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2025-12-29 - 18:38

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 29, 2025 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21819211793,19sleep00-21swapper/007:09:240
21602211796,16sleep20-21swapper/207:06:332
21638211099,6sleep30-21swapper/307:07:033
2169829982,12sleep10-21swapper/107:07:481
170012800,1sleep25841-21diskmemload11:50:182
229522780,1sleep20-21swapper/211:57:082
79272770,0sleep20-21swapper/211:40:152
200342670,0sleep10-21swapper/111:54:411
149022670,1sleep20-21swapper/210:34:152
240982610,1sleep30-21swapper/310:06:463
91412260,1sleep2301ktimersoftd/212:19:322
21895992521,3cyclictest0-21swapper/107:35:111
317372240,0sleep10-21swapper/109:39:331
317372240,0sleep10-21swapper/109:39:331
95862230,0sleep00-21swapper/009:13:520
286022230,1sleep121-21rcuc/110:12:041
2189799220,5cyclictest0-21swapper/311:23:043
2189799220,5cyclictest0-21swapper/309:05:053
2189799213,17cyclictest0-21swapper/312:34:053
2189799210,4cyclictest0-21swapper/312:01:043
2189799200,4cyclictest0-21swapper/307:13:053
21895992017,2cyclictest5181-21kworker/u8:011:07:051
21895992017,2cyclictest32263-21kworker/u8:007:44:041
21895992017,2cyclictest2660-21kworker/u8:209:48:041
21895992017,2cyclictest2660-21kworker/u8:209:44:051
21895992017,2cyclictest17844-21kworker/u8:309:27:061
198982200,1sleep10-21swapper/111:15:411
21895991916,2cyclictest5181-21kworker/u8:011:04:041
21895991916,2cyclictest3110-21kworker/u8:110:24:051
21895991916,2cyclictest30509-21kworker/u8:109:05:051
21895991916,2cyclictest30509-21kworker/u8:109:04:041
21895991916,2cyclictest23830-21kworker/u8:008:54:041
21895991916,2cyclictest23487-21kworker/u8:112:01:041
21895991916,2cyclictest17685-21kworker/u8:011:21:051
21895991916,2cyclictest15689-21kworker/u8:207:14:051
229192180,1sleep00-21swapper/012:35:140
2189799180,2cyclictest0-21swapper/309:11:043
21896991815,2cyclictest14289-21kworker/u8:110:44:052
2189699181,12cyclictest0-21swapper/209:13:042
21895991815,2cyclictest3754-21kworker/u8:208:13:041
21895991815,2cyclictest28141-21kworker/u8:108:20:051
21895991815,2cyclictest20379-21kworker/u8:108:44:041
21895991714,2cyclictest3754-21kworker/u8:207:51:041
21895991714,2cyclictest28141-21kworker/u8:108:19:041
21895991714,2cyclictest28141-21kworker/u8:107:26:051
21895991714,2cyclictest14683-21kworker/u8:212:34:041
2189799162,12cyclictest7458-21runrttasks11:55:273
2189799161,3cyclictest22512-21runrttasks12:35:013
2189799161,13cyclictest16978-21ssh09:59:463
21896991613,2cyclictest14289-21kworker/u8:110:59:052
2189599160,14cyclictest0-21swapper/110:57:331
21894991612,2cyclictest0-21swapper/008:45:160
235992150,2sleep00-21swapper/010:44:110
2189799151,3cyclictest3118-21munin-node3
2189799151,12cyclictest20061-21ssh11:54:443
21897991511,2cyclictest0-21swapper/311:00:283
2189799150,14cyclictest0-21swapper/311:48:253
2189799150,14cyclictest0-21swapper/310:30:203
2189799150,13cyclictest5841-21diskmemload10:13:393
2189799150,13cyclictest29911-21python10:50:223
2189799150,13cyclictest0-21swapper/309:40:153
21896991512,2cyclictest31486-21kworker/u8:109:40:052
21896991512,2cyclictest17844-21kworker/u8:309:26:042
21896991512,2cyclictest17653-21kworker/u8:110:06:052
21896991512,2cyclictest13022-21kworker/u8:111:11:032
21895991512,2cyclictest30509-21kworker/u8:109:11:051
21895991510,3cyclictest5841-21diskmemload11:30:001
2189599150,2cyclictest0-21swapper/110:05:121
2189499150,13cyclictest0-21swapper/011:00:250
2189499150,13cyclictest0-21swapper/010:56:160
2189499150,13cyclictest0-21swapper/008:10:170
19472150,1sleep35841-21diskmemload10:55:283
2189799149,3cyclictest25258-21ssh10:45:163
21897991411,2cyclictest0-21swapper/312:16:483
21897991411,2cyclictest0-21swapper/309:46:273
21897991411,2cyclictest0-21swapper/308:35:183
2189799141,11cyclictest15629-21ssh11:10:493
2189799140,2cyclictest39-21ksoftirqd/312:08:243
2189799140,2cyclictest0-21swapper/310:35:113
2189799140,2cyclictest0-21swapper/309:17:403
2189799140,13cyclictest0-21swapper/311:17:003
2189799140,13cyclictest0-21swapper/309:50:123
2189799140,13cyclictest0-21swapper/309:50:113
2189799140,12cyclictest0-21swapper/312:10:393
2189799140,12cyclictest0-21swapper/310:25:233
2189799140,12cyclictest0-21swapper/309:30:253
2189699149,3cyclictest0-21swapper/207:45:002
2189699141,2cyclictest5841-21diskmemload10:47:482
21896991411,2cyclictest27834-21kworker/u8:210:20:042
21896991411,2cyclictest2660-21kworker/u8:209:31:042
21896991411,2cyclictest21827-21kworker/u8:012:35:042
2189699140,2cyclictest0-21swapper/210:36:042
2189699140,2cyclictest0-21swapper/210:18:052
2189699140,2cyclictest0-21swapper/209:50:122
2189699140,2cyclictest0-21swapper/209:50:112
21895991411,2cyclictest5841-21diskmemload12:05:301
21895991411,2cyclictest0-21swapper/111:11:231
2189599140,12cyclictest8820-21sensors11:40:261
2189599140,12cyclictest19061-21ssh10:38:511
2189599140,12cyclictest0-21swapper/111:46:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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