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2025-04-02 - 05:19

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 20 highest latencies:
System rackfslot7s.osadl.org (updated Wed Apr 02, 2025 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
87248099295112,2936cyclictest917446-21kworker/2:1+events21:40:182
87248299280612,2789cyclictest870336-21kworker/3:2+events20:00:133
87247599274412,2729cyclictest930663-21kworker/1:1+events22:30:161
87247299268613,2669cyclictest930605-21kworker/0:1+events23:30:120
87247599261912,2603cyclictest890593-21kworker/1:0+events20:10:101
87248299260112,2586cyclictest939332-21kworker/3:2+events23:20:243
8724759925476,2538cyclictest899425-21kworker/1:2+events20:45:201
87247599245512,2439cyclictest875800-21kworker/1:0+events19:25:171
87248299245212,2436cyclictest948448-21kworker/3:1+events23:44:383
87248299244511,2426cyclictest896044-21kworker/3:2+events20:32:413
87248299243812,2423cyclictest870336-21kworker/3:2+events19:36:203
87247599242812,2412cyclictest910274-21kworker/1:1+events21:15:151
87248299242612,2410cyclictest896044-21kworker/3:2+events20:38:253
8724829924128,2399cyclictest870336-21kworker/3:2+events19:20:193
87247299241012,2395cyclictest917566-21kworker/0:0+events21:50:150
87247299240512,2389cyclictest925571-21kworker/0:2+events22:25:190
87247599239210,2379cyclictest881782-21kworker/1:1+events19:46:201
87248099238812,2372cyclictest905528-21kworker/2:0+events21:03:042
87248099234112,2325cyclictest898143-21kworker/2:0+events20:41:282
87247599226411,2250cyclictest899425-21kworker/1:2+events20:40:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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