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2025-04-02 - 04:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #4

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 20 highest latencies:
System rack8slot4s.osadl.org (updated Wed Apr 02, 2025 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22981862232166,21sleep60-21swapper/619:07:246
22982192229167,21sleep10-21swapper/119:07:511
22981912224187,24sleep20-21swapper/219:07:282
22980992223186,24sleep30-21swapper/319:06:083
22981782218183,23sleep70-21swapper/719:07:177
22982312215160,17sleep40-21swapper/419:08:024
22981962212173,24sleep50-21swapper/519:07:315
22981442208174,22sleep00-21swapper/019:06:460
229861499300,17cyclictest0-21swapper/723:09:347
229859799280,1cyclictest2364453-21apt-get21:10:151
2298608992621,5cyclictest0-21swapper/519:40:005
2298601992624,1cyclictest0-21swapper/223:20:002
229860199260,25cyclictest2411404-21awk22:50:002
229860199260,25cyclictest2389136-21idleruntime-cro22:00:002
229859799260,25cyclictest0-21swapper/122:20:121
229859799260,25cyclictest0-21swapper/119:20:001
2298614992523,1cyclictest0-21swapper/722:50:007
229860899250,22cyclictest2346918-21idleruntime-cro20:40:005
229860899250,22cyclictest2346918-21idleruntime-cro20:40:005
229861499240,1cyclictest2417084-21idleruntime-cro23:00:007
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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