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2025-05-05 - 00:42

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #2

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 rack1slot2s.osadl.org (updated Sun May 04, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
291350450,0irq/25-eth10-21swapper/306:42:343
1942923423,0sleep00-21swapper/006:44:450
1941223323,0sleep10-21swapper/106:44:341
1947722925,0sleep20-21swapper/206:45:232
249970,0watchdog/222061-21irqrtprio07:12:252
339960,0migration/323832-21kthreadcore06:47:263
339960,0migration/321655-21sh10:56:113
339960,0migration/320871-21sh11:13:193
339960,0migration/311381-21dump-pmu-power08:42:063
28415060,0irq/27-eth0-tx-8155-21ssh09:19:452
28415060,0irq/27-eth0-tx-5423-21ssh12:03:102
28415060,0irq/27-eth0-tx-5321-21ssh10:44:012
28415060,0irq/27-eth0-tx-28537-21munin-node07:42:250
28415060,0irq/27-eth0-tx-0-21swapper/212:09:342
28415060,0irq/27-eth0-tx-0-21swapper/211:54:042
28415060,0irq/27-eth0-tx-0-21swapper/211:42:092
28415060,0irq/27-eth0-tx-0-21swapper/211:41:582
28415060,0irq/27-eth0-tx-0-21swapper/211:32:262
28415060,0irq/27-eth0-tx-0-21swapper/211:29:102
28415060,0irq/27-eth0-tx-0-21swapper/211:19:222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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