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2025-11-21 - 20:43

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

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.

Total number of samples: 50 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 rack9slot8s.osadl.org (updated Fri Nov 21, 2025 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501540,0irq/47-4a10000032609-21runrttasks07:05:180
81950870,0irq/47-4a1000009906-21ssh12:16:120
81950860,0irq/47-4a10000025779-21ssh10:31:380
81850850,0irq/46-4a10000027309-21ssh09:26:290
81950830,0irq/47-4a1000003469-21ssh12:02:320
81950830,0irq/47-4a10000032302-21ssh11:54:590
81950830,0irq/47-4a10000020725-21runrttasks12:39:220
81950830,0irq/47-4a10000020382-21kworker/u2:309:37:110
81850830,0irq/46-4a10000021535-21ssh11:31:430
81850830,0irq/46-4a10000018826-21ssh10:17:020
81850830,0irq/46-4a10000013218-21ssh10:05:080
81950820,0irq/47-4a10000032075-21idleruntime-cro10:44:580
81950820,0irq/47-4a1000002656-21kworker/u2:210:54:310
81950820,0irq/47-4a10000024915-21rm11:39:070
81950820,0irq/47-4a10000017589-21rm12:32:350
81850820,0irq/46-4a1000009184-21ssh11:05:130
81850820,0irq/46-4a1000004033-21ssh09:45:470
81950810,0irq/47-4a10000016055-21runrttasks10:11:090
81950810,0irq/47-4a10000012039-21ssh10:02:450
81850810,0irq/46-4a1000001748-21ssh10:49:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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