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2026-04-28 - 01:37

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 100 highest latencies:
System rack0slot5s.osadl.org (updated Tue Apr 28, 2026 00:45:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38412852347326,13sleep80-21swapper/814
38412202345319,17sleep140-21swapper/146
38414612343317,17sleep20-21swapper/28
38413462343319,15sleep130-21swapper/135
38412842343317,17sleep70-21swapper/713
38412292343317,17sleep60-21swapper/612
38412262343317,16sleep30-21swapper/39
38411822343319,16sleep120-21swapper/124
38411692343320,15sleep40-21swapper/410
38413192342317,17sleep50-21swapper/511
38414342337311,17sleep100-21swapper/102
38413782337311,17sleep110-21swapper/113
38411852337312,16sleep150-21swapper/157
38413332336311,16sleep00-21swapper/00
38412492335311,16sleep90-21swapper/915
38412602331306,16sleep10-21swapper/11
3841856993434,0cyclictest0-21swapper/915
3841862993227,4cyclictest1608-21snmpd3
3841829993130,1cyclictest0-21swapper/28
3841862993030,0cyclictest0-21swapper/113
3841862993026,4cyclictest1608-21snmpd3
3841866992926,2cyclictest1608-21snmpd4
3841851992926,2cyclictest1608-21snmpd14
3841877992827,1cyclictest1608-21snmpd7
384187799280,27cyclictest0-21swapper/157
384187799280,27cyclictest0-21swapper/157
3841873992828,0cyclictest0-21swapper/146
384187399280,27cyclictest0-21swapper/146
384187399280,27cyclictest0-21swapper/146
384187099280,27cyclictest0-21swapper/135
384185999280,27cyclictest0-21swapper/102
384185699280,27cyclictest0-21swapper/915
384185199280,27cyclictest0-21swapper/814
384185199280,27cyclictest0-21swapper/814
384185199280,27cyclictest0-21swapper/814
3841848992827,1cyclictest1608-21snmpd13
3841848992827,1cyclictest1608-21snmpd13
384184199280,27cyclictest0-21swapper/511
384183799280,27cyclictest0-21swapper/410
384183799280,27cyclictest0-21swapper/410
384183799280,27cyclictest0-21swapper/410
384183799280,27cyclictest0-21swapper/410
3841832992827,1cyclictest1608-21snmpd9
384183299280,27cyclictest0-21swapper/39
384183299280,27cyclictest0-21swapper/39
384182999280,27cyclictest0-21swapper/28
384182999280,27cyclictest0-21swapper/28
384182999280,27cyclictest0-21swapper/28
384182999280,27cyclictest0-21swapper/28
384182999280,27cyclictest0-21swapper/28
384182299280,27cyclictest0-21swapper/00
3841877992726,1cyclictest1608-21snmpd7
3841873992725,1cyclictest1608-21snmpd6
3841870992726,1cyclictest0-21swapper/135
384187099270,27cyclictest0-21swapper/135
384187099270,27cyclictest0-21swapper/135
384186699270,27cyclictest0-21swapper/124
3841862992726,1cyclictest1608-21snmpd3
3841859992726,1cyclictest0-21swapper/102
3841859992725,1cyclictest1608-21snmpd2
384185999270,26cyclictest0-21swapper/102
384185999270,1cyclictest0-21swapper/102
384185999270,1cyclictest0-21swapper/102
3841856992726,1cyclictest1608-21snmpd15
3841856992726,1cyclictest1608-21snmpd15
3841856992726,1cyclictest1608-21snmpd15
3841851992726,1cyclictest1608-21snmpd14
3841851992726,1cyclictest1608-21snmpd14
3841848992726,1cyclictest1608-21snmpd13
3841848992726,1cyclictest0-21swapper/713
384184399270,27cyclictest0-21swapper/612
384184399270,27cyclictest0-21swapper/612
384184399270,1cyclictest0-21swapper/612
3841841992726,1cyclictest1608-21snmpd11
3841841992726,1cyclictest1608-21snmpd11
3841841992726,1cyclictest0-21swapper/511
3841841992726,1cyclictest0-21swapper/511
384184199270,1cyclictest0-21swapper/511
3841837992726,1cyclictest0-21swapper/410
3841837992726,1cyclictest0-21swapper/410
384183799270,1cyclictest0-21swapper/410
3841832992726,1cyclictest1608-21snmpd9
3841829992725,1cyclictest1608-21snmpd8
3841829992725,1cyclictest1608-21snmpd8
384182999270,1cyclictest0-21swapper/28
3841824992726,1cyclictest0-21swapper/11
3841822992726,1cyclictest1608-21snmpd0
3841870992625,1cyclictest1608-21snmpd5
3841870992625,1cyclictest1608-21snmpd5
3841866992626,0cyclictest0-21swapper/124
3841866992625,1cyclictest0-21swapper/124
3841862992625,1cyclictest1608-21snmpd3
3841862992625,1cyclictest1608-21snmpd3
3841859992625,1cyclictest0-21swapper/102
3841856992625,1cyclictest1608-21snmpd15
3841856992625,1cyclictest0-21swapper/915
3841851992625,1cyclictest0-21swapper/814
3841848992625,1cyclictest0-21swapper/713
3841843992625,1cyclictest1608-21snmpd12
3841843992625,1cyclictest1608-21snmpd12
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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