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2025-12-14 - 21:08

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
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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 highest latencies:
System rack5slot4s.osadl.org (updated Sun Dec 14, 2025 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3543273997852,10cyclictest3826860-21apt-get11:55:000
36648132630,2sleep3575-21kworker/3:2-events09:14:033
36648132630,2sleep3575-21kworker/3:2-events09:14:033
37069302560,5chrt0-21swapper/009:54:080
3543278995444,7cyclictest3634447-21kworker/u8:2+flush-8:008:44:171
3543278994942,5cyclictest3777906-21kworker/u8:0+flush-8:011:14:181
3543278994940,6cyclictest3673782-21latency_hist09:20:001
3543278994741,4cyclictest3634447-21kworker/u8:2+events_unbound08:50:011
3543278994739,6cyclictest3717991-21kworker/u8:2+flush-8:011:19:191
3543273994636,7cyclictest3579993-21latency_hist07:45:010
3543278994539,4cyclictest3543093-21kworker/u8:2+events_unbound07:34:181
3543278994337,4cyclictest3560240-21kworker/u8:1+flush-8:007:49:151
3543278994332,9cyclictest3811849-21latency_hist11:40:021
3543278994236,4cyclictest3580256-21kworker/u8:0+flush-8:008:09:181
3543278994234,5cyclictest3678734-21kworker/u8:1+events_unbound09:29:161
3543278994135,5cyclictest3787242-21kworker/u8:1+flush-8:011:24:141
3543278994135,4cyclictest3560240-21kworker/u8:1+events_unbound09:04:121
3543273994136,4cyclictest3678734-21kworker/u8:1+events_unbound09:30:010
3543278994036,3cyclictest3538098-21kworker/u8:1+events_unbound07:14:131
3543278994035,4cyclictest3678734-21kworker/u8:1+events_unbound09:34:161
3543278994034,4cyclictest3506120-21kworker/u8:0+flush-8:007:19:041
3543278994034,3cyclictest3659293-21kworker/u8:0+events_unbound09:59:051
3543278994033,5cyclictest3787242-21kworker/u8:1+flush-8:011:59:121
3543278994033,5cyclictest3717991-21kworker/u8:2+events_unbound10:10:001
3543278993934,3cyclictest3717991-21kworker/u8:2+flush-8:010:14:061
3543278993933,4cyclictest3560240-21kworker/u8:1+events_unbound07:54:161
3543278993931,6cyclictest3717991-21kworker/u8:2+flush-8:010:19:131
3543273993929,7cyclictest278-21systemd-journal08:45:000
3543283993824,12cyclictest3867071-21aten2_r5power_e12:39:012
3543283993824,12cyclictest3679357-21aten2_r5power_p09:29:002
3543278993832,4cyclictest3851925-21kworker/u8:0+flush-8:012:39:191
3543278993831,4cyclictest3575099-21kworker/u8:3+flush-8:007:59:191
3543273993831,5cyclictest3560240-21kworker/u8:1+flush-8:008:49:150
354327399382,31cyclictest3528368-21kworker/0:1+events09:06:560
3543283993724,11cyclictest3673692-21grep09:19:182
3543278993732,4cyclictest3787242-21kworker/u8:1+events_unbound11:49:181
3543278993732,4cyclictest3757645-21kworker/u8:0+flush-8:010:59:111
3543278993731,5cyclictest3787242-21kworker/u8:1+events_unbound11:35:001
3543278993729,6cyclictest3826864-21latency_hist11:55:011
354327399372,30cyclictest3528368-21kworker/0:1+events07:21:110
354327399372,30cyclictest3528368-21kworker/0:1+events07:21:110
354327399370,32cyclictest3678738-21kworker/0:0+events09:46:470
3543283993623,12cyclictest3693375-21unixbench_singl09:39:202
3543278993632,3cyclictest3806865-21kworker/u8:3+events_unbound11:45:011
