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2025-11-09 - 03:40

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 Sun Nov 09, 2025 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2030345995625,26cyclictest0-21swapper/121:45:021
2030345995323,26cyclictest0-21swapper/123:50:011
2030353995237,12cyclictest391ktimers/321:40:153
2030345995115,9cyclictest2035992-21cron19:25:011
2030345994820,4cyclictest0-21swapper/121:05:171
2030345994634,7cyclictest0-21swapper/123:05:271
2030345994434,6cyclictest2075386-21grep21:15:291
2030353994335,6cyclictest2107192-21kworker/u8:2+events_unbound23:28:413
2030353994335,6cyclictest2107192-21kworker/u8:2+events_unbound23:28:413
2030353994333,7cyclictest2034295-21sendmail19:20:003
2030350994331,8cyclictest2044530-21munin-plugin-st19:50:012
2030353994231,8cyclictest391ktimers/321:55:113
2030353994231,8cyclictest391ktimers/321:55:103
2030353994230,9cyclictest391ktimers/322:55:133
2030345994233,6cyclictest2134730-21munin-plugin-st00:10:001
2030345994231,6cyclictest2137888-21unixbench_multi00:15:261
2030353994134,5cyclictest2080687-21kworker/u8:1+events_unbound21:48:153
2030353994134,5cyclictest2080687-21kworker/u8:1+events_unbound21:48:153
2030353994134,5cyclictest2042799-21kworker/u8:2+events_unbound19:47:523
2030345994132,4cyclictest0-21swapper/100:30:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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