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2026-09-20 - 19:15

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 Sun Sep 20, 2026 12:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
277969910531049,3cyclictest21954-21kworker/3:0+events10:04:213
277799910531049,3cyclictest20877-21turbostat09:59:540
277969910521050,2cyclictest21954-21kworker/3:0+events10:28:173
277969910521050,2cyclictest20018-21kworker/3:2+events11:47:123
277969910521050,2cyclictest1688-21kworker/3:1+events09:20:223
277969910521049,3cyclictest8889-21kworker/3:3+events10:31:073
277969910521048,3cyclictest21954-21kworker/3:0+events09:26:513
277969910511049,2cyclictest21954-21kworker/3:0+events11:18:363
277969910511048,3cyclictest29923-21kworker/3:2+events10:15:223
277969910511048,3cyclictest12149-21kworker/3:1+events09:51:043
277969910511047,3cyclictest20018-21kworker/3:2+events11:58:353
277939910511049,2cyclictest21486-21kworker/2:2+events09:58:402
277799910511047,3cyclictest21341-21kworker/0:1+events10:41:050
277969910501048,2cyclictest21954-21kworker/3:0+events10:08:463
277969910501048,2cyclictest12149-21kworker/3:1+events09:46:143
277969910501048,2cyclictest11314-21kworker/3:1+events11:35:443
277969910501047,3cyclictest8889-21kworker/3:3+events10:23:163
277969910501047,3cyclictest29923-21kworker/3:2+events10:12:133
277969910501046,3cyclictest20018-21kworker/3:2+events11:50:223
277799910491047,2cyclictest21341-21kworker/0:1+events11:01:590
277799910481047,1cyclictest2314-21kworker/0:0+events10:48:560
277939910471046,1cyclictest26031-21kworker/2:1+events07:34:522
277799910471045,2cyclictest9055-21kworker/0:0+events09:12:140
277799910441042,2cyclictest19900-21kworker/0:0+events11:07:580
277799910441042,2cyclictest18791-21kworker/0:1+events08:30:220
277799910441041,2cyclictest12173-21kworker/0:2+events08:18:210
277939910431042,1cyclictest21486-21kworker/2:2+events10:50:532
277799910431041,2cyclictest9055-21kworker/0:0+events08:59:020
277799910431041,2cyclictest24616-21kworker/0:1+events11:44:370
277799910431041,2cyclictest18791-21kworker/0:1+events08:41:060
277799910421040,2cyclictest21341-21kworker/0:1+events09:42:540
277799910421040,2cyclictest18791-21kworker/0:1+events08:54:030
277799910421040,2cyclictest18791-21kworker/0:1+events08:54:030
277799910421039,3cyclictest18791-21kworker/0:1+events08:23:180
277799910421037,4cyclictest9055-21kworker/0:0+events09:06:070
277799910401037,3cyclictest18791-21kworker/0:1+events08:27:100
277799910391037,2cyclictest9012-21kworker/0:2+events10:57:570
277799910391037,2cyclictest21341-21kworker/0:1+events09:37:000
277799910381035,3cyclictest31507-21kworker/0:2+events09:32:580
277799910371035,2cyclictest31472-21kworker/0:0+events11:20:440
277799910361034,2cyclictest12173-21kworker/0:2+events08:11:170
277799910351032,3cyclictest12173-21kworker/0:2+events08:06:060
277869910341033,1cyclictest10344-21kworker/1:2+events12:01:081
277799910331031,2cyclictest9012-21kworker/0:2+events11:11:070
277799910321030,2cyclictest18791-21kworker/0:1+events09:01:060
277799910321029,3cyclictest26922-21kworker/0:0+events08:39:040
277939910311029,2cyclictest25189-21turbostat10:04:552
277799910311028,3cyclictest9055-21kworker/0:0+events09:16:480
277799910311027,3cyclictest26922-21kworker/0:0+events08:45:200
277869910291026,3cyclictest15710-21turbostat11:44:561
277869910271026,1cyclictest29610-21turbostat10:09:541
277869910201018,2cyclictest19762-21turbostat10:34:551
277869910181016,2cyclictest1282-21kworker/1:0+events12:21:071
277869910171016,1cyclictest1282-21kworker/1:0+events12:14:531
277869910161013,3cyclictest24072-21turbostat10:39:551
277869910141013,1cyclictest10308-21kworker/1:0+events11:32:471
277869910111009,2cyclictest10308-21kworker/1:0+events11:26:511
277869910071003,2cyclictest30203-21kworker/1:2+events12:35:231
277869910051004,1cyclictest1282-21kworker/1:0+events12:06:401
277869910001000,0cyclictest20742-21kworker/1:2+events12:25:221
2778699998996,2cyclictest16046-21kworker/1:1+events12:19:031
2779399996995,1cyclictest26031-21kworker/2:1+events07:10:222
2779699991989,2cyclictest4739-21turbostat10:54:553
2778699991988,3cyclictest7830-21turbostat09:44:551
2778699990989,1cyclictest16046-21kworker/1:1+events12:33:281
2779399980979,1cyclictest26031-21kworker/2:1+events07:38:382
2779699977974,3cyclictest30776-21turbostat11:24:553
2779399969968,1cyclictest26031-21kworker/2:1+events07:59:472
2779399966964,2cyclictest31402-21kworker/2:2+events07:20:452
2778699958956,2cyclictest14989-21turbostat10:29:541
2778699953951,2cyclictest26447-21turbostat11:19:541
2778699946944,2cyclictest22135-21turbostat11:14:551
2777999941938,3cyclictest28765-21turbostat11:59:550
2779699940938,2cyclictest29064-21turbostat08:34:563
2778699925922,3cyclictest351-21turbostat10:49:541
2778699916913,3cyclictest17664-21turbostat09:19:551
2779699913911,2cyclictest20538-21turbostat08:14:563
2779699913910,3cyclictest16502-21turbostat08:04:553
2779399903902,1cyclictest9441-21kworker/2:2+events07:45:202
2779399902901,1cyclictest26031-21kworker/2:1+events07:15:222
2779399898897,1cyclictest7363-21kworker/2:0+events07:42:562
2779399891890,1cyclictest9441-21kworker/2:2+events07:51:302
2778699891889,2cyclictest20079-21turbostat11:49:561
2779399882881,1cyclictest26031-21kworker/2:1+events07:28:362
2779399882880,2cyclictest7069-21turbostat11:34:542
2779399881880,1cyclictest26031-21kworker/2:1+events08:04:422
2777999864862,2cyclictest16543-21turbostat09:54:540
2779399863861,2cyclictest9075-21turbostat10:59:542
2779399679678,1cyclictest16543-21turbostat09:54:542
2778699671668,3cyclictest30776-21turbostat11:24:541
2778699659655,4cyclictest28765-21turbostat11:59:551
2777999645642,3cyclictest16502-21turbostat08:04:560
2779699643641,2cyclictest15710-21turbostat11:44:563
2779699629626,3cyclictest20877-21turbostat09:59:553
2777999611607,3cyclictest24072-21turbostat10:39:550
2779699607604,3cyclictest7830-21turbostat09:44:553
2779699600597,3cyclictest7069-21turbostat11:34:543
2779399577576,1cyclictest351-21turbostat10:49:552
2779699563560,3cyclictest22135-21turbostat11:14:553
2777999545544,1cyclictest26447-21turbostat11:19:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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