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2026-06-06 - 06:26

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 50 highest latencies:
System rack0slot3s.osadl.org (updated Sat Jun 06, 2026 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3994402287266,18sleep30-21swapper/319:06:123
3995622262214,15sleep40-21swapper/419:07:414
3993892260215,16sleep50-21swapper/519:05:335
3995092259214,36sleep00-21swapper/019:06:570
3996262253210,33sleep70-21swapper/719:08:337
3995332248207,32sleep20-21swapper/219:07:152
3996292243219,16sleep10-21swapper/119:08:351
3995162243219,16sleep60-21swapper/619:07:036
400025993531,2cyclictest210055-21kworker/5:2-events22:20:115
400025993129,2cyclictest0-21swapper/522:30:135
400025993127,2cyclictest0-21swapper/522:05:005
400025993026,2cyclictest0-21swapper/523:05:155
400017992928,1cyclictest0-21swapper/323:18:583
400017992927,2cyclictest0-21swapper/321:44:373
400017992927,1cyclictest0-21swapper/320:25:083
40001799290,29cyclictest0-21swapper/322:14:413
40000399296,22cyclictest0-21swapper/022:25:580
400003992922,5cyclictest481744-21memory21:35:160
40001799280,26cyclictest0-21swapper/322:03:113
400008992822,4cyclictest0-21swapper/123:10:151
40003299270,1cyclictest0-21swapper/620:09:236
40002599270,25cyclictest504892-21sh22:19:595
40000899270,25cyclictest0-21swapper/122:17:441
40000899270,25cyclictest0-21swapper/121:44:161
40000399270,4cyclictest14-21ksoftirqd/019:16:330
40003299260,22cyclictest0-21swapper/622:00:326
400025992623,2cyclictest509400-21ntpq22:25:195
400025992622,3cyclictest411475-21in.tftpd19:28:315
40002599262,22cyclictest539617-21ntpq23:20:225
400025992622,2cyclictest0-21swapper/520:50:255
400025992621,4cyclictest547825-21ntpq23:35:195
40002599260,24cyclictest0-21swapper/521:16:295
400008992622,3cyclictest1391-21snmpd19:28:151
400008992622,3cyclictest1391-21snmpd19:23:271
400008992622,3cyclictest1391-21snmpd19:23:271
40000899260,25cyclictest3946151kworker/u32:1+i91519:47:591
400003992624,1cyclictest1391-21snmpd21:29:220
400039992522,3cyclictest1391-21snmpd22:26:477
40003999250,23cyclictest0-21swapper/723:45:107
400032992518,5cyclictest0-21swapper/619:36:106
40003299250,1cyclictest0-21swapper/619:44:586
400025992521,3cyclictest1391-21snmpd21:33:585
400025992521,3cyclictest1391-21snmpd19:21:455
400025992521,3cyclictest1391-21snmpd19:21:455
400025992521,2cyclictest440827-21pmu-power20:20:215
400025992521,2cyclictest0-21swapper/500:35:195
400025992520,3cyclictest519324-21ls22:45:115
400025992518,5cyclictest534126-21ntpq23:10:195
40002599250,23cyclictest554626-21latency_hist23:49:595
40002599250,21cyclictest0-21swapper/521:51:205
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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