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2025-09-19 - 05:28

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, 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 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: 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 rack2slot7s.osadl.org (updated Fri Sep 19, 2025 00:40:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1854968997061,5cyclictest0-21swapper/221:58:362
1854968995630,22cyclictest421-21avahi-daemon22:40:022
1854966995634,4cyclictest2003392-21if_eth023:53:310
1854966995634,4cyclictest2003392-21if_eth023:53:310
185496799543,40cyclictest1934104-21ssh22:13:381
185496799543,40cyclictest1934104-21ssh22:13:381
185496799536,35cyclictest2024245-21ssh00:23:471
185496799536,35cyclictest2024245-21ssh00:23:471
1854968995242,5cyclictest0-21swapper/200:18:452
1854968995242,5cyclictest0-21swapper/200:18:452
1854968995234,14cyclictest1928591-21latency_hist22:05:032
1854968995127,21cyclictest1911217-21run-parts21:40:012
1854967995039,7cyclictest0-21swapper/122:53:391
1854968994941,4cyclictest0-21swapper/223:08:352
1854968994921,25cyclictest1857844-21tail19:18:492
1854967994939,6cyclictest433-21polkitd22:18:441
1854967994939,4cyclictest0-21swapper/100:28:451
1854967994840,4cyclictest0-21swapper/122:58:341
1854966994836,9cyclictest0-21swapper/023:20:010
1854968994637,6cyclictest959-21mta-sts-daemon21:28:442
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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