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2025-05-02 - 12:49

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #7

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 rack0slot7s.osadl.org (updated Fri May 02, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3607623212671,22sleep20-21swapper/219:07:042
3607683212572,23sleep00-21swapper/019:07:500
3607777210659,12sleep10-21swapper/119:09:031
3607516210273,21sleep30-21swapper/319:05:403
360801999868,40cyclictest0-21swapper/122:10:231
3608025992712,14cyclictest0-21swapper/300:10:133
3608023992612,13cyclictest0-21swapper/200:10:122
3608019992513,12cyclictest0-21swapper/100:10:161
360801999250,25cyclictest0-21swapper/123:54:421
360802599240,15cyclictest0-21swapper/320:31:053
360801999240,16cyclictest0-21swapper/123:19:181
360802599230,15cyclictest0-21swapper/319:12:343
360801999220,13cyclictest0-21swapper/123:06:041
360801799220,21cyclictest0-21swapper/019:45:190
3608025992115,5cyclictest1051-21snmpd19:39:343
360801999205,7cyclictest3668586-21irqstats21:40:161
360802599199,4cyclictest0-21swapper/320:46:423
360802599180,17cyclictest0-21swapper/322:16:533
360801799185,13cyclictest0-21swapper/023:18:090
360801799180,17cyclictest0-21swapper/023:58:120
360801799180,17cyclictest0-21swapper/019:26:240
360801799180,17cyclictest0-21swapper/000:04:180
3608025991716,1cyclictest0-21swapper/321:21:533
3608025991715,1cyclictest0-21swapper/321:10:393
360802599170,17cyclictest0-21swapper/323:37:053
360802599170,16cyclictest0-21swapper/319:49:563
360802599170,15cyclictest0-21swapper/321:01:193
3608023991716,1cyclictest0-21swapper/200:39:592
360801999174,13cyclictest0-21swapper/123:34:051
360801999170,17cyclictest0-21swapper/100:23:251
360801799176,5cyclictest0-21swapper/020:05:290
3608017991715,1cyclictest1051-21snmpd22:26:220
3608017991715,1cyclictest0-21swapper/019:39:290
3608017991711,5cyclictest0-21swapper/022:49:430
360801799170,16cyclictest0-21swapper/021:52:320
360801799170,16cyclictest0-21swapper/020:20:170
360801799170,16cyclictest0-21swapper/020:12:330
360801799170,16cyclictest0-21swapper/000:08:150
360802599166,10cyclictest0-21swapper/321:44:283
3608025991614,1cyclictest1051-21snmpd19:51:283
3608025991612,4cyclictest0-21swapper/322:49:203
360802599160,7cyclictest0-21swapper/323:10:153
360802599160,7cyclictest0-21swapper/323:00:593
360802599160,15cyclictest0-21swapper/320:20:203
3608023991614,1cyclictest1051-21snmpd20:14:452
3608019991614,1cyclictest1051-21snmpd00:37:311
3608019991612,4cyclictest0-21swapper/121:17:581
360801999160,7cyclictest0-21swapper/121:31:111
360801999160,16cyclictest0-21swapper/119:51:231
3608017991615,1cyclictest0-21swapper/022:32:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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