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2026-09-23 - 04:33

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 Wed Sep 23, 2026 00:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
141909910521049,3cyclictest20266-21turbostat00:19:553
141769910521049,3cyclictest7711-21kworker/0:1+events23:30:440
141769910521049,3cyclictest21369-21kworker/0:1+events22:16:070
141769910521049,3cyclictest18958-21kworker/0:2+events23:10:210
141769910521048,3cyclictest18958-21kworker/0:2+events22:14:530
141769910511049,2cyclictest809-21kworker/0:2+events23:22:340
141769910511049,2cyclictest7711-21kworker/0:1+events23:39:450
141769910511049,2cyclictest7711-21kworker/0:1+events23:29:480
141769910511049,2cyclictest4227-21kworker/0:0+events19:35:230
141769910511049,2cyclictest19833-21kworker/0:2+events19:27:110
141769910511049,2cyclictest18958-21kworker/0:2+events22:06:050
141769910511049,2cyclictest16293-21kworker/0:1+events23:09:010
141769910511049,2cyclictest14346-21kworker/0:2+events19:15:210
141769910511049,2cyclictest13537-21kworker/0:2+events23:41:050
141769910511048,3cyclictest15526-21kworker/0:0+events20:32:520
141769910501048,2cyclictest4227-21kworker/0:0+events19:32:030
141769910501048,2cyclictest4227-21kworker/0:0+events19:21:380
141769910501048,2cyclictest24359-21kworker/0:1+events20:38:240
141769910501048,2cyclictest18958-21kworker/0:2+events21:26:360
141769910501048,2cyclictest16293-21kworker/0:1+events23:17:430
141769910501046,4cyclictest4227-21kworker/0:0+events19:11:520
141769910491046,3cyclictest13537-21kworker/0:2+events00:20:200
141869910471046,1cyclictest30098-21kworker/2:1+events00:27:572
141909910411040,1cyclictest11068-21kworker/3:0+events22:04:193
141819910401038,2cyclictest30852-21turbostat22:19:561
141869910361033,3cyclictest7626-21turbostat00:39:542
141909910281026,2cyclictest26624-21kworker/3:1+events22:45:413
141909910281025,3cyclictest25213-21turbostat00:24:553
141909910271025,2cyclictest7833-21kworker/3:2+events00:02:113
141909910271025,2cyclictest7833-21kworker/3:2+events00:02:113
141909910271025,2cyclictest18251-21kworker/3:0+events00:33:513
141819910261024,2cyclictest22244-21kworker/1:0+events21:34:361
141909910251023,2cyclictest11068-21kworker/3:0+events22:36:153
141909910251022,3cyclictest29523-21kworker/3:1+events21:40:433
141909910231021,2cyclictest3335-21kworker/3:2+events22:25:233
141909910231021,2cyclictest31077-21kworker/3:0+events21:19:413
141909910221020,2cyclictest18251-21kworker/3:0+events00:35:443
141909910221020,2cyclictest15080-21kworker/3:0+events23:52:073
141909910221020,2cyclictest15080-21kworker/3:0+events23:49:103
141909910211019,2cyclictest7364-21kworker/3:1+events19:41:063
141909910211019,2cyclictest30731-21kworker/3:0+events20:10:533
141909910201018,2cyclictest3335-21kworker/3:2+events22:24:253
141909910201018,2cyclictest25357-21kworker/3:2+events20:55:443
141909910191017,2cyclictest4414-21kworker/3:3+events20:04:543
141909910191017,2cyclictest29523-21kworker/3:1+events21:53:293
141909910191017,2cyclictest12038-21kworker/3:2+events21:47:403
141909910191017,2cyclictest11068-21kworker/3:0+events21:59:243
141909910191016,2cyclictest15080-21kworker/3:0+events23:04:163
141909910181016,2cyclictest3335-21kworker/3:2+events22:44:163
141909910181016,2cyclictest30731-21kworker/3:0+events19:50:223
141909910171015,2cyclictest10629-21kworker/3:2+events20:29:323
141909910171014,3cyclictest8939-21turbostat21:24:553
141909910161014,2cyclictest4542-21kworker/3:1+events22:58:273
141819910161011,4cyclictest6204-21turbostat21:54:551
141909910151013,2cyclictest31077-21kworker/3:0+events21:13:453
141909910141012,2cyclictest30731-21kworker/3:0+events19:56:263
141909910091007,2cyclictest6433-21kworker/3:1+events20:08:593
141909910091007,2cyclictest3335-21kworker/3:2+events22:31:473
141909910091007,2cyclictest31693-21kworker/3:0+events22:52:573
141909910091007,2cyclictest14744-21kworker/3:1+events21:03:373
141909910081006,2cyclictest30731-21kworker/3:0+events19:48:253
141909910071005,2cyclictest2509-21kworker/3:1+events23:58:513
141909910061004,2cyclictest7833-21kworker/3:2+events00:11:063
141909910051003,2cyclictest2509-21kworker/3:1+events00:08:383
141909910051003,2cyclictest10629-21kworker/3:2+events20:19:523
141819910051004,1cyclictest23769-21turbostat21:39:551
141909910041002,2cyclictest14744-21kworker/3:1+events21:08:403
141909910041001,3cyclictest19295-21kworker/3:0+events20:41:273
141909910031001,2cyclictest30731-21kworker/3:0+events20:24:413
1419099991989,2cyclictest22189-21turbostat19:34:563
1418199991987,4cyclictest19323-21turbostat20:44:551
1417699987985,2cyclictest25380-21turbostat20:59:550
1418699984983,1cyclictest9243-21kworker/2:0+events20:50:442
1417699983981,2cyclictest10810-21turbostat20:24:550
1418699981980,1cyclictest21585-21kworker/2:2+events20:45:442
1419099968965,3cyclictest14872-21turbostat20:34:553
1418699966963,3cyclictest13905-21turbostat21:29:552
1418199963960,3cyclictest30164-21turbostat00:29:551
1417699945943,2cyclictest18816-21turbostat21:34:550
1419099924922,2cyclictest20849-21turbostat23:14:553
1418699921920,1cyclictest17306-21turbostat20:39:552
1417699920918,2cyclictest2697-21turbostat00:34:560
1417699919915,4cyclictest10980-21turbostat23:04:550
1418199902899,3cyclictest23360-21turbostat20:54:541
1418699880878,2cyclictest23578-21turbostat22:44:552
1418699854852,2cyclictest27386-21turbostat21:04:552
1419099687684,3cyclictest23360-21turbostat20:54:553
1417699655651,4cyclictest20266-21turbostat00:19:550
1419099627624,3cyclictest24624-21turbostat19:39:563
1419099626623,3cyclictest30852-21turbostat22:19:553
1417699620617,3cyclictest8939-21turbostat21:24:550
1417699609606,3cyclictest12844-21turbostat20:29:550
1417699602599,3cyclictest16075-21turbostat22:04:560
1419099591588,3cyclictest23769-21turbostat21:39:553
1418699552551,1cyclictest25213-21turbostat00:24:552
1419099547544,3cyclictest30164-21turbostat00:29:553
1418699545543,2cyclictest19323-21turbostat20:44:552
1419099542539,3cyclictest18113-21turbostat23:44:553
1418199518516,2cyclictest13905-21turbostat21:29:561
1419099506503,3cyclictest17306-21turbostat20:39:553
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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