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2026-09-24 - 06:16

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 Thu Sep 24, 2026 00:43:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
273769910521050,2cyclictest20918-21kworker/0:2+events19:35:420
273889910511049,2cyclictest6986-21kworker/2:1+events23:15:442
273919910501048,2cyclictest29304-21kworker/3:1+events20:39:223
273889910501048,2cyclictest26986-21kworker/2:0+events23:23:402
273769910501048,2cyclictest20918-21kworker/0:2+events19:20:210
273769910501046,2cyclictest25324-21kworker/0:2+events22:13:380
273769910491048,1cyclictest18400-21kworker/0:3+events20:14:100
273769910491047,2cyclictest4975-21kworker/0:1+events23:47:550
273769910491047,2cyclictest4975-21kworker/0:1+events00:31:510
273769910491047,2cyclictest4668-21kworker/0:0+events19:46:520
273769910491047,2cyclictest17830-21kworker/0:2+events00:37:540
273889910481045,3cyclictest25622-21turbostat20:29:562
273769910481046,2cyclictest31716-21kworker/0:1+events22:01:440
273919910471045,1cyclictest14742-21kworker/3:0+events00:00:203
273919910461045,1cyclictest24861-21kworker/3:1+events00:13:163
273839910461045,1cyclictest10355-21kworker/1:2+events21:40:431
273769910461044,2cyclictest14925-21kworker/0:2+events20:25:230
273919910451043,2cyclictest20063-21kworker/3:0+events23:43:173
273919910441043,1cyclictest9173-21kworker/3:1+events23:57:323
273919910441040,4cyclictest22230-21turbostat00:39:543
273889910441042,2cyclictest26986-21kworker/2:0+events23:32:432
273769910441042,2cyclictest4407-21kworker/0:0+events21:59:320
273769910441041,3cyclictest4668-21kworker/0:0+events19:52:560
273769910441041,3cyclictest24223-21turbostat23:04:550
273769910441041,3cyclictest20918-21kworker/0:2+events19:29:260
273919910431042,1cyclictest25765-21kworker/3:2+events21:29:303
273919910431042,1cyclictest20063-21kworker/3:0+events23:13:063
273889910431041,2cyclictest27146-21kworker/2:2+events22:31:032
273889910431039,2cyclictest6986-21kworker/2:1+events23:29:542
273769910431041,2cyclictest4668-21kworker/0:0+events19:43:460
273769910431039,3cyclictest18400-21kworker/0:3+events20:16:140
273919910421040,2cyclictest26604-21kworker/3:2+events23:51:053
273769910421040,2cyclictest20918-21kworker/0:2+events19:12:560
273769910411039,2cyclictest31716-21kworker/0:1+events22:07:340
273769910411039,2cyclictest20918-21kworker/0:2+events19:33:370
273769910411039,2cyclictest12884-21kworker/0:1+events20:02:100
273889910391036,3cyclictest23171-21turbostat20:24:562
273769910391037,2cyclictest18400-21kworker/0:3+events20:06:070
273769910381036,2cyclictest31716-21kworker/0:1+events22:15:210
273889910351033,2cyclictest12363-21turbostat00:29:552
273839910341033,1cyclictest30010-21kworker/1:1+events22:41:521
273919910331031,2cyclictest29304-21kworker/3:1+events20:32:353
273769910331031,2cyclictest18400-21kworker/0:3+events20:51:500
273769910331030,3cyclictest12884-21kworker/0:1+events19:56:490
273919910261025,1cyclictest20063-21kworker/3:0+events23:38:063
273769910261023,3cyclictest9998-21turbostat21:44:550
273839910251024,1cyclictest30010-21kworker/1:1+events22:35:431
273919910231022,1cyclictest4666-21kworker/3:2+events00:21:153
273769910221019,3cyclictest22131-21turbostat22:29:560
273919910201019,1cyclictest24410-21kworker/3:2+events22:20:233
273919910171016,1cyclictest17859-21kworker/3:1+events22:58:063
273919910131010,2cyclictest12331-21kworker/3:0+events21:18:403
273839910121011,1cyclictest30010-21kworker/1:1+events22:48:281
273769910071005,2cyclictest17171-21turbostat22:24:560
273919910061004,2cyclictest14890-21kworker/3:0+events21:50:453
273919910061004,2cyclictest14890-21kworker/3:0+events21:50:443
273919910051002,3cyclictest27272-21turbostat19:14:563
27391991001999,2cyclictest29304-21kworker/3:1+events21:20:453
27376991000996,4cyclictest9249-21turbostat23:54:550
2739199995994,1cyclictest17859-21kworker/3:1+events22:27:583
2739199994993,1cyclictest24861-21kworker/3:1+events00:28:363
2739199993992,1cyclictest14890-21kworker/3:0+events21:48:253
2739199993992,1cyclictest14311-21kworker/3:2+events22:52:113
2739199993991,2cyclictest24861-21kworker/3:1+events00:18:033
2739199988987,1cyclictest12331-21kworker/3:0+events21:13:243
2739199983982,1cyclictest29304-21kworker/3:1+events19:15:443
2737699980977,3cyclictest27041-21turbostat22:34:540
2739199976974,2cyclictest2159-21turbostat20:49:553
2739199974973,1cyclictest25765-21kworker/3:2+events21:39:413
2739199974973,1cyclictest20063-21kworker/3:0+events23:05:443
2739199974973,1cyclictest12331-21kworker/3:0+events21:32:293
2739199970969,1cyclictest31960-21kworker/3:2+events20:43:303
2739199969968,1cyclictest29304-21kworker/3:1+events21:03:433
2739199969968,1cyclictest29304-21kworker/3:1+events20:55:233
2739199965964,1cyclictest23142-21kworker/3:2+events20:21:263
2739199964963,1cyclictest19118-21kworker/3:3+events00:08:483
2739199962962,0cyclictest20063-21kworker/3:0+events23:02:433
2739199962961,1cyclictest29304-21kworker/3:1+events21:07:333
2738399962960,2cyclictest12014-21turbostat23:24:551
2738399939937,2cyclictest14952-21turbostat21:49:551
2739199936934,2cyclictest4541-21turbostat22:44:553
2737699924921,3cyclictest2130-21turbostat23:14:540
2738899921917,4cyclictest24103-21turbostat00:09:552
2739199917914,2cyclictest12235-21turbostat22:19:553
2738399913911,2cyclictest21153-21turbostat20:19:551
2738399908906,2cyclictest4313-21turbostat23:49:541
2737699864861,1cyclictest9493-21turbostat22:49:550
2738899688687,1cyclictest2130-21turbostat23:14:542
2737699688685,3cyclictest19873-21turbostat21:54:560
2737699688685,3cyclictest19873-21turbostat21:54:560
2739199624621,3cyclictest21153-21turbostat20:19:553
2739199618615,3cyclictest4313-21turbostat23:49:543
2739199612610,1cyclictest4178-21turbostat20:54:553
2737699610607,3cyclictest2159-21turbostat20:49:560
2737699602599,3cyclictest31763-21turbostat23:44:550
2738899589586,3cyclictest22131-21turbostat22:29:562
2739199586583,3cyclictest21884-21turbostat23:34:553
2737699583579,4cyclictest23171-21turbostat20:24:550
2737699578576,2cyclictest12363-21turbostat00:29:550
2739199537535,2cyclictest9493-21turbostat22:49:543
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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