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2026-05-22 - 16:07

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #2

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 rack8slot2s.osadl.org (updated Fri May 22, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4012895997770,3cyclictest0-21swapper/120:10:451
4012897997566,6cyclictest86-21hwrng23:20:113
4012897997566,6cyclictest86-21hwrng23:20:113
4012895997367,3cyclictest0-21swapper/120:40:141
4012895997165,3cyclictest0-21swapper/123:56:021
4012896997064,3cyclictest0-21swapper/219:55:232
4012895997064,3cyclictest0-21swapper/121:45:591
4012895997064,3cyclictest0-21swapper/121:45:591
4012895997063,3cyclictest0-21swapper/100:05:151
4012896996863,3cyclictest0-21swapper/220:35:192
4012895996861,4cyclictest0-21swapper/123:20:461
4012895996861,4cyclictest0-21swapper/123:20:461
4012896996458,3cyclictest0-21swapper/222:18:452
4012896995953,4cyclictest0-21swapper/222:45:222
4012896995650,3cyclictest0-21swapper/221:26:312
4012895995650,3cyclictest0-21swapper/121:15:261
4012896995546,5cyclictest0-21swapper/221:35:442
4012896995346,4cyclictest0-21swapper/222:42:182
4012895995348,2cyclictest0-21swapper/119:55:231
4012895995346,4cyclictest0-21swapper/119:49:531
4012895995346,4cyclictest0-21swapper/119:49:531
4012896995245,4cyclictest0-21swapper/220:25:052
4012895995247,2cyclictest0-21swapper/120:35:191
4012895995246,3cyclictest0-21swapper/122:05:301
4012894995246,4cyclictest86-21hwrng22:55:370
4012894995246,4cyclictest86-21hwrng22:55:370
4012896995043,4cyclictest0-21swapper/221:19:212
4012894995043,4cyclictest86-21hwrng00:16:300
4012897994827,19cyclictest0-21swapper/323:35:113
4012897994827,19cyclictest0-21swapper/323:35:113
4012895994842,3cyclictest0-21swapper/122:18:451
401289499489,4cyclictest171ktimers/022:20:480
4012894994821,22cyclictest4052341-21ssh21:10:560
4012897994739,5cyclictest86-21hwrng23:09:573
4012897994720,16cyclictest4107633-21ssh22:35:493
4012897994718,19cyclictest4168494-21ssh00:10:083
401289499471,41cyclictest4022413-21sendmail-msp19:40:060
4012897994632,11cyclictest52-21ksoftirqd/321:34:523
4012897994632,11cyclictest52-21ksoftirqd/321:34:523
4012897994618,20cyclictest4175572-21fschecks_time00:20:483
401289799461,41cyclictest4119627-21ssh22:55:123
401289799461,41cyclictest4119627-21ssh22:55:123
4012896994639,4cyclictest0-21swapper/222:39:142
4012895994640,3cyclictest0-21swapper/123:26:531
4012895994640,3cyclictest0-21swapper/123:26:531
4012895994640,3cyclictest0-21swapper/123:06:281
4012895994640,3cyclictest0-21swapper/122:25:141
4012895994638,4cyclictest0-21swapper/100:11:071
4012897994524,19cyclictest0-21swapper/320:10:463
4012897994524,18cyclictest0-21swapper/322:45:303
401289799452,38cyclictest4077227-21ssh21:50:163
4012897994520,21cyclictest4172843-21ntpq00:15:533
4012897994515,4cyclictest10350irq/123-8000000.ethernet-tx100:30:093
4012896994538,4cyclictest0-21swapper/200:13:262
4012896994521,17cyclictest0-21swapper/220:40:052
4012896994517,19cyclictest0-21swapper/221:00:072
4012895994539,3cyclictest0-21swapper/123:35:141
4012895994539,3cyclictest0-21swapper/123:35:141
4012895994539,3cyclictest0-21swapper/123:10:131
4012895994539,3cyclictest0-21swapper/123:04:301
4012895994539,3cyclictest0-21swapper/121:44:161
4012895994539,3cyclictest0-21swapper/121:21:261
4012895994539,3cyclictest0-21swapper/100:22:361
4012895994538,4cyclictest0-21swapper/123:47:091
4012895994538,4cyclictest0-21swapper/123:47:091
4012895994538,4cyclictest0-21swapper/122:43:021
4012895994538,4cyclictest0-21swapper/119:10:141
4012895994538,4cyclictest0-21swapper/100:03:061
4012895994537,4cyclictest0-21swapper/100:26:361
4012894994519,17cyclictest4126983-21ssh23:05:370
4012897994424,15cyclictest4109831-21ssh22:40:093
401289799442,37cyclictest4091031-21ntpq22:10:353
4012897994423,17cyclictest4150004-21ntpq23:40:543
4012897994421,20cyclictest0-21swapper/323:05:303
4012897994421,19cyclictest4100065-21ssh22:25:083
4012897994420,20cyclictest4081529-21ntpq21:55:573
4012897994420,20cyclictest4081529-21ntpq21:55:573
4012897994420,20cyclictest4045747-21ps20:50:483
4012896994438,3cyclictest0-21swapper/222:00:192
4012896994417,19cyclictest0-21swapper/200:20:052
4012895994438,3cyclictest0-21swapper/123:42:101
4012895994438,3cyclictest0-21swapper/123:17:021
4012895994438,3cyclictest0-21swapper/122:54:151
4012895994438,3cyclictest0-21swapper/122:22:291
4012895994438,3cyclictest0-21swapper/122:04:301
4012895994438,3cyclictest0-21swapper/121:30:201
4012895994438,3cyclictest0-21swapper/121:30:201
4012895994438,3cyclictest0-21swapper/119:35:121
4012895994438,3cyclictest0-21swapper/100:16:561
4012895994437,3cyclictest0-21swapper/122:46:311
4012895994436,4cyclictest0-21swapper/122:58:141
4012895994436,4cyclictest0-21swapper/122:58:141
4012894994419,16cyclictest4142390-21ssh23:30:070
4012894994418,22cyclictest4185752-21ssh00:35:520
4012894994418,22cyclictest4185752-21ssh00:35:520
4012897994322,17cyclictest0-21swapper/321:11:113
4012897994321,18cyclictest4059492-21ssh21:21:133
4012897994320,17cyclictest4132763-21ssh23:15:313
4012897994320,17cyclictest4117583-21ssh22:50:563
4012897994319,20cyclictest4104342-21ntpq22:30:483
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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