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2026-01-03 - 14:05

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 Sat Jan 03, 2026 00:46:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5338222407387,13sleep90-21swapper/919:08:5215
5338132379363,10sleep60-21swapper/619:08:5012
5337672363355,5sleep140-21swapper/1419:08:096
5335452362354,5sleep10-21swapper/119:05:311
5336652358320,30sleep00-21swapper/019:06:510
5335852354335,12sleep110-21swapper/1119:05:573
5337342353333,13sleep40-21swapper/419:07:4210
5335512352333,12sleep70-21swapper/719:05:3613
5338922351332,12sleep30-21swapper/319:09:509
5336572351332,13sleep150-21swapper/1519:06:497
5338252350308,13sleep120-21swapper/1219:08:554
5337922349330,12sleep50-21swapper/519:08:3211
5337662349329,13sleep130-21swapper/1319:08:075
5335462347327,13sleep20-21swapper/219:05:318
5337612346329,10sleep80-21swapper/819:08:0214
5336282344324,13sleep100-21swapper/1019:06:282
53435299446,25cyclictest0-21swapper/121:09:401
534399993333,0cyclictest0-21swapper/1523:15:207
53436499330,30cyclictest0-21swapper/519:10:1711
53438999320,29cyclictest0-21swapper/1219:50:194
534383993229,1cyclictest0-21swapper/1019:25:162
534383993228,4cyclictest1931-21snmpd20:52:132
534369993228,4cyclictest1931-21snmpd19:43:3213
53435299327,25cyclictest0-21swapper/123:21:271
53439799310,30cyclictest0-21swapper/1423:16:506
53439799310,30cyclictest0-21swapper/1421:14:206
534392993129,1cyclictest1931-21snmpd20:45:265
53438999310,30cyclictest0-21swapper/1220:11:334
534387993130,1cyclictest704151-21kworker/11:0+events22:55:203
534387993129,1cyclictest737413-21kworker/11:2+events00:21:163
534387993129,1cyclictest554387-21kworker/11:2+events22:09:143
534387993129,1cyclictest554387-21kworker/11:2+events21:12:093
534383993127,3cyclictest757898-21ethtool23:35:162
53438199310,30cyclictest0-21swapper/919:42:5115
53436999310,30cyclictest0-21swapper/720:58:0713
534362993130,1cyclictest1931-21snmpd23:09:3510
534362993130,1cyclictest1931-21snmpd19:20:2510
53435799310,30cyclictest0-21swapper/323:12:499
53435799310,30cyclictest0-21swapper/322:45:159
53435799310,30cyclictest0-21swapper/322:32:369
53435799310,30cyclictest0-21swapper/322:23:469
53435799310,30cyclictest0-21swapper/322:15:159
53435799310,30cyclictest0-21swapper/321:56:309
53435799310,30cyclictest0-21swapper/321:56:309
53435799310,30cyclictest0-21swapper/321:36:309
53435799310,30cyclictest0-21swapper/320:52:439
53435799310,30cyclictest0-21swapper/320:25:569
53435799310,30cyclictest0-21swapper/320:17:479
53435799310,30cyclictest0-21swapper/319:40:299
53435799310,30cyclictest0-21swapper/300:11:259
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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