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2026-01-11 - 16:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, 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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Sun Jan 11, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23569211394,12sleep10-21swapper/107:05:281
24051211191,14sleep30-21swapper/307:09:273
23962210786,16sleep00-21swapper/007:08:200
2382129685,6sleep20-21swapper/207:06:292
208552800,0sleep00-21swapper/011:48:110
191132740,0sleep20-21swapper/209:20:352
288292720,0sleep00-21swapper/009:31:470
266162720,2sleep026617-21sshd10:40:440
223572710,0sleep10-21swapper/111:50:131
223572710,0sleep10-21swapper/111:50:121
307722670,0sleep10-21swapper/107:25:141
134102490,1sleep213409-21ssh12:17:232
24122993514,19cyclictest0-21swapper/108:55:111
82052260,1sleep10-21swapper/109:45:151
320132220,1sleep20-21swapper/212:39:162
2412499210,19cyclictest0-21swapper/311:55:123
24121992116,3cyclictest20493-21ssh10:35:110
2412199211,2cyclictest0-21swapper/008:00:110
2412199210,2cyclictest0-21swapper/009:00:120
24123992017,2cyclictest27802-21kworker/u8:210:12:052
24123992015,3cyclictest16773-21ssh09:55:142
2412399201,2cyclictest0-21swapper/208:00:122
2412399200,2cyclictest0-21swapper/212:30:112
2412399200,14cyclictest0-21swapper/209:00:042
2412199200,2cyclictest0-21swapper/012:30:110
185382200,0sleep10-21swapper/110:31:561
24124991916,2cyclictest23105-21kworker/u8:010:18:053
24124991915,2cyclictest26413-21ssh12:32:053
2412499191,16cyclictest16113-21ssh10:30:103
24123991916,2cyclictest541-21kworker/u8:209:38:052
24123991916,2cyclictest23454-21kworker/u8:110:48:052
24123991916,2cyclictest12621-21kworker/u8:208:50:052
24124991815,2cyclictest8064-21kworker/u8:211:39:053
2412499180,2cyclictest0-21swapper/311:06:053
24123991815,2cyclictest8064-21kworker/u8:211:49:042
24123991815,2cyclictest23454-21kworker/u8:110:57:042
24123991815,2cyclictest2305-21kworker/u8:111:28:052
24123991815,2cyclictest15243-21kworker/u8:112:22:052
24123991815,2cyclictest13949-21kworker/u8:110:29:032
2412399181,2cyclictest8214-21diskmemload11:06:052
2412399180,13cyclictest0-21swapper/211:21:052
2412399180,13cyclictest0-21swapper/208:09:052
24124991714,2cyclictest29737-21kworker/u8:212:02:043
24124991714,2cyclictest18924-21kworker/u8:210:37:043
24124991714,2cyclictest10649-21kworker/u8:009:51:053
2412499171,14cyclictest7931-21ssh10:20:173
2412499171,14cyclictest11805-21grep11:00:273
2412499170,2cyclictest0-21swapper/312:09:053
2412499170,12cyclictest0-21swapper/310:03:033
2412499170,12cyclictest0-21swapper/309:16:053
24123991714,2cyclictest8494-21kworker/u8:212:13:052
24123991714,2cyclictest23105-21kworker/u8:010:17:042
24123991714,2cyclictest21787-21kworker/u8:207:35:052
24123991714,2cyclictest15243-21kworker/u8:112:25:042
24123991714,2cyclictest13949-21kworker/u8:110:30:052
24123991714,2cyclictest13807-21kworker/u8:111:04:052
24123991714,2cyclictest12621-21kworker/u8:208:48:052
24123991714,2cyclictest12621-21kworker/u8:208:25:052
24123991714,2cyclictest12621-21kworker/u8:208:19:042
24123991714,2cyclictest10179-21kworker/u8:008:14:042
24123991714,2cyclictest10179-21kworker/u8:007:58:052
2412399171,2cyclictest0-21swapper/212:09:052
2412399170,13cyclictest0-21swapper/211:31:052
2412299177,8cyclictest0-21swapper/112:20:081
197992170,2sleep337-21rcuc/309:57:593
24124991613,2cyclictest8064-21kworker/u8:211:48:053
24124991613,2cyclictest30278-21kworker/u8:011:30:053
24124991613,2cyclictest30278-21kworker/u8:011:23:043
24124991613,2cyclictest24689-21kworker/u8:011:53:053
24124991613,2cyclictest24689-21kworker/u8:011:53:053
24124991613,2cyclictest21787-21kworker/u8:207:19:053
24124991613,2cyclictest1989-21kworker/u8:210:59:053
2412499160,2cyclictest0-21swapper/309:48:053
2412499160,2cyclictest0-21swapper/309:37:033
2412499160,11cyclictest0-21swapper/312:24:053
24123991613,2cyclictest5327-21kworker/u8:109:47:052
24123991613,2cyclictest2305-21kworker/u8:111:54:052
24123991613,2cyclictest2305-21kworker/u8:111:54:052
24123991613,2cyclictest21787-21kworker/u8:207:29:052
24123991613,2cyclictest13807-21kworker/u8:111:14:052
2412399160,3cyclictest0-21swapper/209:40:142
2412399160,2cyclictest0-21swapper/210:08:072
24122991611,3cyclictest7965-21aten2.4-expect12:10:111
2412299161,13cyclictest31452-21df12:00:141
24124991512,2cyclictest8888-21kworker/u8:210:26:043
24124991512,2cyclictest8092-21kworker/u8:207:49:053
24124991512,2cyclictest7825-21kworker/u8:007:22:043
24124991512,2cyclictest3952-21kworker/u8:007:41:053
24124991512,2cyclictest26590-21kworker/u8:009:33:053
24124991512,2cyclictest21534-21kworker/u8:212:38:053
24124991512,2cyclictest21534-21kworker/u8:212:29:043
24124991512,2cyclictest12621-21kworker/u8:209:09:043
24124991512,2cyclictest12621-21kworker/u8:208:06:053
24124991512,2cyclictest12621-21kworker/u8:208:04:053
24124991512,2cyclictest10179-21kworker/u8:007:56:053
2412499151,12cyclictest26679-21ssh11:18:133
2412499151,12cyclictest204822sleep309:22:563
2412499150,13cyclictest0-21swapper/312:13:443
24123991512,2cyclictest8064-21kworker/u8:211:36:052
24123991512,2cyclictest6267-21kworker/u8:109:12:052
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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