kworker/u8:1+flush-8:010:33:070
809589992822,4cyclictest3663710-21kworker/u8:2+events_unbound07:53:030
809589992820,6cyclictest921135-21/usr/sbin/munin09:02:560
809589992820,6cyclictest1064353-21apt-get11:25:010
8092802282,6sleep00-21swapper/007:08:340
809596992723,3cyclictest814228-21unixbench_singl07:13:042
809596992723,2cyclictest841999-21aten2_r5power_v07:42:472
809596992722,3cyclictest976116-21fschecks_time09:57:502
809596992722,3cyclictest1054217-21unixbench_singl11:13:052
809589992723,2cyclictest891719-21cpuspeed_turbos08:32:500
809589992723,2cyclictest891719-21cpuspeed_turbos08:32:490
809589992723,2cyclictest1029688-21systemd-run10:50:000
809589992717,7cyclictest275-21systemd-journal11:30:010
80958999270,25cyclictest799455-21kworker/0:1+events07:44:160
8093482273,5sleep10-21swapper/107:09:281
809596992622,3cyclictest945124-21unixbench_multi09:23:052
809596992622,3cyclictest837202-21fschecks_count07:37:522
809596992619,5cyclictest275-21systemd-journal12:15:002
809593992622,3cyclictest809585-21cyclictest12:12:521
809593992622,2cyclictest1104888-21cpuspeed_turbos12:07:481
809593992622,2cyclictest0-21swapper/112:40:001
809593992619,5cyclictest275-21systemd-journal12:02:051
809593992617,7cyclictest950319-21latency_hist09:30:001
809593992617,7cyclictest890314-21ntpq08:27:581
809593992617,6cyclictest275-21systemd-journal07:55:171
809589992622,2cyclictest0-21swapper/008:55:000
809589992620,4cyclictest1020257-21apt-get10:42:450
9067472250,2sleep3471rcuc/308:47:513
80959699259,4cyclictest0-21swapper/211:23:032
809596992521,3cyclictest995110-21cron10:15:012
809596992521,2cyclictest931352-21fschecks_count09:12:502
809593992521,3cyclictest1054422-21cron11:15:001
809593992521,2cyclictest0-21swapper/111:00:011
809593992519,4cyclictest940248-21unixbench_singl09:18:061
809593992518,5cyclictest0-21swapper/109:37:571
809593992517,6cyclictest916183-21/usr/sbin/munin08:57:581
809593992517,6cyclictest908898-21kworker/u8:1+flush-8:008:52:591
809593992517,6cyclictest1084065-21grep11:43:051
80958999258,16cyclictest799455-21kworker/0:1+events10:20:000
809589992521,2cyclictest1118778-21unixbench_singl12:18:050
809589992520,4cyclictest959777-21kworker/u8:0+flush-8:009:38:060
809589992520,3cyclictest989379-21needreboot10:08:000
809589992516,6cyclictest975339-21latency_hist09:55:000
809596992421,2cyclictest926368-21fschecks_count09:07:512
809596992420,3cyclictest960459-21idleruntime-cro09:40:002
809596992420,3cyclictest821310-21idleruntime-cro07:20:002
809596992420,3cyclictest821310-21idleruntime-cro07:20:002
809596992420,2cyclictest911564-21fschecks_count08:52:502
809596992420,2cyclictest1030185-21aten2_r5power_e10:52:472
809596992420,2cyclictest1019763-21cron10:40:002
809596992419,3cyclictest1009137-21grep10:27:562
80959399242,21cyclictest0-21swapper/107:53:041
809593992420,2cyclictest846371-21cron07:45:001
809593992420,2cyclictest1079446-21systemd-run11:40:001
809593992420,2cyclictest0-21swapper/110:24:051
809593992420,2cyclictest0-21swapper/109:33:001
80958999242,15cyclictest571-21snmpd11:52:450
809589992420,3cyclictest761494-21kworker/u8:0+events_unbound07:15:040
809589992420,3cyclictest761494-21kworker/u8:0+events_unbound07:15:040
809589992420,3cyclictest1004747-21unixbench_multi10:23:060
809589992420,2cyclictest979462-21needreboot09:57:580
809589992419,3cyclictest0-21swapper/008:40:000
80958999241,21cyclictest841336-21sshd07:39:180
809593992320,2cyclictest809585-21cyclictest10:47:501
