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2026-08-24 - 16:05

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, 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 rack8slot6s.osadl.org (updated Mon Aug 24, 2026 12:43:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137499910541050,2cyclictest19381-21kworker/0:2+events07:24:360
137499910541049,3cyclictest5298-21kworker/0:1+events09:11:280
137499910531050,2cyclictest5298-21kworker/0:1+events08:59:040
137499910531050,2cyclictest21785-21kworker/0:2+events10:13:270
137499910531049,2cyclictest5298-21kworker/0:1+events08:54:250
137499910531049,2cyclictest24104-21kworker/0:1+events11:10:430
137499910531049,2cyclictest14007-21kworker/0:1+events10:01:400
137499910531049,2cyclictest11271-21kworker/0:2+events07:11:500
137499910531048,3cyclictest21785-21kworker/0:2+events10:31:510
137499910521049,2cyclictest7208-21kworker/0:0+events12:18:350
137499910521049,2cyclictest24104-21kworker/0:1+events11:08:180
137499910521048,2cyclictest28162-21kworker/0:2+events12:03:070
137499910521048,2cyclictest21785-21kworker/0:2+events10:37:130
137499910511049,2cyclictest5298-21kworker/0:1+events09:05:220
137499910511049,2cyclictest28162-21kworker/0:2+events12:07:210
137499910511049,2cyclictest22381-21kworker/0:2+events09:02:320
137499910511048,3cyclictest24104-21kworker/0:1+events11:59:500
137499910511048,3cyclictest21611-21turbostat10:49:550
137659910501048,2cyclictest4281-21kworker/2:2+events09:41:042
137499910501048,2cyclictest5298-21kworker/0:1+events09:23:040
137499910501048,2cyclictest5298-21kworker/0:1+events09:16:270
137499910501048,2cyclictest21785-21kworker/0:2+events10:41:480
137699910491047,2cyclictest26144-21kworker/3:2+events10:53:373
137499910491047,2cyclictest7767-21kworker/0:0+events09:57:100
137499910491047,2cyclictest16391-21kworker/0:0+events07:15:460
137699910481046,2cyclictest12216-21kworker/3:1+events12:20:423
137499910481046,2cyclictest24104-21kworker/0:1+events11:54:330
137699910461044,2cyclictest18725-21kworker/3:1+events10:15:423
137589910461045,1cyclictest30735-21kworker/1:0+events12:14:051
137699910451044,1cyclictest21776-21kworker/3:0+events11:34:423
137699910451044,1cyclictest12094-21kworker/3:2+events09:25:323
137659910421040,2cyclictest4281-21kworker/2:2+events09:46:502
137699910411039,2cyclictest15179-21kworker/3:0+events12:37:473
137659910391035,4cyclictest3362-21kworker/2:2+events11:02:452
137659910381035,3cyclictest5165-21kworker/2:0+events09:53:592
137589910321031,1cyclictest23192-21kworker/1:2+events10:06:531
137499910201018,2cyclictest15656-21turbostat08:39:550
137499910191016,3cyclictest16921-21turbostat12:29:550
137699910151014,1cyclictest16746-21kworker/3:1+events11:19:323
137659910141012,2cyclictest26108-21turbostat12:39:552
137499910091007,2cyclictest21367-21turbostat09:39:550
137659910041001,3cyclictest2674-21turbostat12:14:562
137699910031002,1cyclictest11601-21kworker/3:0+events08:29:443
13769991000999,1cyclictest5424-21kworker/3:2+events08:34:363
1376599995993,2cyclictest17732-21turbostat07:24:552
1375899995993,2cyclictest7264-21turbostat12:19:551
1376999994993,1cyclictest4647-21kworker/3:2+events10:26:513
1376999993992,1cyclictest5424-21kworker/3:2+events08:09:473
1376999983982,1cyclictest447-21kworker/3:2+events11:48:203
1375899982980,2cyclictest11429-21kworker/1:0+events09:39:021
1375899978977,1cyclictest17169-21kworker/1:1+events10:56:381
1376999976975,1cyclictest16746-21kworker/3:1+events11:28:383
1376999975973,2cyclictest5369-21kworker/3:1+events11:41:253
1376999975973,2cyclictest5369-21kworker/3:1+events11:41:253
1376999970969,1cyclictest27565-21kworker/3:2+events07:50:223
1376999965964,1cyclictest25764-21kworker/3:0+events07:44:303
1374999962959,3cyclictest30637-21turbostat11:34:550
1376999959957,2cyclictest11601-21kworker/3:0+events08:36:073
1376599959955,2cyclictest11998-21turbostat10:04:562
1376999956954,2cyclictest16763-21turbostat09:34:553
1376999953952,1cyclictest18725-21kworker/3:1+events10:23:413
1376999946945,1cyclictest447-21kworker/3:2+events11:38:463
1376999946944,2cyclictest5424-21kworker/3:2+events08:20:433
1376999943942,1cyclictest16746-21kworker/3:1+events11:24:023
1376999940939,1cyclictest27565-21kworker/3:2+events08:00:443
1376999939938,1cyclictest25764-21kworker/3:0+events07:49:483
1376999938937,1cyclictest19729-21kworker/3:1+events07:29:233
1376999937937,0cyclictest17259-21kworker/3:2+events12:34:313
1376999937936,1cyclictest19729-21kworker/3:1+events07:38:403
1376999937936,1cyclictest15179-21kworker/3:0+events12:27:313
1376999934933,1cyclictest27565-21kworker/3:2+events07:55:233
1376999931930,1cyclictest5424-21kworker/3:2+events08:19:023
1376999931930,1cyclictest19821-21kworker/3:1+events08:43:083
1376999929928,1cyclictest19821-21kworker/3:1+events08:46:043
1376999928927,1cyclictest3377-21kworker/3:1+events08:10:233
1376999928927,1cyclictest19729-21kworker/3:1+events07:34:093
1375899906905,1cyclictest13643-21turbostat08:34:551
1375899876871,3cyclictest2685-21turbostat10:29:551
1376599869867,2cyclictest9600-21turbostat08:24:542
1376999864863,1cyclictest2799-21turbostat09:54:553
1376999853851,2cyclictest16641-21turbostat10:09:553
1375899690689,1cyclictest26108-21turbostat12:39:551
1376999672671,1cyclictest21611-21turbostat10:49:553
1376999644643,1cyclictest21250-21turbostat10:14:553
1376999640637,3cyclictest12222-21turbostat11:14:543
1376999633632,1cyclictest17732-21turbostat07:24:553
1375899631630,1cyclictest11998-21turbostat10:04:561
1375899624622,2cyclictest26216-21turbostat10:54:551
1375899599596,3cyclictest30485-21turbostat12:09:561
1374999596595,1cyclictest20122-21turbostat08:49:540
1376599595592,3cyclictest30800-21turbostat10:59:552
1374999572571,1cyclictest2674-21turbostat12:14:560
1374999569566,3cyclictest12025-21turbostat11:49:550
1374999552549,3cyclictest2799-21turbostat09:54:550
1375899548546,2cyclictest16763-21turbostat09:34:551
1376599547545,2cyclictest21367-21turbostat09:39:542
1374999537537,0cyclictest16641-21turbostat10:09:550
1374999520518,2cyclictest2685-21turbostat10:29:550
1374999515512,3cyclictest3000-21turbostat11:04:550
1376999512509,3cyclictest7264-21turbostat12:19:553
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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