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2025-02-06 - 14:21

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 Thu Feb 06, 2025 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
728627472,0sleep20-21swapper/206:45:302
1244525958,0sleep00-21swapper/006:46:360
1251324130,0sleep30-21swapper/306:47:233
1251623324,0sleep10-21swapper/106:47:251
128299999,0cyclictest0-21swapper/008:51:280
339960,0migration/331532-21sh09:13:323
339960,0migration/322867-21pmu-power08:15:343
339960,0migration/316716-21kernelversion11:10:303
28415060,0irq/27-eth0-tx-6372-21iceccd10:52:002
28415060,0irq/27-eth0-tx-5079-21telnet08:30:300
28415060,0irq/27-eth0-tx-3775-21ssh10:35:072
28415060,0irq/27-eth0-tx-25286-21munin-node11:40:312
28415060,0irq/27-eth0-tx-0-21swapper/211:47:532
28415060,0irq/27-eth0-tx-0-21swapper/211:35:442
28415060,0irq/27-eth0-tx-0-21swapper/211:32:052
28415060,0irq/27-eth0-tx-0-21swapper/211:23:042
28415060,0irq/27-eth0-tx-0-21swapper/211:13:252
28415060,0irq/27-eth0-tx-0-21swapper/210:41:422
28415060,0irq/27-eth0-tx-0-21swapper/210:24:512
28415060,0irq/27-eth0-tx-0-21swapper/210:10:512
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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