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2025-07-01 - 05:26

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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 rack0slot4s.osadl.org (updated Tue Jul 01, 2025 00:46:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21365662416395,13sleep30-21swapper/319:06:309
21365182367346,14sleep80-21swapper/819:05:4714
21365412360329,5sleep120-21swapper/1219:06:074
21365482355318,31sleep20-21swapper/219:06:138
21367522354333,15sleep70-21swapper/719:08:5913
21355272354345,6sleep00-21swapper/019:05:220
21367632351330,13sleep10-21swapper/119:09:081
21365432351336,11sleep140-21swapper/1419:06:086
21366372349329,13sleep100-21swapper/1019:07:262
21367922348326,14sleep130-21swapper/1319:09:375
21367492347327,13sleep40-21swapper/419:08:5510
21366752347325,13sleep60-21swapper/619:07:5312
21365382346325,14sleep90-21swapper/919:06:0415
21367392345324,14sleep110-21swapper/1119:08:473
21333462345322,15sleep150-21swapper/1519:05:067
21365512341320,14sleep50-21swapper/519:06:1511
234539721090,0sleep121311rcuc/1221:45:194
2137275995025,25cyclictest1501ktimers/1422:20:086
213727599435,25cyclictest0-21swapper/1422:53:056
213727599435,25cyclictest0-21swapper/1422:53:046
213727599435,25cyclictest0-21swapper/1400:20:576
2137250993836,0cyclictest0-21swapper/620:57:2812
2137260993735,1cyclictest0-21swapper/920:57:3015
2137244993736,1cyclictest2333853-21kworker/u32:3+events_unbound21:35:2210
2137254993612,21cyclictest0-21swapper/723:25:1413
2137254993424,2cyclictest2082039-21kworker/7:1+events00:10:2313
2137244993432,0cyclictest0-21swapper/422:44:4710
2137275993228,3cyclictest0-21swapper/1422:05:136
2137250993230,1cyclictest0-21swapper/600:00:5112
2137247993230,2cyclictest0-21swapper/522:28:1711
2137247993226,1cyclictest1813-21snmpd22:52:5311
2137247993226,1cyclictest1813-21snmpd22:52:5311
2137244993232,0cyclictest0-21swapper/400:00:1210
213727599310,30cyclictest0-21swapper/1423:56:206
213727599310,30cyclictest0-21swapper/1419:57:016
2137272993130,1cyclictest1813-21snmpd00:28:365
213727299310,30cyclictest0-21swapper/1300:10:385
213727099310,30cyclictest0-21swapper/1221:26:424
2137265993130,1cyclictest1813-21snmpd00:37:533
213726299310,30cyclictest0-21swapper/1023:43:072
213726299310,30cyclictest0-21swapper/1020:41:072
213726099310,30cyclictest0-21swapper/922:08:5015
213725699310,30cyclictest0-21swapper/800:15:1514
2137247993129,2cyclictest2421855-21mii-tool22:30:1811
213724499311,29cyclictest0-21swapper/422:27:4410
2137234993130,1cyclictest1813-21snmpd20:21:241
2137234993130,1cyclictest1813-21snmpd19:39:451
2137234993130,1cyclictest1813-21snmpd19:39:451
2137277993029,1cyclictest1813-21snmpd20:59:587
213727599300,29cyclictest0-21swapper/1422:01:106
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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