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2026-04-18 - 20:56

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 Sat Apr 18, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
243862237161,24sleep30-21swapper/307:09:133
242712236162,24sleep20-21swapper/207:07:432
2363122230,2sleep1221ktimersoftd/107:05:231
243112200162,26sleep00-21swapper/007:08:130
1047521670,5sleep02453699cyclictest10:15:170
2198521330,2sleep081ktimersoftd/008:15:140
332921280,4sleep02453699cyclictest10:00:120
579021220,1sleep10-21swapper/107:37:081
24549998380,2cyclictest0-21swapper/208:31:052
27652520,2sleep00-21swapper/007:30:190
24549995149,1cyclictest0-21swapper/209:35:262
24549994744,2cyclictest0-21swapper/210:46:152
26382460,1sleep20-21swapper/211:10:212
295972440,1sleep20-21swapper/209:45:272
2454299431,29cyclictest0-21swapper/110:03:011
216972420,2sleep10-21swapper/110:40:181
2454299362,13cyclictest0-21swapper/110:14:011
2454299362,13cyclictest0-21swapper/110:14:011
24536993621,2cyclictest32474-21kworker/0:111:23:440
24536993610,12cyclictest29256-21perf11:00:010
2454999330,12cyclictest0-21swapper/209:16:352
2454299331,8cyclictest0-21swapper/108:41:151
2454299331,27cyclictest0-21swapper/110:56:211
24536993323,2cyclictest8038-21kworker/0:007:52:290
2454299321,13cyclictest18837-21/usr/sbin/munin10:35:151
2454999311,23cyclictest0-21swapper/211:59:392
2454999311,22cyclictest0-21swapper/210:58:572
2454999310,23cyclictest0-21swapper/211:08:532
2454299311,14cyclictest0-21swapper/112:38:021
2454299311,14cyclictest0-21swapper/112:38:021
2454299311,13cyclictest0-21swapper/112:31:181
2454299311,13cyclictest0-21swapper/108:35:511
2454299311,12cyclictest0-21swapper/111:02:091
2454299311,12cyclictest0-21swapper/110:46:291
2454299311,12cyclictest0-21swapper/110:20:171
24536993122,2cyclictest3862-21kworker/0:012:30:590
2454999301,21cyclictest0-21swapper/208:57:032
2454999301,21cyclictest0-21swapper/208:57:032
2454999301,12cyclictest18257-21perf10:35:012
2454999300,22cyclictest0-21swapper/212:20:462
2454999300,22cyclictest0-21swapper/211:35:212
2454999300,12cyclictest0-21swapper/210:06:212
2454299301,19cyclictest0-21swapper/108:21:511
2454299301,14cyclictest0-21swapper/111:21:251
2454299301,13cyclictest0-21swapper/109:16:081
2454299301,13cyclictest0-21swapper/108:46:231
2454299301,12cyclictest0-21swapper/108:53:391
2454299301,12cyclictest0-21swapper/108:28:311
2454299301,11cyclictest0-21swapper/112:27:061
2454299301,11cyclictest0-21swapper/112:09:061
2454299301,11cyclictest0-21swapper/109:13:361
2454299301,10cyclictest10924-21chrt09:03:361
2454299300,13cyclictest0-21swapper/108:10:231
24536993020,2cyclictest23263-21kworker/0:208:25:250
24536993019,2cyclictest24503-21kworker/0:107:14:410
2454999291,19cyclictest0-21swapper/209:56:122
2454999291,11cyclictest22980-21threads08:15:252
2454999291,10cyclictest0-21swapper/209:27:522
2454999291,10cyclictest0-21swapper/207:54:222
2454999290,23cyclictest0-21swapper/210:53:212
2454999290,11cyclictest0-21swapper/207:55:162
2454299291,13cyclictest0-21swapper/110:17:371
2454299291,13cyclictest0-21swapper/109:09:121
2454299291,12cyclictest0-21swapper/110:53:131
2454299291,12cyclictest0-21swapper/107:55:551
2454299291,12cyclictest0-21swapper/107:48:351
2454299291,12cyclictest0-21swapper/107:48:351
2454299291,11cyclictest0-21swapper/112:16:021
2454299291,11cyclictest0-21swapper/112:00:181
2454299291,11cyclictest0-21swapper/111:38:411
2454299291,11cyclictest0-21swapper/109:46:091
2454299291,11cyclictest0-21swapper/108:00:231
2454299291,10cyclictest0-21swapper/111:47:421
2453699296,11cyclictest29887-21perf12:15:000
2453699292,20cyclictest8038-21kworker/0:008:13:230
2454999281,9cyclictest0-21swapper/209:11:072
2454999281,2cyclictest0-21swapper/207:38:302
2454999281,12cyclictest0-21swapper/207:42:322
2454299281,14cyclictest0-21swapper/110:08:211
2454299281,13cyclictest0-21swapper/110:29:291
2454299281,12cyclictest0-21swapper/111:10:411
2454299281,11cyclictest30738-21memory07:20:201
2454299281,11cyclictest0-21swapper/111:08:571
2454299281,11cyclictest0-21swapper/109:51:371
2454299281,10cyclictest0-21swapper/111:58:501
2454299281,10cyclictest0-21swapper/109:36:021
2454299281,10cyclictest0-21swapper/109:28:581
2454299281,10cyclictest0-21swapper/107:14:151
2454299280,12cyclictest0-21swapper/109:57:451
2454299280,11cyclictest0-21swapper/109:41:051
24536992817,6cyclictest10865-21kworker/0:109:03:420
24536992817,5cyclictest13514-21kworker/0:110:21:230
2454999271,8cyclictest0-21swapper/211:32:112
2454999271,13cyclictest8799-21diskstats07:45:162
2454999271,13cyclictest8799-21diskstats07:45:162
2454999271,10cyclictest0-21swapper/209:32:082
2454999271,10cyclictest0-21swapper/208:52:052
2454999270,18cyclictest0-21swapper/212:31:162
2454999270,18cyclictest0-21swapper/209:00:592
2454299271,13cyclictest0-21swapper/111:33:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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