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2026-03-15 - 02:59

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 Sun Mar 15, 2026 00:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
126702239163,24sleep10-21swapper/119:08:251
124652235158,24sleep20-21swapper/219:05:442
125992230158,59sleep00-21swapper/019:07:280
126072215145,57sleep30-21swapper/319:07:353
12899999188,2cyclictest0-21swapper/319:52:103
12899999087,2cyclictest0-21swapper/320:51:133
12899996663,2cyclictest0-21swapper/323:30:303
12899995754,2cyclictest0-21swapper/321:41:073
109972570,3sleep09-21rcu_preempt21:30:140
12899994944,3cyclictest0-21swapper/320:00:303
1289399481,39cyclictest0-21swapper/219:40:102
1289399461,34cyclictest0-21swapper/222:18:192
1289399431,27cyclictest0-21swapper/221:06:472
1289399411,28cyclictest0-21swapper/220:52:512
1289399411,27cyclictest0-21swapper/220:57:112
1289399411,27cyclictest0-21swapper/220:31:592
1289399401,26cyclictest0-21swapper/221:59:302
1289399381,28cyclictest0-21swapper/223:11:272
1288899381,11cyclictest0-21swapper/121:44:551
1288899381,10cyclictest0-21swapper/119:26:431
1288399388,13cyclictest11963-21munin-run20:20:010
12883993810,13cyclictest14777-21munin-run21:40:010
12893993726,3cyclictest0-21swapper/221:20:312
1289399371,24cyclictest0-21swapper/222:46:352
1289399371,22cyclictest0-21swapper/220:05:512
1288899371,15cyclictest0-21swapper/120:56:391
1288899371,14cyclictest9388-21chrt23:54:591
1288899371,10cyclictest0-21swapper/119:50:391
12883993710,13cyclictest15393-21munin-run22:55:000
1289399361,24cyclictest0-21swapper/221:30:232
1289399361,24cyclictest0-21swapper/219:54:542
1289399361,24cyclictest0-21swapper/200:17:192
1289399361,23cyclictest0-21swapper/219:55:432
1289399361,21cyclictest0-21swapper/219:16:072
1289399361,20cyclictest0-21swapper/221:42:502
1289399361,12cyclictest0-21swapper/221:37:192
1288899361,14cyclictest0-21swapper/120:00:151
1288399361,12cyclictest0-21swapper/020:11:530
1289999350,25cyclictest6358-21kworker/3:020:24:133
12893993523,3cyclictest0-21swapper/222:32:592
1289399351,27cyclictest0-21swapper/222:44:152
1289399351,26cyclictest0-21swapper/219:37:102
1289399351,16cyclictest0-21swapper/200:10:112
1288899351,13cyclictest0-21swapper/123:07:071
1288899350,12cyclictest0-21swapper/121:50:271
1288899350,10cyclictest0-21swapper/120:09:551
1288399358,13cyclictest3785-21munin-run21:15:010
1289399341,31cyclictest0-21swapper/221:10:392
1289399341,22cyclictest0-21swapper/223:32:232
1289399341,21cyclictest0-21swapper/223:56:142
1289399341,21cyclictest0-21swapper/223:43:312
1289399341,21cyclictest0-21swapper/223:43:312
1289399341,20cyclictest0-21swapper/223:16:392
1289399341,19cyclictest0-21swapper/220:15:072
1289399341,12cyclictest0-21swapper/223:47:502
1288899341,13cyclictest0-21swapper/121:30:461
1288899341,13cyclictest0-21swapper/121:10:471
1288899341,11cyclictest0-21swapper/119:36:551
1288899340,14cyclictest0-21swapper/121:26:581
1288899340,12cyclictest0-21swapper/123:36:261
1289399334,20cyclictest0-21swapper/221:45:242
12893993323,3cyclictest0-21swapper/223:06:232
1289399331,25cyclictest0-21swapper/222:53:512
1289399331,24cyclictest0-21swapper/200:05:062
1289399331,24cyclictest0-21swapper/200:03:462
1289399331,22cyclictest0-21swapper/219:10:432
1289399331,21cyclictest0-21swapper/223:21:352
1289399331,21cyclictest0-21swapper/219:33:342
1289399331,20cyclictest0-21swapper/220:03:472
1289399331,20cyclictest0-21swapper/219:47:502
1289399331,18cyclictest0-21swapper/220:47:232
1289399331,18cyclictest0-21swapper/220:14:072
1289399331,17cyclictest0-21swapper/200:29:092
1289399331,12cyclictest0-21swapper/223:39:192
1288899331,9cyclictest0-21swapper/119:55:271
1288899331,13cyclictest0-21swapper/119:33:151
1288899331,12cyclictest0-21swapper/122:12:551
1288899331,10cyclictest0-21swapper/120:52:511
1288899330,13cyclictest0-21swapper/120:25:031
1288899330,10cyclictest0-21swapper/121:23:061
1288399335,13cyclictest29542-21munin-run21:00:010
1289999321,19cyclictest6358-21kworker/3:000:07:453
1289399321,23cyclictest0-21swapper/222:05:582
1289399321,19cyclictest0-21swapper/222:13:232
1289399321,13cyclictest0-21swapper/222:59:152
1289399321,10cyclictest0-21swapper/220:27:432
1288899321,22cyclictest5882-21smart_sda22:30:231
1288899321,21cyclictest0-21swapper/123:44:011
1288899321,21cyclictest0-21swapper/123:44:011
1288899321,15cyclictest0-21swapper/123:17:581
1288899321,12cyclictest10181-21perl23:55:151
1288899320,14cyclictest0-21swapper/120:38:351
1288899320,14cyclictest0-21swapper/100:33:431
1288899320,13cyclictest0-21swapper/122:17:191
1288399322,27cyclictest14175-21perf20:25:010
1289399311,22cyclictest0-21swapper/219:22:232
1289399311,19cyclictest0-21swapper/221:18:272
1289399311,19cyclictest0-21swapper/221:18:272
1289399311,17cyclictest0-21swapper/223:26:592
1289399311,14cyclictest0-21swapper/222:20:272
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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