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2026-06-12 - 06:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #3

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 rack0slot3s.osadl.org (updated Fri Jun 12, 2026 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
524842272210,17sleep50-21swapper/519:09:215
523012265216,17sleep10-21swapper/119:06:521
522032264216,17sleep20-21swapper/219:05:402
524032259216,33sleep30-21swapper/319:08:153
522052257206,17sleep40-21swapper/419:05:424
522092246221,16sleep70-21swapper/719:05:457
522732243219,16sleep60-21swapper/619:06:326
523912242218,16sleep00-21swapper/019:08:040
1139572330,0sleep40-21swapper/421:00:004
52861993127,3cyclictest134377-21cat21:35:165
5284099300,27cyclictest0-21swapper/023:48:590
52840992827,1cyclictest0-21swapper/023:10:240
5284099280,1cyclictest0-21swapper/023:20:230
5286599270,25cyclictest0-21swapper/621:08:286
5286199270,27cyclictest0-21swapper/522:20:155
5285799270,1cyclictest0-21swapper/423:48:594
52869992622,3cyclictest1390-21snmpd22:21:457
52865992622,3cyclictest1390-21snmpd00:18:126
5286599260,22cyclictest0-21swapper/623:33:016
52854992622,3cyclictest1390-21snmpd21:43:383
5284599261,23cyclictest0-21swapper/119:31:361
5284599260,24cyclictest0-21swapper/122:42:541
52869992521,3cyclictest1390-21snmpd20:37:117
52869992521,3cyclictest1390-21snmpd19:22:037
52865992521,3cyclictest1390-21snmpd19:11:186
52865992518,3cyclictest0-21swapper/622:08:086
5286599250,23cyclictest0-21swapper/623:48:056
5286599250,23cyclictest0-21swapper/623:00:426
52857992521,3cyclictest1390-21snmpd22:13:454
52857992521,3cyclictest1390-21snmpd21:36:144
52854992521,3cyclictest1390-21snmpd23:30:143
52849992521,3cyclictest1390-21snmpd23:35:442
52849992521,3cyclictest1390-21snmpd21:31:062
5284999250,1cyclictest0-21swapper/223:30:232
52845992521,3cyclictest1390-21snmpd22:10:211
52845992518,5cyclictest0-21swapper/120:52:361
5284599250,23cyclictest0-21swapper/120:32:171
5284599250,1cyclictest0-21swapper/119:40:151
52840992521,3cyclictest139867-21cat21:45:130
52865992421,2cyclictest1390-21snmpd19:21:186
52865992417,5cyclictest0-21swapper/620:11:026
52865992417,5cyclictest0-21swapper/620:11:016
5286599240,23cyclictest0-21swapper/620:48:216
5286599240,22cyclictest0-21swapper/619:50:316
52861992421,2cyclictest1390-21snmpd19:59:505
52861992420,3cyclictest203016-21cat23:40:165
5286199240,2cyclictest0-21swapper/521:45:195
52857992420,3cyclictest1390-21snmpd22:33:064
52854992422,1cyclictest1390-21snmpd20:44:153
52854992421,2cyclictest1390-21snmpd21:47:443
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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