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2025-10-21 - 22:35

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 Oct 21, 2025 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2777955995044,4cyclictest2875235-21kworker/u8:0+events_unbound12:25:571
2777955995042,4cyclictest2801090-21cron08:15:011
2777963994638,4cyclictest2887238-21sh12:25:012
2777963994533,8cyclictest2851218-21sendmail10:40:002
2777955994539,4cyclictest2866495-21kworker/u8:2+events_unbound11:25:441
2777955994329,10cyclictest231ktimers/110:30:121
2777963994235,4cyclictest2794059-21sh07:55:002
2777955994233,6cyclictest2845688-21unixbench_singl10:20:281
2777963994131,7cyclictest2818169-21grep09:00:272
2777955994130,8cyclictest2820276-21cron09:10:001
2777955994130,8cyclictest2820276-21cron09:10:001
2777953994135,4cyclictest2849129-21kworker/u8:0+events_unbound10:45:330
2777967994032,6cyclictest391ktimers/309:15:113
2777967993928,8cyclictest391ktimers/310:25:123
2777955993832,4cyclictest2807623-21kworker/u8:2+events_unbound08:45:041
277795599381,15cyclictest24-21ksoftirqd/111:55:091
2777953993830,5cyclictest2811552-21idleruntime-cro08:45:010
2777953993827,7cyclictest2850775-21grep10:35:280
2777963993726,8cyclictest311ktimers/212:25:162
2777955993728,6cyclictest2884192-21fschecks_count12:15:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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