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2026-05-14 - 18:09

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 Thu May 14, 2026 00:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22474842373367,4sleep80-21swapper/819:09:0914
22474542364356,5sleep10-21swapper/119:08:461
22472662360341,12sleep60-21swapper/619:06:1012
22474302358340,11sleep140-21swapper/1419:08:276
22475072357335,14sleep130-21swapper/1319:09:315
22473812352332,13sleep50-21swapper/519:07:4511
22473802352332,13sleep40-21swapper/419:07:4410
22472542352333,12sleep110-21swapper/1119:05:583
22439012349328,14sleep20-21swapper/219:05:018
22474262348328,13sleep100-21swapper/1019:08:222
22473452348327,14sleep70-21swapper/719:07:1613
22472972348326,14sleep30-21swapper/319:06:389
22472132348327,14sleep150-21swapper/1519:05:317
22472772346327,13sleep00-21swapper/019:06:200
22473072345324,14sleep90-21swapper/919:06:4415
22473162344323,14sleep120-21swapper/1219:06:484
2247904995454,0cyclictest0-21swapper/420:57:3010
2247904995454,0cyclictest0-21swapper/420:57:2910
2247904995151,0cyclictest0-21swapper/423:35:3310
2247914995042,4cyclictest2318188-21kworker/7:1-events_power_efficient21:09:1813
2247914995042,4cyclictest0-21swapper/719:30:3013
2247904995050,0cyclictest0-21swapper/421:38:0610
2247935994949,0cyclictest0-21swapper/1423:56:416
2247914994942,3cyclictest0-21swapper/720:50:3213
224791499480,44cyclictest871ktimers/720:57:3013
224791499480,44cyclictest871ktimers/720:57:2913
2247935994747,0cyclictest0-21swapper/1421:42:086
2247914994642,4cyclictest0-21swapper/720:45:5713
2247914994642,4cyclictest0-21swapper/720:05:5813
2247914994642,4cyclictest0-21swapper/719:19:0413
2247914994642,0cyclictest0-21swapper/720:37:1313
2247914994642,0cyclictest0-21swapper/719:25:0513
2247914994543,2cyclictest0-21swapper/720:32:2613
2247914994542,3cyclictest0-21swapper/721:03:0613
2247914994542,3cyclictest0-21swapper/721:03:0513
2247914994542,3cyclictest0-21swapper/720:41:5213
2247914994542,3cyclictest0-21swapper/719:51:3013
2247914994541,4cyclictest0-21swapper/720:25:3613
2247914994541,4cyclictest0-21swapper/720:21:1313
2247914994541,4cyclictest0-21swapper/720:18:3413
2247914994541,4cyclictest0-21swapper/720:10:3313
2247914994541,4cyclictest0-21swapper/719:57:0513
224791499451,41cyclictest871ktimers/719:20:4613
224791499451,40cyclictest871ktimers/719:37:1113
2247935994444,0cyclictest0-21swapper/1422:07:506
224791499444,39cyclictest0-21swapper/700:28:0113
2247914994441,3cyclictest0-21swapper/719:49:2113
2247914994441,3cyclictest0-21swapper/719:10:5313
2247914994436,4cyclictest0-21swapper/722:30:3413
224791499440,40cyclictest871ktimers/719:42:0013
2247935994343,0cyclictest0-21swapper/1423:52:416
2247935994342,1cyclictest1491rcuc/1421:49:066
224791499431,41cyclictest871ktimers/723:58:1713
2247904994343,0cyclictest0-21swapper/420:35:3810
2247904994343,0cyclictest0-21swapper/419:50:5310
2247904994343,0cyclictest0-21swapper/419:41:5910
2247904994343,0cyclictest0-21swapper/419:37:2810
2247935994242,0cyclictest0-21swapper/1423:04:556
2247935994242,0cyclictest0-21swapper/1421:27:366
2247935994241,0cyclictest0-21swapper/1421:15:196
2247904994242,0cyclictest0-21swapper/420:44:0510
2247904994242,0cyclictest0-21swapper/420:08:0710
2247904994214,0cyclictest0-21swapper/423:20:3710
2247935994141,0cyclictest0-21swapper/1423:21:516
2247935994141,0cyclictest0-21swapper/1422:52:146
2247935994141,0cyclictest0-21swapper/1419:33:286
2247935994141,0cyclictest0-21swapper/1419:20:456
224791499412,0cyclictest871ktimers/722:36:4013
2247914994118,23cyclictest0-21swapper/720:01:2713
2247914994115,23cyclictest0-21swapper/721:31:4613
2247910994141,0cyclictest0-21swapper/621:19:0312
2247904994141,0cyclictest0-21swapper/421:06:5310
2247904994141,0cyclictest0-21swapper/420:13:1410
224790499413,38cyclictest0-21swapper/419:45:5410
2247935994040,0cyclictest0-21swapper/1423:46:076
2247935994040,0cyclictest0-21swapper/1422:59:116
2247935994040,0cyclictest0-21swapper/1422:47:026
2247935994040,0cyclictest0-21swapper/1422:41:366
2247935994040,0cyclictest0-21swapper/1422:32:426
2247935994040,0cyclictest0-21swapper/1422:20:386
2247935994040,0cyclictest0-21swapper/1422:10:556
2247935994040,0cyclictest0-21swapper/1421:24:306
2247935994040,0cyclictest0-21swapper/1400:31:346
2247931994040,0cyclictest0-21swapper/1322:15:435
2247910994040,0cyclictest0-21swapper/623:05:4112
2247910994040,0cyclictest0-21swapper/600:37:3512
2247910994040,0cyclictest0-21swapper/600:02:3712
2247910994040,0cyclictest0-21swapper/600:02:3712
2247910994039,1cyclictest0-21swapper/623:56:4112
224790499400,0cyclictest0-21swapper/422:51:1210
2247935993939,0cyclictest0-21swapper/1423:44:066
2247935993939,0cyclictest0-21swapper/1423:32:226
2247935993939,0cyclictest0-21swapper/1421:12:086
2247935993939,0cyclictest0-21swapper/1421:07:526
2247935993938,1cyclictest0-21swapper/1423:16:556
2247935993933,4cyclictest0-21swapper/1420:57:306
2247935993933,4cyclictest0-21swapper/1420:57:296
2247922993938,0cyclictest2560159-21kworker/10:2+events00:25:172
2247910993939,0cyclictest0-21swapper/623:35:4512
2247910993939,0cyclictest0-21swapper/623:24:4412
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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