809593992320,2cyclictest0-21swapper/112:23:051
809593992319,2cyclictest0-21swapper/111:33:001
809593992319,2cyclictest0-21swapper/110:33:021
809593992319,2cyclictest0-21swapper/107:32:471
809593992318,3cyclictest0-21swapper/109:07:481
809593992317,4cyclictest975800-21apt-get09:57:461
809593992317,4cyclictest1005427-21/usr/sbin/munin10:28:001
809593992315,6cyclictest841452-21kworker/u8:3+flush-8:008:03:021
80958999232,14cyclictest571-21snmpd08:02:460
809589992320,2cyclictest841452-21kworker/u8:3+events_unbound08:12:530
809596992219,2cyclictest0-21swapper/209:45:002
809596992218,3cyclictest1043702-21needreboot11:02:572
809596992218,2cyclictest901418-21aten2_r5power_e08:42:482
809596992217,3cyclictest970147-21unixbench_multi09:48:072
809593992219,2cyclictest401-21dbus-daemon07:50:011
809593992218,2cyclictest0-21swapper/112:18:041
809593992218,2cyclictest0-21swapper/110:38:001
809593992218,2cyclictest0-21swapper/108:32:541
809593992218,2cyclictest0-21swapper/108:32:541
809593992213,6cyclictest275-21systemd-journal11:59:051
809589992218,3cyclictest0-21swapper/007:50:000
809589992217,4cyclictest950921-21kworker/u8:1+events_unbound09:47:510
809589992217,4cyclictest860818-21kworker/u8:0+flush-8:008:07:230
809589992217,4cyclictest414-21systemd-logind08:50:010
809589992214,6cyclictest925439-21kworker/u8:2+flush-8:009:33:010
809589992214,5cyclictest1099237-21latency_hist12:00:020
809596992118,2cyclictest1035301-21cpuspeed_turbos10:57:482
809596992117,2cyclictest867086-21fschecks_time08:07:512
809596992117,2cyclictest0-21swapper/212:40:002
809596992117,2cyclictest0-21swapper/212:27:462
809596992117,2cyclictest0-21swapper/207:55:002
809593992117,2cyclictest0-21swapper/112:27:451
809593992117,2cyclictest0-21swapper/110:05:011
809593992117,2cyclictest0-21swapper/108:43:031
809593992117,2cyclictest0-21swapper/108:18:031
809593992110,5cyclictest573-21runrttasks07:17:471
809593992110,5cyclictest573-21runrttasks07:17:471
809589992117,3cyclictest1048716-21ntp_kernel_pll_11:07:570
809589992116,4cyclictest959777-21kworker/u8:0+flush-8:012:07:550
809589992114,5cyclictest1129549-21cpuspeed_turbos12:32:480
11362642210,2sleep3471rcuc/312:37:543
80959699208,10cyclictest1129249-21sshd12:32:052
80959699201,8cyclictest910153-21ntpq08:48:002
809596992016,2cyclictest1049251-21grep11:08:042
809596992016,2cyclictest0-21swapper/210:35:002
809596992016,2cyclictest0-21swapper/208:22:582
809589992015,4cyclictest1050499-21sort11:12:520
8048292206,10sleep20-21swapper/207:06:032
9504012190,2sleep3451irq_work/309:30:003
80959699195,4cyclictest0-21swapper/211:40:002
80959699194,13cyclictest887453-21uname08:27:532
80959699193,14cyclictest898362-21kthreadcore08:37:562
80959699193,14cyclictest862132-21fschecks_time08:02:502
80959699192,2cyclictest8292691kthreadcore07:27:542
80959699192,13cyclictest950318-21apt-get09:30:032
809596991915,3cyclictest1000576-21aten2_r5power_e10:22:472
809596991914,3cyclictest836418-21cron07:35:002
809596991914,3cyclictest1118775-21grep12:18:052
809596991914,3cyclictest0-21swapper/211:17:492
809596991912,5cyclictest1071779-21cut11:32:552
809596991910,2cyclictest0-21swapper/211:52:442
809593991915,2cyclictest0-21swapper/107:27:491
8093332193,9sleep30-21swapper/307:09:173
809596991815,2cyclictest971158-21fschecks_time09:52:502
809596991815,2cyclictest0-21swapper/210:45:002
809596991813,3cyclictest1105446-21irqrtprio12:07:542
80959699179,6cyclictest1026844-21tr10:47:542
80959699178,7cyclictest857482-21sed07:57:532
