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2025-07-02 - 07:05

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #7

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.
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.

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 10 highest latencies:
System rackfslot7s.osadl.org (updated Wed Jul 02, 2025 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
147134799278010,2766cyclictest1503736-21kworker/1:1+events20:50:171
147134799277015,2751cyclictest1528039-21kworker/1:0+events22:15:221
147134799274813,2732cyclictest1484266-21kworker/1:2+events19:55:201
147134099271413,2696cyclictest1575287-21kworker/0:2+events00:30:120
147135499264313,2626cyclictest1544233-21kworker/3:2+events23:00:213
147135499261812,2601cyclictest1554484-21kworker/3:0+events23:25:193
147134099253713,2521cyclictest1487381-21kworker/0:0+events20:00:170
14713479925354,2527cyclictest1505871-21kworker/1:2+events20:55:391
147134799253011,2516cyclictest1492382-21kworker/1:1+events20:20:551
147135499251912,2503cyclictest1502053-21kworker/3:1+events20:47:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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