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2026-08-13 - 18:55

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #5

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 rack0slot5s.osadl.org (updated Thu Aug 13, 2026 00:45:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21464992367341,17sleep60-21swapper/612
21467092360353,4sleep20-21swapper/28
21467182348306,16sleep110-21swapper/113
21467212345318,17sleep140-21swapper/146
21467102345319,17sleep30-21swapper/39
21466492345319,17sleep150-21swapper/157
21467712344318,17sleep70-21swapper/713
21465432342317,17sleep40-21swapper/410
21468172341315,17sleep130-21swapper/135
21467552340317,15sleep100-21swapper/102
21466942338313,16sleep50-21swapper/511
21465132336311,16sleep120-21swapper/124
21467162335310,16sleep90-21swapper/915
21466602334308,17sleep80-21swapper/814
21464932334325,6sleep10-21swapper/11
21467072331307,16sleep00-21swapper/00
215235621120,0sleep50-21swapper/511
215235621120,0sleep50-21swapper/511
2147155993939,0cyclictest0-21swapper/39
2147155993939,0cyclictest0-21swapper/39
214719999327,14cyclictest0-21swapper/135
2147207993130,0cyclictest0-21swapper/157
2147207993130,0cyclictest0-21swapper/157
2147190993131,0cyclictest0-21swapper/113
2147190993131,0cyclictest0-21swapper/113
214714799310,30cyclictest0-21swapper/11
2147193993026,3cyclictest1612-21snmpd4
2147185993026,3cyclictest1612-21snmpd2
2147165993029,1cyclictest0-21swapper/511
2147147993026,4cyclictest1612-21snmpd1
214714799300,1cyclictest0-21swapper/11
2147193992926,3cyclictest1612-21snmpd4
214719399290,27cyclictest0-21swapper/124
214718599296,1cyclictest0-21swapper/102
214718599290,27cyclictest0-21swapper/102
2147178992927,1cyclictest0-21swapper/814
2147178992927,1cyclictest0-21swapper/814
214717399290,22cyclictest0-21swapper/713
214717399290,22cyclictest0-21swapper/713
2147150992927,1cyclictest1612-21snmpd8
2147207992827,1cyclictest1612-21snmpd7
2147204992826,1cyclictest1612-21snmpd6
214719999280,27cyclictest0-21swapper/135
2147193992827,1cyclictest1612-21snmpd4
2147193992827,1cyclictest1612-21snmpd4
214719399280,27cyclictest0-21swapper/124
2147190992827,1cyclictest1612-21snmpd3
2147190992827,1cyclictest0-21swapper/113
214717399280,27cyclictest0-21swapper/713
214717399280,27cyclictest0-21swapper/713
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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