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2026-01-05 - 10:43

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

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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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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack0slot6s.osadl.org (updated Mon Jan 05, 2026 00:46:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8697052269262,4sleep150-21swapper/1519:08:207
8696942267260,4sleep80-21swapper/819:08:1318
8697392251244,4sleep100-21swapper/1019:08:342
8697952238198,12sleep120-21swapper/1219:09:174
8695502234193,12sleep140-21swapper/1419:06:386
8697692233213,13sleep160-21swapper/1619:09:018
8665122233212,13sleep190-21swapper/1919:05:0311
8695392232213,11sleep60-21swapper/619:06:3016
8697142230209,13sleep30-21swapper/319:08:2813
8697122230222,5sleep10-21swapper/119:08:261
8696932230209,13sleep70-21swapper/719:08:1117
8698052229209,13sleep170-21swapper/1719:09:229
8697612229208,13sleep90-21swapper/919:08:5419
8695352229208,13sleep20-21swapper/219:06:2612
8696892226207,12sleep40-21swapper/419:08:0914
8698012225204,14sleep130-21swapper/1319:09:185
8697082225202,15sleep180-21swapper/1819:08:2210
8697572222202,13sleep50-21swapper/519:08:5015
8697632215196,12sleep110-21swapper/1119:08:563
8696122215195,12sleep00-21swapper/019:07:240
87029999645,28cyclictest0-21swapper/1600:22:398
87030499515,28cyclictest0-21swapper/1721:07:409
870268994818,29cyclictest0-21swapper/621:46:5916
870277994012,28cyclictest0-21swapper/921:46:5819
870306993912,26cyclictest1861irq_work/1823:46:5910
870306993911,27cyclictest1861irq_work/1800:26:5910
870248993914,25cyclictest261irq_work/020:40:590
870294993811,26cyclictest1501irq_work/1419:47:596
870255993810,27cyclictest401irq_work/219:17:2512
11286202380,0sleep150-21swapper/1500:15:027
87027099374,27cyclictest0-21swapper/700:16:5917
87029699358,26cyclictest0-21swapper/1519:54:597
87029699357,27cyclictest0-21swapper/1521:25:597
87029499342,26cyclictest0-21swapper/1419:43:596
87026899343,0cyclictest0-21swapper/621:16:5916
87025599349,0cyclictest0-21swapper/222:41:5912
87025099348,25cyclictest0-21swapper/123:47:591
870304993333,0cyclictest0-21swapper/1723:46:379
87026499337,1cyclictest671irq_work/519:47:3315
870294993232,0cyclictest0-21swapper/1400:14:596
87028799325,27cyclictest1321irq_work/1222:21:594
87028099325,25cyclictest0-21swapper/1020:10:592
87028099325,25cyclictest0-21swapper/1020:10:582
870264993232,0cyclictest0-21swapper/500:14:5915
87026499320,0cyclictest0-21swapper/522:12:0715
870260993232,0cyclictest0-21swapper/400:33:5914
870296993111,19cyclictest183150irq/150-eno120:35:167
87028099315,25cyclictest0-21swapper/1020:38:592
870274993119,0cyclictest0-21swapper/800:20:2518
870264993117,0cyclictest0-21swapper/500:27:5415
87025099310,31cyclictest0-21swapper/100:06:031
870299993029,1cyclictest1119105-21ssh00:06:038
870289993030,0cyclictest0-21swapper/1319:46:505
870287993030,0cyclictest0-21swapper/1200:10:414
87027799300,29cyclictest0-21swapper/921:05:5819
87027799300,22cyclictest0-21swapper/923:10:1719
87027799300,0cyclictest0-21swapper/920:30:1619
870274993018,0cyclictest0-21swapper/820:38:3318
870274993017,0cyclictest0-21swapper/819:24:3218
87027099300,30cyclictest0-21swapper/721:17:2317
870264993018,0cyclictest0-21swapper/500:23:0115
870264993017,0cyclictest0-21swapper/523:26:2115
870264993017,0cyclictest0-21swapper/523:26:2115
870264993017,0cyclictest0-21swapper/500:31:5615
870264993017,0cyclictest0-21swapper/500:09:1615
870264993016,0cyclictest0-21swapper/500:16:3715
87025899303,26cyclictest10813261kworker/u80:6+i91523:56:5913
870306992929,0cyclictest0-21swapper/1819:19:1810
870280992925,1cyclictest0-21swapper/1021:17:232
870277992929,0cyclictest0-21swapper/900:29:5819
87027799290,28cyclictest0-21swapper/923:45:4519
87027799290,28cyclictest0-21swapper/921:25:2019
87027799290,28cyclictest0-21swapper/900:01:1319
87027799290,21cyclictest0-21swapper/922:00:5519
87027799290,21cyclictest0-21swapper/921:14:0719
870274992929,0cyclictest0-21swapper/821:40:2418
870274992919,0cyclictest0-21swapper/823:56:1218
870274992919,0cyclictest0-21swapper/819:43:1318
870268992925,4cyclictest0-21swapper/622:12:5916
870264992916,0cyclictest0-21swapper/500:35:2715
870264992915,14cyclictest0-21swapper/522:33:5215
870258992923,6cyclictest0-21swapper/321:55:5913
870255992929,0cyclictest0-21swapper/200:14:5912
870250992929,0cyclictest0-21swapper/122:07:431
870250992929,0cyclictest0-21swapper/120:29:171
870248992929,0cyclictest0-21swapper/000:35:450
87024899290,29cyclictest0-21swapper/019:35:190
175698290,27rtkit-daemon861248-21kworker/0:3+pm21:20:020
870309992828,0cyclictest0-21swapper/1900:10:4311
87030999280,28cyclictest0-21swapper/1921:16:5911
870306992828,0cyclictest0-21swapper/1800:10:4310
870296992828,0cyclictest183150irq/150-eno100:22:517
870287992828,0cyclictest0-21swapper/1223:29:074
870287992828,0cyclictest0-21swapper/1223:29:074
87027799281,2cyclictest326418-21CPU19
87027799281,1cyclictest326418-21CPU19
87027799280,28cyclictest0-21swapper/922:55:1119
87027799280,28cyclictest0-21swapper/921:56:0219
87027799280,28cyclictest0-21swapper/920:28:5719
87027799280,28cyclictest0-21swapper/920:09:4419
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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