80959699172,13cyclictest874565-21cut08:12:572
809596991711,2cyclictest0-21swapper/210:05:122
10714622176,8sleep30-21swapper/311:32:553
80959699167,7cyclictest1120278-21sed12:22:532
80959699166,8cyclictest918352-21cut08:57:562
80959699162,4cyclictest0-21swapper/211:27:262
809596991613,2cyclictest0-21swapper/211:58:042
809596991613,2cyclictest0-21swapper/210:03:032
809596991612,3cyclictest1080157-21fschecks_count11:42:502
809596991612,2cyclictest0-21swapper/209:17:572
809596991612,2cyclictest0-21swapper/208:32:562
809596991612,2cyclictest0-21swapper/208:32:562
809596991511,2cyclictest0-21swapper/207:48:072
809596991510,3cyclictest0-21swapper/209:02:472
10893322153,9sleep30-21swapper/311:50:013
8852032142,8sleep30-21swapper/308:22:563
10630712144,6sleep30-21swapper/311:22:563
9901882132,6sleep30-21swapper/310:10:023
8804822132,7sleep30-21swapper/308:18:033
8613202133,5sleep30-21swapper/308:00:013
8364462132,6sleep30-21swapper/307:35:023
11190222132,6sleep30-21swapper/312:20:023
11046292132,7sleep30-21swapper/312:07:463
11000632132,7sleep30-21swapper/312:02:483
10454562132,7sleep30-21swapper/311:07:513
9995702122,6sleep30-21swapper/310:18:043
9873152122,6sleep30-21swapper/310:07:573
9708472122,6sleep30-21swapper/309:52:483
9558282122,6sleep30-21swapper/309:35:593
9504012122,5sleep30-21swapper/309:30:013
9423802122,6sleep30-21swapper/309:22:553
9310652122,6sleep30-21swapper/309:12:493
9256382122,5sleep30-21swapper/309:05:013
9164692122,6sleep30-21swapper/308:57:513
9112462122,6sleep30-21swapper/308:52:463
8951992122,6sleep30-21swapper/308:32:593
8951992122,6sleep30-21swapper/308:32:593
8861182122,5sleep30-21swapper/308:25:013
8738742123,6sleep30-21swapper/308:12:573
8670572122,6sleep30-21swapper/308:07:523
8495712122,6sleep30-21swapper/307:47:583
8419572122,6sleep30-21swapper/307:42:483
8327912122,6sleep30-21swapper/307:32:533
8217642122,6sleep30-21swapper/307:22:463
8217642122,6sleep30-21swapper/307:22:463
8168172122,6sleep30-21swapper/307:17:483
8168172122,6sleep30-21swapper/307:17:483
11292482122,6sleep30-21swapper/312:32:063
11147702122,6sleep30-21swapper/312:17:493
11133412122,6sleep30-21swapper/312:13:003
10841002122,6sleep30-21swapper/311:43:063
10693202122,6sleep30-21swapper/311:28:063
10544532122,6sleep30-21swapper/311:15:023
10402642122,6sleep30-21swapper/311:02:503
10348982122,6sleep30-21swapper/310:55:443
10298922122,6sleep30-21swapper/310:50:063
10206402122,6sleep30-21swapper/310:42:523
10148872122,5sleep30-21swapper/310:35:013
10076402122,6sleep30-21swapper/310:27:553
10046292122,6sleep30-21swapper/310:23:063
9807592112,6sleep30-21swapper/310:02:473
9793872112,5sleep30-21swapper/309:57:583
9657252112,6sleep30-21swapper/309:46:023
9650092112,5sleep30-21swapper/309:43:053
9395622112,6sleep30-21swapper/309:17:573
9209722112,6sleep30-21swapper/309:00:403
9011602112,6sleep30-21swapper/308:40:343
8962502112,6sleep30-21swapper/308:35:523
8565432112,6sleep30-21swapper/307:55:363
8556652112,6sleep30-21swapper/307:53:033
8274172112,5sleep30-21swapper/307:27:523
8096902112,5sleep30-21swapper/307:10:023
11242282112,6sleep30-21swapper/312:26:003
10945032112,5sleep30-21swapper/311:55:023
10901822112,5sleep30-21swapper/311:52:493
10753752112,5sleep30-21swapper/311:37:533
10498822112,5sleep30-21swapper/311:12:453
10251872112,5sleep30-21swapper/310:47:463
10102192112,6sleep30-21swapper/310:30:563
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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