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2026-05-06 - 15:59

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 Wed May 06, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1780763994233,6cyclictest1895078-21chrt12:35:250
1780763994233,6cyclictest1895078-21chrt12:35:250
1780763994229,8cyclictest1887010-21sh12:15:000
1780775994133,5cyclictest1780756-21cyclictest08:08:213
1780763994134,4cyclictest1876362-21cron11:45:010
1780763994134,4cyclictest1825875-21sendmail09:20:010
1780763994132,4cyclictest0-21swapper/010:10:010
1780775994032,4cyclictest1851849-21cron10:35:003
1780767994033,4cyclictest1843339-21latency_hist10:10:011
1780763994032,4cyclictest0-21swapper/009:55:000
1780775993931,4cyclictest0-21swapper/309:35:243
1780767993930,5cyclictest0-21swapper/110:35:001
1780767993929,7cyclictest1881692-21cut12:00:001
1780767993929,7cyclictest1805169-21auditctl08:20:011
1780767993928,8cyclictest1785989-21unixbench_singl07:20:261
1780771993830,4cyclictest0-21swapper/209:30:002
1780771993829,5cyclictest1785950-21grep07:20:252
1780763993832,3cyclictest1784697-21sh07:20:000
1780763993829,6cyclictest1786859-21grep07:25:150
1780775993729,5cyclictest1865718-21munin-plugin-st11:15:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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