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2025-12-23 - 00:53

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 Mon Dec 22, 2025 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19160211695,16sleep20-21swapper/207:09:212
18921210679,22sleep00-21swapper/007:06:150
19174210089,6sleep10-21swapper/107:09:321
1914629584,6sleep30-21swapper/307:09:103
4392920,1sleep2443-21timerwakeupswit07:40:252
213432670,0sleep30-21swapper/309:30:133
97942270,5sleep21923899cyclictest12:25:012
84822250,1sleep13179-21diskmemload11:05:281
84822250,1sleep13179-21diskmemload11:05:271
1923799250,23cyclictest0-21swapper/107:10:141
151932250,1sleep30-21swapper/311:14:563
151932250,1sleep30-21swapper/311:14:553
133152250,1sleep10-21swapper/109:57:461
1923699240,22cyclictest0-21swapper/010:00:120
1923899232,19cyclictest5439-21ssh12:20:112
9552220,2sleep0939-21ssh10:20:210
1923899220,20cyclictest0-21swapper/210:00:122
1923899211,18cyclictest0-21swapper/208:45:112
1923899210,19cyclictest0-21swapper/209:15:122
1923699211,2cyclictest3179-21diskmemload10:15:110
108032210,1sleep00-21swapper/011:45:560
81952200,0sleep00-21swapper/011:05:270
81952200,0sleep00-21swapper/011:05:270
107982200,4sleep0101ktimersoftd/010:31:200
79422180,0sleep00-21swapper/009:50:500
19239991815,2cyclictest24787-21kworker/u8:010:52:053
19239991815,2cyclictest1782-21kworker/u8:209:54:053
19238991815,2cyclictest14931-21kworker/u8:110:20:042
19238991815,2cyclictest14931-21kworker/u8:110:17:052
19238991815,2cyclictest12396-21kworker/u8:110:41:052
1923899181,2cyclictest0-21swapper/209:40:052
1923699180,16cyclictest0-21swapper/009:15:120
19239991714,2cyclictest24008-21kworker/u8:109:48:043
19238991714,2cyclictest9562-21kworker/u8:012:38:052
1923799172,13cyclictest7458-21runrttasks12:20:151
19237991714,2cyclictest0-21swapper/110:30:061
1923799171,14cyclictest0-21swapper/109:35:181
162822170,0sleep00-21swapper/009:24:540
19239991613,2cyclictest9562-21kworker/u8:012:27:033
19239991613,2cyclictest9127-21kworker/u8:010:10:043
19239991613,2cyclictest6450-21kworker/u8:111:45:053
19239991613,2cyclictest4886-21kworker/u8:112:32:043
19239991613,2cyclictest4886-21kworker/u8:112:24:053
19239991613,2cyclictest32168-21kworker/u8:012:17:033
19239991613,2cyclictest28084-21kworker/u8:210:21:043
19239991613,2cyclictest24787-21kworker/u8:010:48:043
19239991613,2cyclictest24008-21kworker/u8:109:37:033
19239991613,2cyclictest14931-21kworker/u8:110:18:053
19239991613,2cyclictest14328-21kworker/u8:211:51:043
19239991613,2cyclictest11204-21kworker/u8:008:16:053
19238991613,2cyclictest29806-21kworker/u8:210:56:052
19238991613,2cyclictest29008-21kworker/u8:108:24:042
19238991613,2cyclictest1782-21kworker/u8:209:55:032
19238991613,2cyclictest12396-21kworker/u8:110:36:042
19238991613,2cyclictest11204-21kworker/u8:008:41:042
1923899161,13cyclictest4907-21ssh11:02:052
1923899161,13cyclictest0-21swapper/209:10:122
1923899160,14cyclictest21672-21egrep07:15:152
1923899160,12cyclictest0-21swapper/211:57:042
1923799163,12cyclictest0-21swapper/110:07:451
1923799162,12cyclictest0-21swapper/109:30:301
19237991612,2cyclictest3179-21diskmemload12:25:071
1923799161,13cyclictest24261-21hddtemp_smartct10:10:141
19237991611,3cyclictest0-21swapper/110:00:151
1923799161,13cyclictest0-21swapper/109:50:161
224172150,2sleep00-21swapper/011:22:240
19239991512,2cyclictest25982-21kworker/u8:111:30:053
19239991512,2cyclictest14931-21kworker/u8:110:05:053
19239991512,2cyclictest12396-21kworker/u8:110:44:053
19239991512,2cyclictest11944-21kworker/u8:012:02:043
1923999150,2cyclictest0-21swapper/309:40:053
1923899150,2cyclictest0-21swapper/211:26:042
1923899150,13cyclictest3179-21diskmemload11:05:062
1923899150,13cyclictest3179-21diskmemload11:05:052
1923899150,13cyclictest1671-21smartctl12:15:152
1923899150,13cyclictest0-21swapper/210:54:052
1923799154,3cyclictest7458-21runrttasks07:45:181
1923799154,3cyclictest7458-21runrttasks07:45:181
1923799153,4cyclictest0-21swapper/109:28:511
1923799153,10cyclictest27532-21munin-node1
1923799153,10cyclictest1352-21cut09:04:591
1923799153,10cyclictest0-21swapper/110:40:191
1923799152,2cyclictest0-21swapper/112:00:251
1923799152,11cyclictest0-21swapper/112:13:471
1923799152,11cyclictest0-21swapper/111:20:181
1923799152,11cyclictest0-21swapper/110:55:211
1923799152,11cyclictest0-21swapper/109:40:221
19237991512,2cyclictest3179-21diskmemload10:37:151
19237991512,2cyclictest0-21swapper/110:54:001
19237991512,2cyclictest0-21swapper/110:19:051
19237991511,3cyclictest3179-21diskmemload09:15:271
1923799150,14cyclictest0-21swapper/111:45:221
1923799150,14cyclictest0-21swapper/111:40:241
1923799150,13cyclictest3179-21diskmemload11:32:221
1923699150,13cyclictest0-21swapper/011:55:120
19239991411,2cyclictest5754-21kworker/u8:209:20:043
19239991411,2cyclictest25982-21kworker/u8:111:35:033
19239991411,2cyclictest2528-21kworker/u8:011:18:043
19239991411,2cyclictest25173-21kworker/u8:207:35:053
19239991411,2cyclictest21625-21kworker/u8:007:27:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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