3543278993632,3cyclictest3619652-21kworker/u8:3+events_unbound08:29:071
3543278993630,5cyclictest3757645-21kworker/u8:0+flush-8:010:49:191
3543278993630,5cyclictest3659293-21kworker/u8:0+flush-8:009:54:191
3543278993630,4cyclictest3560240-21kworker/u8:1+events_unbound08:14:201
3543278993630,4cyclictest3560240-21kworker/u8:1+events_unbound08:14:191
3543278993630,4cyclictest3538098-21kworker/u8:1+events_unbound07:10:011
354327399362,30cyclictest3777866-21kworker/0:2+events11:20:030
354327399361,30cyclictest3678738-21kworker/0:0+events10:52:430
354327399361,30cyclictest3528368-21kworker/0:1+events08:37:430
3543278993531,3cyclictest3787242-21kworker/u8:1+events_unbound12:19:141
3543278993530,3cyclictest3806865-21kworker/u8:3+flush-8:012:29:051
3543278993529,5cyclictest3649449-21kworker/u8:3+flush-8:009:44:181
3543278993529,4cyclictest3634447-21kworker/u8:2+events_unbound09:09:051
3543278993529,4cyclictest3580256-21kworker/u8:0+events_unbound08:19:171
3543278993528,5cyclictest3737215-21kworker/u8:3+events_unbound10:44:161
3543278993429,4cyclictest3717991-21kworker/u8:2+events_unbound10:29:181
3543278993429,4cyclictest3575099-21kworker/u8:3+flush-8:007:44:121
3543278993428,4cyclictest3575099-21kworker/u8:3+events_unbound08:04:001
3543278993427,5cyclictest3743471-21/usr/sbin/munin10:34:131
3543273993429,4cyclictest3580256-21kworker/u8:0+events_unbound08:34:170
3543273993428,4cyclictest3802527-21apt-get11:33:570
3543273993423,9cyclictest278-21systemd-journal10:15:000
354327399341,32cyclictest3821963-21kworker/0:0+events12:13:270
354327399341,32cyclictest3528368-21kworker/0:1+events08:04:110
354327399341,28cyclictest3678738-21kworker/0:0+events10:25:430
354327399341,27cyclictest3821963-21kworker/0:0+events12:16:040
354327399340,33cyclictest3528368-21kworker/0:1+events08:56:110
354328399332,12cyclictest3653577-21ntpq08:59:142
3543283993319,12cyclictest3768414-21fschecks_time10:59:042
3543278993327,4cyclictest3634447-21kworker/u8:2+flush-8:008:59:131
354327399339,19cyclictest3678738-21kworker/0:0+events10:30:110
3543273993324,7cyclictest278-21systemd-journal12:00:000
3543273993323,8cyclictest3870783-21ntpq12:39:130
3543273993323,7cyclictest3777395-21latency_hist11:05:010
354327399332,30cyclictest3821963-21kworker/0:0+events12:00:030
354327399332,30cyclictest3678738-21kworker/0:0+events09:58:070
354327399332,30cyclictest3528368-21kworker/0:1+events08:27:150
354327399331,31cyclictest3856673-21kworker/0:1+events12:25:590
354327399331,31cyclictest3777866-21kworker/0:2+events11:46:430
354327399331,31cyclictest3678738-21kworker/0:0+events10:00:150
354327399330,27cyclictest3528368-21kworker/0:1+events08:20:390
3543278993226,5cyclictest3717991-21kworker/u8:2+events_unbound10:54:191
3543278993226,5cyclictest3609813-21kworker/u8:2+events_unbound08:24:061
3543278993225,5cyclictest3717991-21kworker/u8:2+flush-8:010:24:141
354327399328,23cyclictest3821963-21kworker/0:0+events12:09:430
354327399322,26cyclictest3528368-21kworker/0:1+events07:55:150
3543273993210,21cyclictest3678738-21kworker/0:0+events09:33:510
354327399320,30cyclictest3528368-21kworker/0:1+events08:53:480
354327399320,27cyclictest3821963-21kworker/0:0+events12:20:390
354328399317,8cyclictest3649282-21cat08:55:012
