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2026-07-09 - 16:21

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 Jul 09, 2026 00:45:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26562242350306,33sleep60-21swapper/612
26561762350305,18sleep10-21swapper/11
26561882346337,6sleep130-21swapper/135
26565212343319,16sleep20-21swapper/28
26561342343316,17sleep150-21swapper/157
26562722341315,17sleep70-21swapper/713
26565162339314,15sleep140-21swapper/146
26562562339296,16sleep90-21swapper/915
26564932338313,16sleep110-21swapper/113
26561422338313,16sleep40-21swapper/410
26562592337312,16sleep120-21swapper/124
26563882335309,17sleep30-21swapper/39
26562282335309,17sleep100-21swapper/102
26564802334308,17sleep00-21swapper/00
26564532334309,16sleep80-21swapper/814
26563082334310,15sleep50-21swapper/511
265691999360,11cyclictest0-21swapper/135
2656922993232,0cyclictest0-21swapper/146
265691999328,11cyclictest0-21swapper/135
2656880993232,0cyclictest0-21swapper/39
265691999306,14cyclictest0-21swapper/135
2656919993025,4cyclictest1612-21snmpd5
2656907993026,4cyclictest1612-21snmpd2
2656883993027,3cyclictest1612-21snmpd10
2656904992927,1cyclictest1612-21snmpd15
265690099292,27cyclictest0-21swapper/814
265692599280,27cyclictest0-21swapper/157
265692599280,27cyclictest0-21swapper/157
265692599280,27cyclictest0-21swapper/157
265692599280,27cyclictest0-21swapper/157
265692599280,27cyclictest0-21swapper/157
2656922992825,2cyclictest1612-21snmpd6
265691999280,27cyclictest0-21swapper/135
265691999280,27cyclictest0-21swapper/135
265691499280,27cyclictest0-21swapper/124
265691499280,27cyclictest0-21swapper/124
2656911992827,1cyclictest1612-21snmpd3
265690499280,27cyclictest0-21swapper/915
265690499280,1cyclictest0-21swapper/915
2656896992827,1cyclictest1612-21snmpd13
265689199280,27cyclictest0-21swapper/612
2656880992827,1cyclictest1612-21snmpd9
265688099280,27cyclictest0-21swapper/39
265688099280,27cyclictest0-21swapper/39
2656876992827,1cyclictest0-21swapper/28
265687699280,27cyclictest0-21swapper/28
265687699280,27cyclictest0-21swapper/28
265692599270,26cyclictest0-21swapper/157
265692599270,1cyclictest0-21swapper/157
265692599270,1cyclictest0-21swapper/157
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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