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2026-05-09 - 15:56

OSADL QA Farm on Real-time of Mainline Linux

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

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 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 rackbslot8s (updated Sat May 09, 2026 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10582542136117,14sleep10-21swapper/107:08:051
105862099121121,0cyclictest0-21swapper/211:35:482
10581682115100,9sleep70-21swapper/707:06:507
10581562115100,10sleep40-21swapper/407:06:394
1058385211499,10sleep00-21swapper/007:09:560
1058090211399,9sleep30-21swapper/307:05:423
1058119211298,9sleep50-21swapper/507:06:085
1058353210994,10sleep60-21swapper/607:09:296
1056278210792,10sleep20-21swapper/207:05:092
10586209910498,0cyclictest31-21ksoftirqd/210:50:072
105863799102100,2cyclictest553-21snmpd11:29:236
10586289910298,3cyclictest553-21snmpd09:02:484
1058628991020,101cyclictest0-21swapper/407:40:154
1058639991010,100cyclictest0-21swapper/707:21:487
105863799101100,1cyclictest553-21snmpd08:25:146
1058628991010,99cyclictest0-21swapper/408:44:204
1058628991010,101cyclictest0-21swapper/410:07:264
1058628991010,101cyclictest0-21swapper/409:59:004
1058628991010,101cyclictest0-21swapper/409:58:594
10586209910199,2cyclictest1112027-21cat08:50:152
10586209910199,1cyclictest31-21ksoftirqd/210:15:212
1058620991010,100cyclictest0-21swapper/212:28:452
1058620991010,100cyclictest0-21swapper/208:30:502
1058620991010,100cyclictest0-21swapper/208:21:582
10586159910199,2cyclictest553-21snmpd09:47:141
10586159910199,2cyclictest553-21snmpd09:47:141
1058615991010,100cyclictest0-21swapper/110:26:271
1058615991010,100cyclictest0-21swapper/110:24:121
10586119910199,2cyclictest553-21snmpd09:23:280
10586119910199,2cyclictest553-21snmpd08:19:550
1058611991010,100cyclictest0-21swapper/007:18:440
1058639991000,99cyclictest0-21swapper/711:26:117
1058639991000,99cyclictest0-21swapper/708:07:497
1058639991000,100cyclictest0-21swapper/711:38:247
1058639991000,100cyclictest0-21swapper/711:19:087
1058639991000,100cyclictest0-21swapper/709:36:197
1058639991000,100cyclictest0-21swapper/707:18:387
10586379910099,1cyclictest553-21snmpd12:06:256
10586379910099,1cyclictest553-21snmpd10:57:046
10586379910099,1cyclictest553-21snmpd09:47:036
10586379910099,1cyclictest553-21snmpd09:47:026
10586379910099,1cyclictest553-21snmpd09:18:126
1058637991000,99cyclictest0-21swapper/609:21:386
1058637991000,99cyclictest0-21swapper/608:16:436
10586329910099,1cyclictest553-21snmpd12:37:235
10586329910099,1cyclictest553-21snmpd11:29:085
10586329910099,1cyclictest553-21snmpd09:45:345
10586329910099,1cyclictest553-21snmpd09:45:345
10586329910099,1cyclictest553-21snmpd08:30:335
10586329910099,1cyclictest553-21snmpd07:41:165
10586329910098,2cyclictest0-21swapper/511:09:265
10586329910097,2cyclictest553-21snmpd09:13:155
1058632991000,99cyclictest0-21swapper/512:26:195
1058632991000,99cyclictest0-21swapper/507:38:095
1058632991000,100cyclictest0-21swapper/510:21:015
10586289910099,1cyclictest553-21snmpd08:49:564
10586289910099,1cyclictest553-21snmpd07:12:084
10586289910098,2cyclictest553-21snmpd07:18:354
10586289910097,3cyclictest553-21snmpd10:44:524
1058628991000,99cyclictest0-21swapper/412:06:384
1058628991000,99cyclictest0-21swapper/410:47:354
1058628991000,99cyclictest0-21swapper/410:27:304
1058628991000,99cyclictest0-21swapper/408:55:544
1058628991000,99cyclictest0-21swapper/407:38:344
10586239910099,1cyclictest553-21snmpd11:45:003
10586239910099,1cyclictest553-21snmpd10:01:203
10586239910099,1cyclictest553-21snmpd09:17:303
10586239910099,1cyclictest553-21snmpd09:10:333
10586239910099,1cyclictest553-21snmpd09:05:063
10586239910099,1cyclictest553-21snmpd09:03:333
10586239910099,1cyclictest553-21snmpd08:38:323
10586239910099,1cyclictest553-21snmpd07:23:083
10586239910099,0cyclictest553-21snmpd12:19:463
105862399100100,0cyclictest553-21snmpd09:51:143
105862399100100,0cyclictest553-21snmpd09:51:143
10586209910099,1cyclictest553-21snmpd11:19:052
10586209910099,1cyclictest553-21snmpd09:37:112
10586209910099,1cyclictest553-21snmpd09:25:132
10586209910099,1cyclictest553-21snmpd09:19:092
10586209910099,1cyclictest553-21snmpd08:37:442
10586209910099,1cyclictest1082827-21kworker/2:109:57:032
10586209910099,1cyclictest1082827-21kworker/2:109:57:032
10586209910098,2cyclictest553-21snmpd10:10:122
1058620991000,99cyclictest0-21swapper/211:28:092
1058620991000,99cyclictest0-21swapper/210:55:462
1058620991000,99cyclictest0-21swapper/210:35:302
1058620991000,99cyclictest0-21swapper/208:25:232
1058620991000,1cyclictest1120924-21diskmemload12:32:512
1058620991000,100cyclictest0-21swapper/212:07:252
1058620991000,100cyclictest0-21swapper/212:04:142
1058620991000,100cyclictest0-21swapper/211:55:142
1058620991000,100cyclictest0-21swapper/211:05:382
1058620991000,100cyclictest0-21swapper/210:21:302
10586159910099,1cyclictest553-21snmpd11:23:261
10586159910099,1cyclictest553-21snmpd10:05:081
1058615991000,99cyclictest0-21swapper/112:32:051
1058615991000,99cyclictest0-21swapper/110:46:161
1058615991000,99cyclictest0-21swapper/109:24:161
1058615991000,99cyclictest0-21swapper/108:58:181
1058615991000,100cyclictest0-21swapper/111:58:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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