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2026-08-26 - 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 Wed Aug 26, 2026 12:43:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
63339910521049,3cyclictest24487-21kworker/3:2+events09:57:123
63339910521049,3cyclictest1869-21kworker/3:0+events11:11:393
63179910521049,3cyclictest16078-21kworker/0:0+events12:37:330
63179910521048,3cyclictest25965-21kworker/0:0+events09:18:040
63179910521048,3cyclictest16078-21kworker/0:0+events11:29:170
63339910511049,2cyclictest28267-21kworker/3:1+events12:09:543
63339910511049,2cyclictest21325-21kworker/3:0+events10:37:433
63339910511049,2cyclictest21325-21kworker/3:0+events09:30:223
63339910511049,2cyclictest16390-21kworker/3:0+events12:00:203
63339910511049,2cyclictest16390-21kworker/3:0+events11:56:283
63179910511049,2cyclictest22721-21kworker/0:1+events11:31:280
63179910511049,2cyclictest22206-21kworker/0:2+events11:21:370
63179910511049,2cyclictest15624-21kworker/0:1+events09:44:400
63339910501049,1cyclictest24487-21kworker/3:2+events10:03:523
63339910501049,1cyclictest24487-21kworker/3:2+events10:03:523
63339910501048,2cyclictest7494-21kworker/3:1+events11:15:443
63339910501048,2cyclictest24487-21kworker/3:2+events09:52:553
63339910501048,2cyclictest23345-21kworker/3:2+events12:13:533
63339910501048,2cyclictest21325-21kworker/3:0+events10:07:113
63339910501048,2cyclictest1990-21kworker/3:1+events10:30:453
63179910501048,2cyclictest3034-21kworker/0:2+events11:48:190
63179910501048,2cyclictest17805-21kworker/0:1+events12:34:470
63179910501045,3cyclictest16078-21kworker/0:0+events11:35:220
63339910491048,1cyclictest24487-21kworker/3:2+events10:17:233
63339910491047,2cyclictest803-21kworker/3:2+events08:28:293
63339910491047,2cyclictest23345-21kworker/3:2+events12:29:153
63339910491047,2cyclictest23345-21kworker/3:2+events12:17:133
63339910491047,2cyclictest1859-21kworker/3:1+events07:12:243
63339910491047,2cyclictest10578-21kworker/3:0+events12:23:383
63179910491047,2cyclictest3034-21kworker/0:2+events11:43:160
63179910491047,2cyclictest25965-21kworker/0:0+events09:35:200
63339910481046,2cyclictest8495-21kworker/3:2+events07:40:223
63339910481046,2cyclictest17288-21kworker/3:0+events07:37:463
63339910471045,2cyclictest803-21kworker/3:2+events08:58:403
63339910471045,2cyclictest21325-21kworker/3:0+events10:14:473
63339910461044,2cyclictest26612-21kworker/3:1+events08:15:433
63339910461044,2cyclictest15167-21kworker/3:1+events08:45:543
63339910441042,2cyclictest803-21kworker/3:2+events08:21:503
63339910421040,2cyclictest1869-21kworker/3:0+events11:08:303
63229910421040,2cyclictest27256-21kworker/1:1+events10:58:261
63339910411038,2cyclictest803-21kworker/3:2+events08:13:433
63339910361034,2cyclictest26612-21kworker/3:1+events08:04:463
63179910361033,3cyclictest11843-21turbostat11:54:550
63179910341032,2cyclictest24540-21turbostat09:49:560
63279910331030,3cyclictest10770-21kworker/2:1+events10:28:272
63179910331031,2cyclictest5657-21turbostat09:29:560
63279910281025,3cyclictest24728-21kworker/2:0+events10:21:302
63179910261024,2cyclictest12712-21turbostat07:29:540
63179910251023,2cyclictest15539-21turbostat08:54:560
63339910241023,1cyclictest803-21kworker/3:2+events08:50:233
63229910241023,1cyclictest1591-21kworker/1:2+events10:41:451
63339910221021,1cyclictest10556-21kworker/3:1+events07:26:373
63279910211019,2cyclictest5023-21turbostat08:29:552
63229910191018,1cyclictest16226-21kworker/1:0+events10:52:091
63229910111009,2cyclictest9060-21turbostat08:39:561
63279910081004,4cyclictest28710-21turbostat09:19:552
633399995994,1cyclictest11049-21kworker/3:0+events08:43:473
632299993992,1cyclictest27256-21kworker/1:1+events11:01:291
633399990987,3cyclictest7274-21turbostat11:49:553
632299989988,1cyclictest11186-21kworker/1:1+events10:45:211
632299986985,1cyclictest9305-21kworker/1:1+events09:24:531
632299979978,1cyclictest27256-21kworker/1:1+events11:54:281
631799979976,3cyclictest29429-21turbostat10:29:560
632299977976,1cyclictest1591-21kworker/1:2+events09:27:521
631799976973,3cyclictest6660-21turbostat10:39:550
633399974973,1cyclictest21325-21kworker/3:0+events09:05:223
632299973972,1cyclictest7023-21kworker/1:2+events08:34:031
633399948947,1cyclictest21325-21kworker/3:0+events09:14:133
631799945943,2cyclictest8660-21turbostat07:19:550
631799924921,3cyclictest21068-21turbostat12:04:550
631799922919,3cyclictest30722-21turbostat12:14:550
632799917914,3cyclictest28922-21turbostat08:09:552
631799910907,3cyclictest21595-21turbostat09:09:560
633399898897,1cyclictest21325-21kworker/3:0+events09:45:233
631799898896,2cyclictest29684-21turbostat11:04:550
633399895894,1cyclictest5980-21kworker/3:0+events07:15:433
631799895892,3cyclictest10595-21turbostat10:09:560
633399889888,1cyclictest26612-21kworker/3:1+events07:57:593
633399889888,1cyclictest24552-21kworker/3:0+events07:54:043
633399888887,1cyclictest8495-21kworker/3:2+events07:24:443
633399880879,1cyclictest22509-21kworker/3:2+events07:49:033
633399880879,1cyclictest10556-21kworker/3:1+events07:31:503
633399878877,1cyclictest28685-21kworker/3:0+events08:09:363
633399877876,1cyclictest21325-21kworker/3:0+events09:02:573
632299870869,1cyclictest1936-21turbostat11:09:541
631799853849,4cyclictest24039-21turbostat09:14:560
633399680676,4cyclictest29684-21turbostat11:04:543
633399674672,2cyclictest9060-21turbostat08:39:553
631799667664,3cyclictest12156-21turbostat12:29:550
632299646645,1cyclictest6660-21turbostat10:39:551
632299634633,1cyclictest7274-21turbostat11:49:551
633399616613,3cyclictest11843-21turbostat11:54:553
633399614611,3cyclictest5657-21turbostat09:29:563
633399558555,3cyclictest29429-21turbostat10:29:553
633399556554,2cyclictest19898-21turbostat09:44:563
631799530529,1cyclictest10696-21turbostat09:34:560
632799525524,1cyclictest20199-21turbostat10:19:562
632299521520,1cyclictest5023-21turbostat08:29:551
632299506505,1cyclictest28710-21turbostat09:19:551
631799488486,2cyclictest11544-21turbostat11:19:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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