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2025-09-03 - 21:07

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 Sep 03, 2025 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
288795995344,5cyclictest353480-21grep10:15:163
288790995137,10cyclictest311ktimers/207:25:122
288781994840,4cyclictest340832-21apt-config09:40:010
288795994739,4cyclictest292747-21sendmail07:20:013
288786994523,13cyclictest313641-21kworker/u8:1+events_unbound08:33:091
288795994436,3cyclictest0-21swapper/310:00:003
288790994434,6cyclictest290002-21grep07:10:252
288790994434,6cyclictest290002-21grep07:10:252
288786994438,4cyclictest364975-21kworker/u8:2+events_unbound11:04:221
288786994335,5cyclictest323656-21idleruntime-cro08:50:011
288786994325,6cyclictest316499-21kworker/u8:0+events_unbound08:28:411
288786994325,6cyclictest316499-21kworker/u8:0+events_unbound08:28:411
288781994336,4cyclictest390812-21cron12:05:000
288795994234,4cyclictest0-21swapper/310:40:003
288790994235,4cyclictest337293-21sh09:30:002
288781994234,4cyclictest327047-21auditctl09:00:010
288790994133,5cyclictest363314-21auditctl10:44:592
288786994134,5cyclictest352865-21kworker/u8:0+events_unbound10:24:141
288795994029,7cyclictest366295-21grep10:50:233
288781994031,5cyclictest290417-21auditctl07:15:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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