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2026-08-17 - 10:29

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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 rack0slot3s.osadl.org (updated Mon Aug 17, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25692352270261,6sleep50-21swapper/518:51:495
25693152264218,37sleep70-21swapper/718:53:007
25691972262214,16sleep00-21swapper/018:51:200
25691582262215,17sleep60-21swapper/618:50:446
25692682252228,16sleep20-21swapper/218:52:202
25691232249223,17sleep40-21swapper/418:50:154
25692932248223,16sleep30-21swapper/318:52:393
25691532243219,16sleep10-21swapper/118:50:381
2569712993430,3cyclictest2607498-21cat20:02:524
256970899320,28cyclictest0-21swapper/323:22:423
2569725992929,0cyclictest2612002-21kworker/6:0+events20:44:176
256970399290,26cyclictest528-21systemd-journal22:16:312
2569694992928,1cyclictest1390-21snmpd22:59:420
2569703992820,7cyclictest528-21systemd-journal19:18:442
2569730992722,4cyclictest1390-21snmpd22:19:227
2569703992720,5cyclictest528-21systemd-journal22:51:272
256970399270,23cyclictest0-21swapper/221:05:262
256969999270,25cyclictest0-21swapper/122:06:151
256969999270,25cyclictest0-21swapper/122:06:151
2569725992622,3cyclictest1390-21snmpd21:15:086
256972099260,22cyclictest0-21swapper/519:43:405
256970899260,22cyclictest0-21swapper/319:43:153
2569703992619,6cyclictest1390-21snmpd23:52:342
256970399260,24cyclictest0-21swapper/222:31:432
256970399260,22cyclictest0-21swapper/223:22:012
256970399260,22cyclictest0-21swapper/221:14:402
256969999264,1cyclictest0-21swapper/121:46:061
256969499263,23cyclictest1907017-21gnome-shell00:19:520
2569694992622,3cyclictest1390-21snmpd23:52:190
2569694992622,3cyclictest1390-21snmpd22:33:090
2569694992622,3cyclictest1390-21snmpd21:44:090
2569730992521,3cyclictest1390-21snmpd23:19:367
2569730992521,3cyclictest1390-21snmpd21:06:357
2569730992521,3cyclictest1390-21snmpd20:14:107
2569725992522,2cyclictest1390-21snmpd21:05:236
2569725992518,5cyclictest0-21swapper/620:45:526
256972599250,24cyclictest0-21swapper/619:10:116
2569720992518,5cyclictest0-21swapper/520:22:195
256972099250,1cyclictest0-21swapper/519:02:345
2569712992522,3cyclictest1390-21snmpd23:09:524
2569712992521,3cyclictest1390-21snmpd19:07:264
2569712992518,5cyclictest0-21swapper/421:22:024
2569708992518,5cyclictest0-21swapper/300:12:333
256970399250,25cyclictest0-21swapper/221:29:402
256970399250,25cyclictest0-21swapper/220:45:342
256970399250,23cyclictest0-21swapper/223:55:292
256970399250,23cyclictest0-21swapper/222:35:252
256970399250,23cyclictest0-21swapper/221:34:362
256970399250,23cyclictest0-21swapper/220:27:392
256970399250,23cyclictest0-21swapper/220:21:232
256970399250,23cyclictest0-21swapper/220:17:172
256970399250,23cyclictest0-21swapper/219:47:382
256970399250,23cyclictest0-21swapper/219:01:452
256970399250,23cyclictest0-21swapper/200:32:342
256970399250,22cyclictest0-21swapper/221:37:442
256970399250,21cyclictest0-21swapper/222:44:162
2569699992524,1cyclictest0-21swapper/120:44:441
2569699992521,3cyclictest1390-21snmpd23:47:081
2569699992518,5cyclictest0-21swapper/100:29:391
256969999251,23cyclictest0-21swapper/121:18:511
2569694992521,3cyclictest1390-21snmpd23:11:240
2569730992421,2cyclictest1390-21snmpd19:56:357
2569730992420,3cyclictest2734106-21cat00:03:297
256973099240,23cyclictest0-21swapper/720:42:007
2569725992423,1cyclictest2683120-21kworker/6:2+events23:11:156
2569725992422,1cyclictest1390-21snmpd20:02:296
2569725992421,2cyclictest2683120-21kworker/6:2+events22:50:146
2569725992420,3cyclictest1390-21snmpd19:55:226
2569725992417,5cyclictest0-21swapper/619:35:146
2569725992417,5cyclictest0-21swapper/619:35:136
2569725992417,3cyclictest0-21swapper/621:02:376
256972599240,23cyclictest0-21swapper/621:51:266
2569720992418,4cyclictest0-21swapper/522:13:375
2569720992417,5cyclictest0-21swapper/520:46:465
256972099240,23cyclictest0-21swapper/521:47:215
256972099240,23cyclictest0-21swapper/521:01:225
2569712992421,3cyclictest1390-21snmpd00:18:204
256971299240,22cyclictest0-21swapper/422:01:484
256971299240,22cyclictest0-21swapper/420:20:394
2569708992423,1cyclictest0-21swapper/320:02:523
2569708992420,3cyclictest1390-21snmpd22:23:553
2569708992418,2cyclictest0-21swapper/322:57:123
2569708992417,3cyclictest0-21swapper/322:00:523
256970899240,22cyclictest0-21swapper/322:45:523
2569703992420,3cyclictest1390-21snmpd23:17:122
2569703992420,3cyclictest1390-21snmpd22:04:162
2569703992420,3cyclictest1390-21snmpd22:04:162
2569703992417,5cyclictest0-21swapper/220:08:592
2569703992417,3cyclictest0-21swapper/200:35:132
2569703992417,3cyclictest0-21swapper/200:35:132
256970399241,22cyclictest0-21swapper/221:16:362
256970399240,24cyclictest0-21swapper/218:55:052
256970399240,22cyclictest0-21swapper/223:44:142
256970399240,22cyclictest0-21swapper/223:39:382
256970399240,22cyclictest0-21swapper/223:35:112
256970399240,22cyclictest0-21swapper/222:20:052
256970399240,22cyclictest0-21swapper/222:12:032
256970399240,22cyclictest0-21swapper/222:12:032
256970399240,22cyclictest0-21swapper/222:00:022
256970399240,22cyclictest0-21swapper/221:53:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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