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2026-01-08 - 02:07

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 Wed Jan 07, 2026 12:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20011052126111,10sleep60-21swapper/607:07:376
20010552126111,10sleep30-21swapper/307:06:533
20012592124109,10sleep10-21swapper/107:09:481
20010542122107,9sleep20-21swapper/207:06:522
20010502122107,10sleep70-21swapper/707:06:497
20012402120105,10sleep00-21swapper/007:09:310
20011152120105,10sleep50-21swapper/507:07:445
20010652120105,9sleep40-21swapper/407:07:024
20015079910599,3cyclictest2579219-21snmpd11:46:161
20015079910599,3cyclictest2579219-21snmpd11:46:161
20015079910499,2cyclictest2579219-21snmpd10:12:331
2001507991030,1cyclictest0-21swapper/111:00:151
20015239910299,3cyclictest2579219-21snmpd09:33:535
20015189910299,2cyclictest2579219-21snmpd10:44:464
20015169910299,3cyclictest2579219-21snmpd11:53:073
20015169910298,3cyclictest2579219-21snmpd08:30:333
20015079910299,3cyclictest2579219-21snmpd09:46:081
20015049910299,3cyclictest2579219-21snmpd09:10:400
2001531991010,99cyclictest0-21swapper/709:30:177
2001531991010,100cyclictest0-21swapper/712:15:287
2001531991010,100cyclictest0-21swapper/712:14:207
2001531991010,0cyclictest0-21swapper/709:46:207
2001526991010,100cyclictest0-21swapper/610:05:176
20015239910199,2cyclictest2579219-21snmpd09:02:195
20015239910198,3cyclictest2579219-21snmpd11:09:205
2001523991010,101cyclictest0-21swapper/507:59:535
2001518991010,99cyclictest0-21swapper/408:28:094
20015169910199,2cyclictest2579219-21snmpd07:26:573
20015169910199,1cyclictest593-21lldpd09:24:153
20015129910199,2cyclictest2579219-21snmpd09:45:562
20015079910199,2cyclictest2579219-21snmpd10:50:051
20015079910199,2cyclictest2579219-21snmpd09:44:021
20015079910198,3cyclictest2579219-21snmpd07:49:191
20015079910198,3cyclictest2579219-21snmpd07:49:191
2001507991010,100cyclictest0-21swapper/112:09:251
2001507991010,100cyclictest0-21swapper/107:44:161
2001507991010,100cyclictest0-21swapper/107:34:221
20015049910199,2cyclictest2579219-21snmpd11:31:210
2001504991010,99cyclictest0-21swapper/007:19:210
2001504991010,101cyclictest0-21swapper/011:42:120
20015319910099,1cyclictest0-21swapper/707:15:387
2001531991000,99cyclictest0-21swapper/711:35:517
2001531991000,99cyclictest0-21swapper/710:42:497
2001531991000,99cyclictest0-21swapper/710:15:427
2001531991000,99cyclictest0-21swapper/709:54:367
2001531991000,99cyclictest0-21swapper/709:12:437
2001531991000,99cyclictest0-21swapper/708:25:007
2001531991000,99cyclictest0-21swapper/707:43:287
20015269910099,1cyclictest2579219-21snmpd10:44:586
20015269910099,1cyclictest2579219-21snmpd10:27:336
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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