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2025-07-07 - 02:19

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #5

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 rack0slot5s.osadl.org (updated Mon Jul 07, 2025 00:47:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36536892376318,19sleep70-21swapper/719:06:3913
36538682370320,16sleep20-21swapper/219:09:158
36538002363308,45sleep80-21swapper/819:08:1714
36538692353326,18sleep30-21swapper/319:09:169
36537632353327,18sleep60-21swapper/619:07:4212
36537892350322,19sleep140-21swapper/1419:08:076
36538042348321,18sleep120-21swapper/1219:08:214
36536602345318,18sleep150-21swapper/1519:06:147
36536562344318,18sleep110-21swapper/1119:06:113
36536402344316,19sleep130-21swapper/1319:05:575
36537102343316,18sleep100-21swapper/1019:06:572
36536322342315,19sleep50-21swapper/519:05:4911
36537792341314,18sleep40-21swapper/419:07:5710
36537662339286,18sleep90-21swapper/919:07:4615
36508682339313,18sleep00-21swapper/019:05:110
36536452338310,18sleep10-21swapper/119:06:011
365424699620,25cyclictest0-21swapper/620:43:0512
365424699610,25cyclictest0-21swapper/620:10:0912
365424699610,25cyclictest0-21swapper/620:10:0912
365424699510,25cyclictest0-21swapper/622:43:5512
3654246994925,15cyclictest0-21swapper/619:26:1212
3654246994710,24cyclictest0-21swapper/619:37:1212
365424199430,43cyclictest0-21swapper/500:26:5411
365424199430,43cyclictest0-21swapper/500:26:5411
3654228994342,1cyclictest1526-21snmpd23:20:469
3654251994241,1cyclictest0-21swapper/723:18:2113
365424699424,13cyclictest3782431-21latency_hist21:59:5912
3654246994140,1cyclictest0-21swapper/623:52:4412
3654286994039,1cyclictest1526-21snmpd20:01:097
365422599400,0cyclictest0-21swapper/200:26:548
365422599400,0cyclictest0-21swapper/200:26:548
3654256993938,1cyclictest1526-21snmpd19:34:0514
3654251993938,1cyclictest0-21swapper/723:49:4413
365424699380,25cyclictest0-21swapper/623:49:4912
3654274993736,1cyclictest0-21swapper/1221:34:274
3654269993736,1cyclictest0-21swapper/1123:20:463
3654269993634,1cyclictest0-21swapper/1119:53:153
3654251993636,0cyclictest0-21swapper/723:52:4413
3654246993534,1cyclictest1526-21snmpd00:08:2612
3654246993510,14cyclictest0-21swapper/622:21:5712
3654246993510,14cyclictest0-21swapper/622:21:5712
3654241993534,1cyclictest0-21swapper/519:56:1211
3654282993433,1cyclictest0-21swapper/1423:38:256
3654260993432,1cyclictest0-21swapper/923:02:5915
365425199347,27cyclictest0-21swapper/721:01:0513
365424699347,27cyclictest0-21swapper/619:48:1112
3654246993410,24cyclictest0-21swapper/623:38:5012
3654246993410,24cyclictest0-21swapper/600:11:4612
3654241993433,1cyclictest0-21swapper/521:02:2911
365428699330,32cyclictest0-21swapper/1521:45:007
3654274993328,4cyclictest1526-21snmpd23:58:014
365424699338,14cyclictest0-21swapper/622:54:5412
365424699338,14cyclictest0-21swapper/621:27:0212
3654241993328,4cyclictest1526-21snmpd22:59:0911
3654282993231,1cyclictest0-21swapper/1420:34:586
365424699328,14cyclictest0-21swapper/620:32:0612
3654225993231,1cyclictest0-21swapper/221:02:298
3654274993129,1cyclictest0-21swapper/1219:53:154
365425199316,17cyclictest0-21swapper/722:45:0713
3654225993131,0cyclictest0-21swapper/219:56:118
3654282993029,1cyclictest0-21swapper/1423:02:596
3654282993026,3cyclictest1526-21snmpd00:21:126
3654282993026,3cyclictest1526-21snmpd00:21:126
3654277993029,1cyclictest1526-21snmpd22:12:465
3654277993029,1cyclictest1526-21snmpd22:12:465
3654256993010,19cyclictest1526-21snmpd00:03:5614
365425699300,29cyclictest0-21swapper/820:01:4814
365424699306,11cyclictest0-21swapper/621:38:0112
3654228993030,0cyclictest0-21swapper/323:35:579
3654221993024,6cyclictest0-21swapper/122:37:561
3654286992928,1cyclictest1526-21snmpd20:51:177
3654286992913,16cyclictest0-21swapper/1500:28:337
3654286992913,16cyclictest0-21swapper/1500:28:327
365428699290,29cyclictest0-21swapper/1519:29:057
365428699290,22cyclictest0-21swapper/1521:17:387
365426599290,28cyclictest0-21swapper/1023:20:042
365426099290,29cyclictest0-21swapper/900:21:1215
365426099290,29cyclictest0-21swapper/900:21:1215
3654251992929,0cyclictest0-21swapper/700:08:2613
365422199290,29cyclictest0-21swapper/121:12:141
365428299289,19cyclictest3608770-21kworker/14:0+events_freezable_pwr_efficient19:48:116
365427799280,27cyclictest0-21swapper/1300:06:595
365427499281,27cyclictest0-21swapper/1200:15:394
365427499281,27cyclictest0-21swapper/1200:15:394
3654265992827,1cyclictest1526-21snmpd22:55:242
3654260992825,2cyclictest3819595-21kworker/9:0+events22:55:0015
3654260992817,8cyclictest0-21swapper/919:26:0515
365426099280,28cyclictest0-21swapper/919:58:4215
3654256992825,2cyclictest1526-21snmpd00:32:2314
365425199280,27cyclictest0-21swapper/721:15:0813
365425199280,21cyclictest0-21swapper/723:05:3913
365424699280,28cyclictest0-21swapper/620:05:5712
365424699280,28cyclictest0-21swapper/620:05:5712
365424199280,22cyclictest0-21swapper/522:48:3011
3654228992827,1cyclictest0-21swapper/300:33:219
3654225992827,1cyclictest1526-21snmpd22:41:448
3654216992827,1cyclictest1526-21snmpd23:18:370
3654216992827,1cyclictest0-21swapper/023:55:350
3654286992726,1cyclictest1526-21snmpd22:48:457
3654282992726,1cyclictest1526-21snmpd19:51:586
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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