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2026-09-03 - 19:59

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 Thu Sep 03, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2602695995240,8cyclictest391ktimers/307:10:123
2602694994936,8cyclictest2609654-21grep07:25:272
2602694994840,6cyclictest2694205-21kworker/u8:1+events_unbound11:35:552
2602693994840,4cyclictest2632464-21munin-plugin-st08:35:011
2602692994843,3cyclictest0-21swapper/008:40:130
2602694994737,6cyclictest2685353-21grep11:05:252
2602693994634,9cyclictest231ktimers/110:25:111
2602694994538,5cyclictest2638899-21kworker/u8:2+events_unbound09:15:352
2602694994526,5cyclictest131rcu_preempt09:51:392
2602693994524,17cyclictest0-21swapper/107:35:261
2602692994538,4cyclictest2696008-21munin-plugin-st11:40:000
2602694994436,6cyclictest2704674-21kworker/u8:2+events_unbound12:10:582
2602693994433,7cyclictest2625211-21grep08:10:251
2602693994429,10cyclictest2640557-21grep08:55:251
260269399442,10cyclictest2690415-21grep11:20:251
2602694994334,7cyclictest2680392-21kworker/u8:0+events_unbound10:55:492
2602693994332,7cyclictest2648018-21sh09:20:011
2602693994330,8cyclictest2633715-21grep08:35:251
260269399431,12cyclictest2699868-21apt-get11:50:151
260269399431,12cyclictest2689181-21sh11:20:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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