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2026-01-11 - 10:06

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #8

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 rackbslot8s (updated Sun Jan 11, 2026 00:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2302632131116,9sleep70-21swapper/719:09:387
2301202127112,10sleep30-21swapper/319:07:333
228175212799,9sleep10-21swapper/119:05:081
230037212597,9sleep60-21swapper/619:06:256
2299862123109,9sleep20-21swapper/219:05:412
2281782122108,9sleep40-21swapper/419:05:104
2301782121106,10sleep50-21swapper/519:08:235
2301442116102,9sleep00-21swapper/019:07:550
230539991020,100cyclictest0-21swapper/621:26:416
2305349910299,3cyclictest2579219-21snmpd20:00:105
230534991020,1cyclictest0-21swapper/521:00:165
230534991020,101cyclictest0-21swapper/522:53:085
230534991020,100cyclictest0-21swapper/521:24:295
23053199102100,2cyclictest2579219-21snmpd21:33:154
2305399910199,2cyclictest2579219-21snmpd23:52:026
2305399910198,3cyclictest2579219-21snmpd22:36:496
230539991010,101cyclictest0-21swapper/620:00:566
230539991010,0cyclictest0-21swapper/621:20:206
2305349910199,2cyclictest2579219-21snmpd23:37:185
2305349910199,2cyclictest2579219-21snmpd23:14:125
230534991010,101cyclictest0-21swapper/523:55:465
23053199101100,1cyclictest2579219-21snmpd23:09:574
230531991010,100cyclictest0-21swapper/422:32:014
230531991010,100cyclictest0-21swapper/422:26:564
2305269910199,2cyclictest2579219-21snmpd00:36:443
2305269910199,2cyclictest2579219-21snmpd00:21:303
2305269910199,2cyclictest2579219-21snmpd00:21:303
23052699101100,1cyclictest2579219-21snmpd19:11:433
230524991010,100cyclictest0-21swapper/219:27:182
2305209910199,2cyclictest2579219-21snmpd23:59:081
2305209910199,1cyclictest2579219-21snmpd19:22:431
230520991010,99cyclictest0-21swapper/120:32:361
230520991010,101cyclictest0-21swapper/122:26:271
230520991010,101cyclictest0-21swapper/122:01:481
230520991010,100cyclictest0-21swapper/120:20:061
230520991010,0cyclictest0-21swapper/120:05:471
2305159910199,2cyclictest2579219-21snmpd21:43:000
2305159910199,2cyclictest2579219-21snmpd21:39:540
230515991010,100cyclictest0-21swapper/019:50:130
2305439910099,1cyclictest0-21swapper/721:49:597
230543991000,99cyclictest0-21swapper/723:10:577
230543991000,99cyclictest0-21swapper/723:07:087
230543991000,99cyclictest0-21swapper/700:08:447
230543991000,100cyclictest0-21swapper/721:10:537
2305399910099,1cyclictest2579219-21snmpd22:18:426
2305399910098,2cyclictest2579219-21snmpd00:27:576
230539991000,99cyclictest0-21swapper/623:56:046
230539991000,100cyclictest0-21swapper/620:50:306
230539991000,100cyclictest0-21swapper/600:17:266
230539991000,100cyclictest0-21swapper/600:17:266
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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