3543283993112,2cyclictest0-21swapper/210:49:182
3543283993112,17cyclictest3737759-21cron10:25:002
3543278993127,3cyclictest3659293-21kworker/u8:0+flush-8:009:14:171
3543278993127,3cyclictest3659293-21kworker/u8:0+flush-8:009:14:171
3543278993126,3cyclictest3631965-21kthreadcore08:39:081
3543278993125,5cyclictest3787242-21kworker/u8:1+flush-8:012:04:131
354327399311,29cyclictest3528368-21kworker/0:1+events08:13:390
354327399311,29cyclictest3528368-21kworker/0:1+events08:13:390
354327399311,25cyclictest3678738-21kworker/0:0+events09:40:110
354327399310,30cyclictest3777866-21kworker/0:2+events11:17:310
354327399310,26cyclictest3528368-21kworker/0:1+events07:11:320
354328399303,6cyclictest3708765-21apt-get09:58:592
354328399302,8cyclictest3860938-21ntpq12:29:112
354328399302,6cyclictest3694052-21apt-get09:43:582
3543283993024,4cyclictest3595324-21apt-get08:03:572
3543283993015,13cyclictest0-21swapper/208:09:072
3543283993011,3cyclictest0-21swapper/210:04:102
3543278993024,4cyclictest3634447-21kworker/u8:2+events_unbound08:54:111
3543278993023,5cyclictest3717991-21kworker/u8:2+events_unbound11:09:011
354327399309,19cyclictest3777866-21kworker/0:2+events11:10:030
354327399302,27cyclictest3528368-21kworker/0:1+events07:38:350
354327399302,24cyclictest3856673-21kworker/0:1+events12:30:080
354327399300,29cyclictest3678738-21kworker/0:0+events10:22:120
354327399300,29cyclictest3528368-21kworker/0:1+events07:33:390
36166672290,4sleep30-21swapper/308:24:083
3543283992919,8cyclictest3625155-21fschecks_count08:34:022
3543283992915,12cyclictest3551053-21fschecks_time07:19:052
3543283992911,2cyclictest0-21swapper/209:54:012
3543283992910,6cyclictest3565605-21anacron07:32:372
3543278992924,4cyclictest3737215-21kworker/u8:3+events_unbound10:39:141
3543278992924,4cyclictest3659293-21kworker/u8:0+events_unbound10:04:181
354327399298,19cyclictest3528368-21kworker/0:1+events09:15:120
354327399296,19cyclictest3528368-21kworker/0:1+events09:20:070
354327399292,26cyclictest3777866-21kworker/0:2+events11:28:270
354327399292,26cyclictest3678738-21kworker/0:0+events10:40:030
354327399292,26cyclictest3678738-21kworker/0:0+events10:16:550
3543273992917,9cyclictest3811845-21apt-get11:40:010
354327399291,27cyclictest3528368-21kworker/0:1+events09:10:470
354327399291,27cyclictest3528368-21kworker/0:1+events09:10:470
354328399283,5cyclictest3752147-21ntpq10:39:122
3543283992823,3cyclictest3846668-21unixbench_singl12:14:192
354328399281,7cyclictest3787772-21apt-get11:18:592
354328399281,6cyclictest3763163-21apt-get10:53:592
3543283992811,2cyclictest0-21swapper/208:49:132
3543278992825,2cyclictest3861564-21kworker/u8:1+events_unbound12:34:001
3543278992823,4cyclictest3649449-21kworker/u8:3+flush-8:009:24:181
3543278992821,5cyclictest3560240-21kworker/u8:1+events_unbound07:29:031
354327399287,20cyclictest3528368-21kworker/0:1+events08:16:110
354327399284,19cyclictest3528368-21kworker/0:1+events07:25:110
354327399282,25cyclictest3777866-21kworker/0:2+events11:44:390
354327399281,26cyclictest3762647-21kworker/0:1+events11:09:040
354327399281,26cyclictest3678738-21kworker/0:0+events09:36:110
354327399281,26cyclictest3528368-21kworker/0:1+events08:06:590
354327399280,27cyclictest3678738-21kworker/0:0+events10:36:520
