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2026-08-04 - 17:26

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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 rackbslot5s.osadl.org (updated Tue Aug 04, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2480309995446,4cyclictest2487673-21munin-plugin-st07:30:002
2480309995446,4cyclictest2487673-21munin-plugin-st07:30:002
2480301994638,4cyclictest0-21swapper/011:40:010
2480309994534,7cyclictest2592567-21grep12:30:252
2480309994534,5cyclictest2494472-21kworker/u8:0+events_unbound07:54:052
2480306994538,5cyclictest2556676-21kworker/u8:1+events_unbound11:09:371
2480309994332,8cyclictest311ktimers/210:30:122
2480306994337,3cyclictest2501320-21munin-plugin-st08:10:011
2480314994134,4cyclictest2537559-21grep09:50:273
2480309994134,5cyclictest2592775-21kworker/u8:0+events_unbound12:39:462
2480309994133,4cyclictest2489355-21cron07:35:002
2480314994030,7cyclictest2491059-21sh07:40:013
2480309994033,5cyclictest2482769-21kworker/u8:3+events_unbound07:39:052
2480309994031,6cyclictest2573535-21unixbench_multi11:35:272
2480309994029,8cyclictest311ktimers/212:25:132
2480306994027,9cyclictest231ktimers/109:40:121
2480306994024,5cyclictest131rcu_preempt10:45:301
2480309993930,5cyclictest2529244-21ls09:30:012
248030999391,15cyclictest0-21swapper/209:10:152
2480306993830,6cyclictest231ktimers/109:30:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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