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2025-11-28 - 21:16

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 28, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3245221210,0chrt32171-21kworker/u2:107:08:250
81850840,0irq/46-4a10000030701-21ssh09:35:070
81850800,0irq/46-4a1000006922-21ssh09:53:400
81850800,0irq/46-4a10000015605-21ssh12:29:520
192262808,0sleep019240-21ssh11:28:270
81950790,0irq/47-4a10000025190-21kworker/u2:207:20:000
81950790,0irq/47-4a10000010724-21diskmemload11:10:050
81850790,0irq/46-4a1000003942-21ssh10:55:280
81850790,0irq/46-4a10000030832-21ssh11:53:070
81850790,0irq/46-4a10000028240-21ssh10:38:400
81850790,0irq/46-4a10000018572-21ssh12:36:010
81850790,0irq/46-4a10000015884-21ssh12:30:140
81850790,0irq/46-4a10000010703-21ssh10:01:280
81950780,0irq/47-4a1000008239-21apt07:59:510
81950780,0irq/47-4a1000001130-21munin-run10:49:590
81850780,0irq/46-4a1000006576-21ssh12:10:260
81850780,0irq/46-4a10000028315-21ssh11:47:430
81850780,0irq/46-4a10000020319-21sh09:13:240
81850780,0irq/46-4a10000015175-21ssh10:11:010
81950770,0irq/47-4a1000005097-21idleruntime-cro09:49:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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