354328399279,3cyclictest0-21swapper/208:14:072
354328399279,3cyclictest0-21swapper/208:14:072
354328399273,7cyclictest3855977-21ntpq12:24:182
354328399272,8cyclictest3590415-21apt-get07:58:592
354328399272,8cyclictest3547631-21ntpq07:14:082
354328399272,13cyclictest0-21swapper/211:12:322
3543283992713,12cyclictest3615334-21fschecks_count08:24:042
3543283992713,12cyclictest0-21swapper/207:30:002
3543283992712,14cyclictest0-21swapper/210:19:192
3543283992712,13cyclictest0-21swapper/211:30:002
3543283992711,2cyclictest0-21swapper/211:24:132
3543278992723,3cyclictest3777906-21kworker/u8:0+flush-8:011:25:361
3543278992722,3cyclictest3787242-21kworker/u8:1+flush-8:012:09:041
3543278992719,6cyclictest3851925-21kworker/u8:0+events_unbound12:24:181
354327399276,20cyclictest3528368-21kworker/0:1+events07:45:390
3543273992722,3cyclictest3762609-21idleruntime-cro10:50:000
354327399271,25cyclictest3528368-21kworker/0:1+events07:50:350
354327399271,25cyclictest3528368-21kworker/0:1+events07:16:510
354328399266,7cyclictest3656331-21cut09:04:082
354328399266,7cyclictest3587411-21tr07:54:072
354328399266,6cyclictest3832628-21cut12:04:002
354328399266,6cyclictest3662892-21tr09:09:092
354328399262,7cyclictest3811845-21apt-get11:40:022
354328399262,6cyclictest3865832-21ntpq12:34:112
354328399262,4cyclictest3837490-21apt-get12:09:012
354328399261,8cyclictest3571232-21ps07:39:062
354328399261,7cyclictest3698966-21apt-get09:49:002
3543283992613,2cyclictest0-21swapper/207:21:462
3543283992613,2cyclictest0-21swapper/207:21:462
3543283992613,11cyclictest0-21swapper/208:39:032
3543283992611,13cyclictest0-21swapper/211:09:182
3543283992610,3cyclictest0-21swapper/211:54:082
3543278992621,3cyclictest3506120-21kworker/u8:0-ext4-rsv-conversion07:25:001
3543278992621,3cyclictest3506120-21kworker/u8:0-ext4-rsv-conversion07:25:001
3543278992620,5cyclictest3580256-21kworker/u8:0+events_unbound08:34:031
354327399267,18cyclictest3528368-21kworker/0:1+events09:01:110
35384402263,4sleep00-21swapper/007:06:470
354328399259,3cyclictest0-21swapper/208:44:102
354328399257,7cyclictest3664954-21awk09:14:062
354328399257,7cyclictest3664954-21awk09:14:052
354328399256,6cyclictest3817602-21cut11:49:002
354328399256,6cyclictest3756359-21cut10:44:072
354328399255,8cyclictest3738804-21df10:29:032
3543278992521,3cyclictest3659293-21kworker/u8:0+events_unbound09:49:021
3543278992521,3cyclictest3565619-21kworker/u8:0+events_unbound07:35:381
3543278992520,4cyclictest3659293-21kworker/u8:0+flush-8:009:39:191
354327399259,15cyclictest3678738-21kworker/0:0+events10:55:390
354327399252,22cyclictest3678738-21kworker/0:0+events10:06:310
3543283992411,2cyclictest0-21swapper/208:19:082
354328399237,6cyclictest3850999-21netstat12:19:112
3543283992319,2cyclictest3580766-21cpuspeed_turbos07:49:002
3543283992313,2cyclictest0-21swapper/211:36:242
3543278992317,5cyclictest3806865-21kworker/u8:3+events_unbound12:14:031
354328399222,13cyclictest0-21swapper/208:28:232
3543283992219,2cyclictest3723760-21cpuspeed_turbos10:14:002
3543283992218,2cyclictest0-21swapper/207:10:002
3543283992217,3cyclictest3579874-21unixbench_singl07:44:182
3543278992214,4cyclictest0-21swapper/111:03:591
35622152200,2sleep3471rcuc/307:29:123
