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2025-12-21 - 18:34

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 Dec 21, 2025 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22937212094,19sleep00-21swapper/007:05:180
23990211694,16sleep30-21swapper/307:09:223
23945211395,12sleep20-21swapper/207:08:492
23723211396,12sleep10-21swapper/107:05:551
209812860,0sleep00-21swapper/011:50:150
180832780,1sleep10-21swapper/112:23:511
143312730,1sleep00-21swapper/009:52:500
285302290,0sleep00-21swapper/009:32:140
261222270,1sleep00-21swapper/011:20:010
241102230,0sleep00-21swapper/009:27:130
253312220,1sleep20-21swapper/210:05:192
24068992218,2cyclictest0-21swapper/211:20:122
2406899212,14cyclictest0-21swapper/210:51:052
2406899212,14cyclictest0-21swapper/210:51:052
24066992117,2cyclictest0-21swapper/010:40:130
229142210,1sleep10-21swapper/112:29:401
318172200,0sleep30-21swapper/310:12:533
2406899200,18cyclictest0-21swapper/212:30:122
2406899190,14cyclictest0-21swapper/209:45:052
24067991815,2cyclictest8785-21kworker/u8:011:03:041
24067991815,2cyclictest20144-21kworker/u8:010:20:051
2406999171,3cyclictest0-21swapper/308:50:113
2406899171,14cyclictest20564-21aten2.4_r3power08:20:132
2406899170,12cyclictest0-21swapper/212:10:052
2406899170,12cyclictest0-21swapper/211:39:042
24067991714,2cyclictest6165-21kworker/u8:209:30:051
24067991714,2cyclictest32593-21kworker/u8:009:18:051
24067991714,2cyclictest2781-21kworker/u8:111:31:051
24067991714,2cyclictest11770-21kworker/u8:011:49:041
2406799171,2cyclictest328750irq/24-eth109:39:041
2406799170,12cyclictest0-21swapper/112:13:051
2406799170,12cyclictest0-21swapper/111:09:041
2406799170,12cyclictest0-21swapper/109:27:041
24069991611,3cyclictest8122-21diskmemload11:52:523
2406999161,13cyclictest22106-21aten2.4-expect11:15:123
24068991613,2cyclictest30472-21kworker/u8:009:41:042
24068991613,2cyclictest22549-21kworker/u8:012:38:052
24068991611,3cyclictest0-21swapper/211:49:272
2406899160,2cyclictest0-21swapper/212:15:052
2406899160,2cyclictest0-21swapper/209:39:042
2406899160,11cyclictest0-21swapper/210:32:052
24067991613,2cyclictest26363-21kworker/u8:110:25:051
24067991613,2cyclictest20144-21kworker/u8:010:03:051
2406799161,2cyclictest0-21swapper/112:15:051
2406699160,14cyclictest0-21swapper/011:33:580
24069991512,2cyclictest0-21swapper/312:20:223
24069991512,2cyclictest0-21swapper/311:10:223
2406999150,2cyclictest0-21swapper/311:01:323
2406999150,13cyclictest27682-21ssh12:35:023
2406999150,13cyclictest0-21swapper/308:55:123
2406899152,7cyclictest0-21swapper/209:20:002
24068991512,2cyclictest0-21swapper/212:08:042
2406899150,13cyclictest0-21swapper/210:04:052
24067991512,2cyclictest5983-21kworker/u8:109:59:051
24067991512,2cyclictest29238-21kworker/u8:012:05:041
24067991512,2cyclictest26363-21kworker/u8:110:06:051
24067991512,2cyclictest2618-21kworker/u8:311:40:051
24067991512,2cyclictest22549-21kworker/u8:012:36:051
24067991512,2cyclictest11770-21kworker/u8:011:53:051
2406799151,12cyclictest28086-21apt-get07:20:051
2406799150,3cyclictest26576-21cut11:20:131
2406799150,13cyclictest8122-21diskmemload10:59:361
2406799150,13cyclictest19485-21sed10:35:151
24066991512,2cyclictest0-21swapper/011:58:580
2406699150,13cyclictest0-21swapper/010:15:390
2406999142,7cyclictest0-21swapper/311:30:013
24069991411,2cyclictest28160-21ssh11:20:523
24069991411,2cyclictest0-21swapper/310:59:523
24069991411,2cyclictest0-21swapper/310:40:423
24069991411,2cyclictest0-21swapper/310:02:123
24069991411,2cyclictest0-21swapper/309:58:523
24069991411,2cyclictest0-21swapper/309:40:323
2406999140,3cyclictest27468-21munin-run12:35:003
2406999140,2cyclictest0-21swapper/311:39:223
2406999140,13cyclictest0-21swapper/312:04:423
2406999140,12cyclictest8122-21diskmemload12:09:333
2406999140,12cyclictest0-21swapper/309:35:003
2406899149,3cyclictest21026-21hddtemp_smartct11:50:152
2406899142,7cyclictest0-21swapper/208:35:012
2406899142,6cyclictest0-21swapper/211:30:012
2406899142,6cyclictest0-21swapper/209:05:012
2406899142,6cyclictest0-21swapper/208:55:012
2406899142,6cyclictest0-21swapper/208:50:012
24068991411,2cyclictest5983-21kworker/u8:109:51:052
24068991411,2cyclictest24270-21kworker/u8:207:20:052
24068991411,2cyclictest0-21swapper/210:14:032
2406899140,3cyclictest31355-21ssh10:49:172
2406899140,2cyclictest0-21swapper/212:29:152
2406899140,2cyclictest0-21swapper/211:55:052
2406899140,12cyclictest0-21swapper/212:20:152
2406899140,12cyclictest0-21swapper/211:33:382
2406899140,12cyclictest0-21swapper/211:10:272
2406899140,12cyclictest0-21swapper/210:15:582
2406899140,12cyclictest0-21swapper/209:56:472
2406899140,12cyclictest0-21swapper/209:34:352
2406899140,12cyclictest0-21swapper/209:13:072
2406799143,9cyclictest6226-21gdm311:55:041
24067991411,2cyclictest6165-21kworker/u8:209:47:041
24067991411,2cyclictest5983-21kworker/u8:109:52:051
24067991411,2cyclictest32593-21kworker/u8:008:57:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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