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2026-07-21 - 14:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot3s.osadl.org (updated Tue Jul 21, 2026 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
132792228158,57sleep30-21swapper/307:07:053
127352223192,21sleep20-21swapper/207:05:262
134612203164,26sleep10-21swapper/107:09:231
133032203164,26sleep00-21swapper/007:07:210
2141921530,4sleep21360899cyclictest11:05:182
136089910399,3cyclictest0-21swapper/211:38:212
13608999288,3cyclictest0-21swapper/211:56:302
13608995750,5cyclictest0-21swapper/208:15:002
72532500,2sleep10-21swapper/109:20:131
184882490,2sleep00-21swapper/009:45:170
13608994137,3cyclictest0-21swapper/208:55:222
1360899390,29cyclictest0-21swapper/212:26:092
13608993725,3cyclictest0-21swapper/210:01:292
13608993723,3cyclictest0-21swapper/210:57:582
1360899361,20cyclictest0-21swapper/208:02:532
1360899361,15cyclictest0-21swapper/209:19:092
13608993525,3cyclictest0-21swapper/209:57:292
1360899351,23cyclictest0-21swapper/208:33:332
1360899351,21cyclictest0-21swapper/211:53:412
1360899341,14cyclictest0-21swapper/207:13:532
1360899331,22cyclictest0-21swapper/209:28:012
1360899331,13cyclictest0-21swapper/210:16:372
1360899330,16cyclictest0-21swapper/211:18:022
1360299331,23cyclictest0-21swapper/108:58:231
1360299331,19cyclictest0-21swapper/108:08:111
1359799337,12cyclictest4520-21perf09:15:010
1359799337,12cyclictest4520-21perf09:15:010
1359799333,14cyclictest20522-21munin-run11:05:010
251032320,2sleep30-21swapper/311:15:013
13608993221,3cyclictest0-21swapper/211:43:372
1360899321,19cyclictest0-21swapper/209:30:292
1360899321,16cyclictest0-21swapper/212:39:532
1360899321,13cyclictest0-21swapper/211:23:292
1360899320,19cyclictest0-21swapper/211:34:292
1360299321,24cyclictest0-21swapper/107:29:111
1360299320,12cyclictest0-21swapper/108:50:071
13608993116,4cyclictest9156-21taskset10:35:372
1360899311,3cyclictest0-21swapper/212:09:092
1360899311,20cyclictest0-21swapper/208:22:412
1360899311,19cyclictest0-21swapper/210:33:332
1360899311,14cyclictest0-21swapper/210:25:092
1360899311,14cyclictest0-21swapper/209:39:292
1360899311,13cyclictest0-21swapper/207:50:572
1360899311,12cyclictest0-21swapper/211:00:262
1360899311,12cyclictest0-21swapper/208:07:492
1359799313,13cyclictest24911-21munin-run11:15:000
1360899309,13cyclictest0-21swapper/211:27:492
1360899301,16cyclictest0-21swapper/209:41:252
1360899301,14cyclictest0-21swapper/211:48:132
1360899301,14cyclictest0-21swapper/210:47:182
1360899301,14cyclictest0-21swapper/209:01:302
1360899301,14cyclictest0-21swapper/208:49:502
1360899301,13cyclictest0-21swapper/212:21:332
1360899301,13cyclictest0-21swapper/208:51:342
1360899301,11cyclictest7606-21smartctl09:20:172
1360899300,18cyclictest0-21swapper/210:52:342
1360299300,23cyclictest0-21swapper/108:00:311
1360299300,11cyclictest0-21swapper/110:00:271
1360899291,20cyclictest0-21swapper/210:42:372
1360899291,19cyclictest0-21swapper/210:24:092
1360899291,19cyclictest0-21swapper/210:24:092
1360899291,18cyclictest0-21swapper/207:33:572
1360899291,13cyclictest0-21swapper/207:19:572
1360899291,12cyclictest0-21swapper/211:13:462
1360899291,12cyclictest0-21swapper/210:10:172
1360899291,12cyclictest0-21swapper/208:37:572
1360899291,12cyclictest0-21swapper/207:28:502
1360299299,7cyclictest0-21swapper/107:20:111
1360299290,6cyclictest0-21swapper/111:17:551
1360299290,13cyclictest0-21swapper/110:40:241
1360299290,11cyclictest0-21swapper/110:32:161
13597992910,16cyclictest13912-21munin-run10:50:010
78362280,3sleep31361499cyclictest09:20:203
201022280,4sleep230-21rcuc/207:20:242
13608992815,7cyclictest0-21swapper/212:32:492
1360899281,19cyclictest0-21swapper/207:59:412
1360899281,14cyclictest0-21swapper/209:52:532
1360899281,13cyclictest0-21swapper/209:14:102
1360899281,13cyclictest0-21swapper/209:14:102
1360899281,12cyclictest12816-21cstates12:00:132
1360899281,12cyclictest0-21swapper/212:15:372
1360899281,12cyclictest0-21swapper/212:13:452
1360899281,11cyclictest0-21swapper/207:47:252
1360299281,12cyclictest0-21swapper/112:27:511
1360299281,11cyclictest0-21swapper/111:48:351
1360299281,11cyclictest0-21swapper/107:31:031
1360299281,10cyclictest986-21hddtemp_smartct09:05:151
1360299280,17cyclictest0-21swapper/110:39:361
1360299280,10cyclictest23-21ksoftirqd/112:06:011
1359799281,14cyclictest23681-21basename08:45:010
13608992715,3cyclictest0-21swapper/208:40:382
1360899271,12cyclictest0-21swapper/209:45:052
1360899271,11cyclictest0-21swapper/210:06:492
1360299271,9cyclictest0-21swapper/111:44:111
1360299271,9cyclictest0-21swapper/111:01:391
1360299271,16cyclictest0-21swapper/112:16:071
1360299271,12cyclictest0-21swapper/108:17:561
1360299271,11cyclictest0-21swapper/109:58:551
1360299271,11cyclictest0-21swapper/109:36:551
1360299271,10cyclictest0-21swapper/111:54:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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