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2026-06-01 - 20:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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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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 rack0slot4s.osadl.org (updated Mon Jun 01, 2026 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11746842370363,5sleep120-21swapper/1219:06:514
11746182364344,13sleep90-21swapper/919:05:5915
11746032353332,14sleep140-21swapper/1419:05:476
11749282351331,13sleep40-21swapper/419:09:4010
11748602351330,14sleep20-21swapper/219:09:068
11747472351331,13sleep130-21swapper/1319:07:405
11746942351331,13sleep50-21swapper/519:07:0011
11714542351332,12sleep70-21swapper/719:05:0913
11714552350330,13sleep80-21swapper/819:05:1014
11747662349329,13sleep150-21swapper/1519:07:587
11746262349329,13sleep00-21swapper/019:06:070
11749232348328,13sleep10-21swapper/119:09:371
11748242347327,13sleep100-21swapper/1019:08:412
11747122343321,14sleep60-21swapper/619:07:1712
11747972342320,14sleep110-21swapper/1119:08:263
11714502340320,13sleep30-21swapper/319:05:059
1175364994645,1cyclictest1377282-21kworker/u32:0-rpciod23:18:178
1175383994342,1cyclictest1340222-21kworker/u32:5+events_unbound22:00:2214
1175364994241,1cyclictest1377395-21kworker/u32:3+events_unbound23:20:188
1175364993937,0cyclictest1416545-21ssh22:57:118
1175364993837,1cyclictest0-21swapper/222:04:158
1175364993736,1cyclictest1769-21arpwatch21:41:478
1175364993734,3cyclictest0-21swapper/223:46:138
1175386993628,7cyclictest0-21swapper/919:27:5315
1175383993632,4cyclictest97-21ksoftirqd/823:18:1714
117537499366,29cyclictest0-21swapper/522:15:0911
1175364993636,0cyclictest1435626-21ssh23:11:418
1175364993634,0cyclictest0-21swapper/223:07:198
1175364993631,4cyclictest1502820-21kworker/u32:0+events_unbound00:07:508
117536499360,33cyclictest0-21swapper/222:33:598
1175383993535,0cyclictest0-21swapper/822:47:1914
1175374993535,0cyclictest0-21swapper/523:43:5411
1175364993534,0cyclictest0-21swapper/221:10:138
1175364993533,2cyclictest0-21swapper/223:39:348
1175364993533,2cyclictest0-21swapper/221:22:318
1175364993533,0cyclictest0-21swapper/223:42:418
1175364993532,3cyclictest0-21swapper/222:09:578
1175364993532,3cyclictest0-21swapper/200:35:178
1175364993531,3cyclictest1457795-21cpuspeed_turbos23:30:118
1175364993531,2cyclictest0-21swapper/200:25:508
117536499350,1cyclictest0-21swapper/221:26:078
1175383993434,0cyclictest0-21swapper/823:08:3914
1175383993434,0cyclictest0-21swapper/800:30:3714
1175383993434,0cyclictest0-21swapper/800:24:4714
1175383993434,0cyclictest0-21swapper/800:11:1114
117537499345,29cyclictest0-21swapper/522:27:3711
1175374993434,0cyclictest0-21swapper/522:13:0511
1175374993434,0cyclictest0-21swapper/521:41:3711
1175374993434,0cyclictest0-21swapper/521:22:3911
1175374993434,0cyclictest0-21swapper/521:11:4111
1175364993433,1cyclictest0-21swapper/222:27:578
1175364993432,2cyclictest0-21swapper/223:59:248
1175364993432,2cyclictest0-21swapper/200:10:478
1175364993432,2cyclictest0-21swapper/200:03:278
1175364993432,0cyclictest0-21swapper/200:17:538
1175364993431,2cyclictest1346689-21kworker/2:0-events22:36:058
1175364993431,2cyclictest0-21swapper/223:04:488
1175364993430,3cyclictest1402821-21kworker/2:222:47:048
117536499342,1cyclictest1337145-21kworker/u32:1+writeback22:24:598
117536499340,32cyclictest1332762-21kworker/2:2-events21:59:318
117536499340,32cyclictest1332762-21kworker/2:2-events21:59:318
1175357993434,0cyclictest0-21swapper/023:19:250
1175357993434,0cyclictest0-21swapper/023:04:150
117540099330,32cyclictest0-21swapper/1400:11:086
1175383993333,0cyclictest0-21swapper/822:55:1914
1175383993333,0cyclictest0-21swapper/822:17:5914
1175383993333,0cyclictest0-21swapper/821:22:1514
1175383993333,0cyclictest0-21swapper/821:18:2714
1175383993333,0cyclictest0-21swapper/821:05:1914
1175383993333,0cyclictest0-21swapper/800:37:2714
117537999330,1cyclictest0-21swapper/723:17:1513
1175374993333,0cyclictest1285665-21kworker/5:0-events21:45:1511
1175374993333,0cyclictest1285665-21kworker/5:0-events21:45:1511
1175374993333,0cyclictest0-21swapper/520:05:5511
1175374993332,0cyclictest211rcu_preempt22:31:0811
117537499332,1cyclictest0-21swapper/523:18:1811
1175364993332,1cyclictest0-21swapper/200:33:438
1175364993332,0cyclictest0-21swapper/221:54:478
1175364993332,0cyclictest0-21swapper/221:54:478
1175364993332,0cyclictest0-21swapper/221:47:198
1175364993332,0cyclictest0-21swapper/221:47:198
1175364993331,2cyclictest1510884-21kworker/2:0-events00:22:078
1175364993330,3cyclictest0-21swapper/219:55:178
117536499330,32cyclictest1361003-21sort22:15:118
117536499330,31cyclictest1485173-21kworker/2:2+mm_percpu_wq23:51:098
1175357993330,1cyclictest211rcu_preempt00:12:430
117540099326,25cyclictest0-21swapper/1420:18:026
117540099320,1cyclictest0-21swapper/1420:29:376
1175386993232,0cyclictest0-21swapper/922:43:5915
1175386993232,0cyclictest0-21swapper/919:57:1115
1175386993230,0cyclictest0-21swapper/919:34:2915
117538699320,32cyclictest1051ktimers/922:58:3115
1175383993232,0cyclictest0-21swapper/823:50:2114
1175383993232,0cyclictest0-21swapper/823:43:5314
1175383993232,0cyclictest0-21swapper/823:30:5314
1175383993232,0cyclictest0-21swapper/822:38:3314
1175383993232,0cyclictest0-21swapper/822:28:1114
1175383993232,0cyclictest0-21swapper/821:29:0314
1175383993232,0cyclictest0-21swapper/800:09:3514
1175383993231,1cyclictest1162101-21kworker/u32:1+events_unbound19:15:0214
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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