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2026-07-14 - 23:48

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 Tue Jul 14, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23798211998,15sleep30-21swapper/307:09:593
23707211895,18sleep00-21swapper/007:08:470
23609210686,15sleep10-21swapper/107:07:321
23610210587,13sleep20-21swapper/207:07:332
166402790,0sleep0101ktimersoftd/008:10:170
127492710,0sleep30-21swapper/310:54:233
222242680,0sleep00-21swapper/009:57:080
23827993829,2cyclictest0-21swapper/007:30:100
2383099370,35cyclictest0-21swapper/311:35:133
2382899260,24cyclictest0-21swapper/111:35:131
122802220,1sleep312282-21ssh12:34:553
23830991916,2cyclictest29637-21kworker/u8:009:40:013
23830991916,2cyclictest20849-21kworker/u8:011:30:063
23830991916,2cyclictest15395-21kworker/u8:109:18:043
23829991916,2cyclictest3698-21kworker/u8:211:09:052
23829991916,2cyclictest3698-21kworker/u8:210:52:052
2382999191,16cyclictest0-21swapper/209:15:102
2382999190,17cyclictest0-21swapper/210:10:112
23829991815,2cyclictest15880-21kworker/u8:212:38:052
2382899180,15cyclictest0-21swapper/111:00:121
2382799180,16cyclictest0-21swapper/009:15:110
23830991714,2cyclictest29984-21kworker/u8:210:08:053
23830991714,2cyclictest22618-21kworker/u8:209:45:053
23830991714,2cyclictest12297-21kworker/u8:009:52:043
23829991714,2cyclictest3698-21kworker/u8:210:48:042
23829991714,2cyclictest29984-21kworker/u8:210:07:042
23829991714,2cyclictest25755-21kworker/u8:107:27:052
23829991714,2cyclictest24901-21kworker/u8:112:15:042
23829991714,2cyclictest14732-21kworker/u8:312:05:042
23829991714,2cyclictest12297-21kworker/u8:009:51:052
2382999170,16cyclictest0-21swapper/212:22:052
2382999170,13cyclictest0-21swapper/211:21:052
2382999170,12cyclictest0-21swapper/210:42:062
2382799171,3cyclictest0-21swapper/010:27:000
23830991613,2cyclictest3698-21kworker/u8:210:49:053
23830991613,2cyclictest23964-21kworker/u8:108:46:053
23830991613,2cyclictest13446-21kworker/u8:111:01:053
23830991613,2cyclictest12076-21kworker/u8:111:41:043
23830991613,2cyclictest12076-21kworker/u8:111:27:043
2383099160,14cyclictest26247-21df_abs08:35:123
2383099160,11cyclictest0-21swapper/312:19:043
23829991613,2cyclictest4276-21kworker/u8:009:02:022
23829991613,2cyclictest29984-21kworker/u8:210:21:052
23829991613,2cyclictest27948-21kworker/u8:111:16:052
23829991613,2cyclictest27948-21kworker/u8:111:16:042
23829991613,2cyclictest25755-21kworker/u8:107:18:042
23829991613,2cyclictest24176-21kworker/u8:211:45:052
23829991613,2cyclictest23964-21kworker/u8:108:57:052
23829991613,2cyclictest22618-21kworker/u8:209:28:062
23829991613,2cyclictest14732-21kworker/u8:312:12:052
2382999160,2cyclictest0-21swapper/211:28:052
2382999160,2cyclictest0-21swapper/209:14:052
2382999160,12cyclictest0-21swapper/208:27:042
2382799161,13cyclictest22803-21tr09:25:150
23827991611,3cyclictest0-21swapper/009:45:200
23830991512,2cyclictest29637-21kworker/u8:009:32:023
23830991512,2cyclictest27948-21kworker/u8:111:14:023
23830991512,2cyclictest20849-21kworker/u8:011:17:053
23830991512,2cyclictest20849-21kworker/u8:011:17:043
23830991512,2cyclictest17880-21kworker/u8:208:20:053
23830991512,2cyclictest14732-21kworker/u8:312:13:053
23830991510,3cyclictest0-21swapper/308:50:043
23829991512,2cyclictest8151-21kworker/u8:108:04:042
23829991512,2cyclictest8151-21kworker/u8:107:57:052
23829991512,2cyclictest28241-21kworker/u8:007:36:022
23829991512,2cyclictest28241-21kworker/u8:007:32:042
23829991512,2cyclictest24176-21kworker/u8:211:52:042
23829991512,2cyclictest22618-21kworker/u8:209:30:042
23829991512,2cyclictest20849-21kworker/u8:011:30:022
23829991512,2cyclictest17880-21kworker/u8:208:54:042
23829991512,2cyclictest17880-21kworker/u8:208:22:052
23829991512,2cyclictest17745-21kworker/u8:207:11:052
23829991512,2cyclictest1588-21kworker/u8:212:28:052
23829991512,2cyclictest12297-21kworker/u8:009:47:052
2382999150,13cyclictest0-21swapper/208:15:122
2382999150,11cyclictest0-21swapper/207:46:052
2382799152,7cyclictest0-21swapper/009:05:000
2382799151,3cyclictest18181-21perl09:20:130
2382799151,12cyclictest24578-21aten2.4_r3power10:00:130
2382799151,12cyclictest11214-21ssh09:13:120
2382799151,12cyclictest10847-21apt-get12:00:060
23827991510,3cyclictest6640-21ssh11:20:510
2382799150,3cyclictest0-21swapper/011:27:590
2382799150,3cyclictest0-21swapper/008:21:020
2383099149,3cyclictest7927-21ssh11:22:143
23830991411,2cyclictest6692-21kworker/u8:010:34:043
23830991411,2cyclictest6315-21kworker/u8:110:15:043
23830991411,2cyclictest22618-21kworker/u8:209:36:053
23830991411,2cyclictest15395-21kworker/u8:109:20:053
23830991411,2cyclictest0-21swapper/310:42:013
23830991411,2cyclictest0-21swapper/307:35:123
2383099140,9cyclictest0-21swapper/308:58:053
2383099140,2cyclictest0-21swapper/310:03:123
2383099140,2cyclictest0-21swapper/309:14:053
2383099140,12cyclictest12647-21apt-get12:35:113
23829991411,2cyclictest8151-21kworker/u8:108:09:052
23829991411,2cyclictest7531-21diskmemload10:19:032
23829991411,2cyclictest7219-21kworker/u8:109:07:042
23829991411,2cyclictest23964-21kworker/u8:108:45:052
23829991411,2cyclictest23964-21kworker/u8:108:44:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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