3543283992016,2cyclictest3684471-21cut09:34:022
35428672203,9sleep30-21swapper/307:09:153
3543283991915,3cyclictest3719142-21tr10:09:052
36825792180,3chrt575-21kworker/3:2+events09:29:083
354328399189,7cyclictest3746955-21tr10:34:092
3543283991812,4cyclictest0-21swapper/211:04:012
3543283991713,2cyclictest0-21swapper/211:55:012
3543283991613,2cyclictest0-21swapper/209:22:262
3543283991612,3cyclictest3806916-21idleruntime-cro11:35:002
37997882156,5sleep30-21swapper/311:29:093
38423512145,5sleep30-21swapper/312:13:593
37058162140,2sleep3471rcuc/309:54:073
36547132146,5sleep30-21swapper/309:04:013
38566582130,2sleep3481ktimers/312:25:013
38118332132,7sleep30-21swapper/311:40:003
38019862132,6sleep30-21swapper/311:30:013
37761882132,7sleep30-21swapper/311:04:093
37681002132,7sleep30-21swapper/310:59:003
37626342132,6sleep30-21swapper/310:50:013
37233782136,4sleep30-21swapper/310:12:143
36844522132,7sleep30-21swapper/309:34:023
36440672132,6sleep30-21swapper/308:50:013
35898472132,7sleep30-21swapper/307:55:013
35544972132,7sleep30-21swapper/307:19:143
35482052132,6sleep30-21swapper/307:15:013
38625732122,6sleep30-21swapper/312:34:053
38575532122,6sleep30-21swapper/312:29:033
38392862122,6sleep30-21swapper/312:09:133
38328392122,5sleep30-21swapper/312:04:043
38226482123,5sleep30-21swapper/311:54:013
37868292122,6sleep30-21swapper/311:14:173
37822522122,6sleep30-21swapper/311:09:193
37589682122,6sleep30-21swapper/310:49:093
37486682122,6sleep30-21swapper/310:39:023
37327632122,6sleep30-21swapper/310:19:203
37186132122,6sleep30-21swapper/310:09:013
36945582122,6sleep30-21swapper/309:44:063
36929392122,6sleep30-21swapper/309:39:163
36748842122,6sleep30-21swapper/309:24:073
36602142122,6sleep30-21swapper/309:09:073
36541192122,6sleep30-21swapper/309:00:003
36400762122,6sleep30-21swapper/308:49:053
36350102122,6sleep30-21swapper/308:44:033
36338152122,6sleep30-21swapper/308:39:183
36198722122,6sleep30-21swapper/308:27:583
36046412122,6sleep30-21swapper/308:10:023
36046412122,6sleep30-21swapper/308:10:013
35953282122,6sleep30-21swapper/308:04:003
35844172122,6sleep30-21swapper/307:49:153
35756402122,6sleep30-21swapper/307:44:013
35658372122,6sleep30-21swapper/307:34:023
35599952121,7sleep30-21swapper/307:25:003
35599952121,7sleep30-21swapper/307:25:003
38667002112,5sleep30-21swapper/312:35:173
38510142113,5sleep30-21swapper/312:19:123
38268452110,6sleep30-21swapper/311:55:013
38174322112,6sleep30-21swapper/311:47:353
38124082112,6sleep30-21swapper/311:41:103
37924172112,5sleep30-21swapper/311:20:183
37872382112,5sleep30-21swapper/311:15:013
37530512112,6sleep30-21swapper/310:40:343
37434642112,5sleep30-21swapper/310:33:563
37385342112,5sleep30-21swapper/310:28:593
37371532111,6sleep30-21swapper/310:24:133
37134952112,6sleep30-21swapper/310:01:273
37084502112,5sleep30-21swapper/309:55:183
36988432112,6sleep30-21swapper/309:47:473
36689062112,5sleep30-21swapper/309:15:013
36246082112,6sleep30-21swapper/308:30:393
36099482112,6sleep30-21swapper/308:17:153
36001722112,5sleep30-21swapper/308:08:133
35901022112,5sleep30-21swapper/307:55:173
35703722112,6sleep30-21swapper/307:35:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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