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2026-06-18 - 13:50

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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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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 50 highest latencies:
System rack4slot1s.osadl.org (updated Thu Jun 18, 2026 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
162942950,3sleep20-21swapper/211:18:152
162942950,3sleep20-21swapper/211:18:152
191892910,3sleep30-21swapper/309:58:203
191892910,3sleep30-21swapper/309:58:203
191892910,3sleep30-21swapper/309:58:203
175152860,3chrt0-21swapper/311:23:063
175152860,3chrt0-21swapper/311:23:063
108622800,3sleep30-21swapper/308:13:003
108622800,3sleep30-21swapper/308:13:003
108622800,3sleep30-21swapper/308:13:003
178362780,1chrt0-21swapper/008:28:200
178362780,1chrt0-21swapper/008:28:200
61902730,3sleep30-21swapper/310:53:073
61902730,3sleep30-21swapper/310:53:073
61902730,3sleep30-21swapper/310:53:073
4252730,4sleep0426-21kernelversion12:03:110
4252730,4sleep0426-21kernelversion12:03:110
156602610,4sleep30-21swapper/311:18:083
156602610,4sleep30-21swapper/311:18:083
287412520,3sleep30-21swapper/311:53:093
287412520,3sleep30-21swapper/311:53:093
173512520,3sleep30-21swapper/311:23:023
173512520,3sleep30-21swapper/311:23:023
78942490,3sleep20-21swapper/210:58:022
78942490,3sleep20-21swapper/210:58:022
316512490,2chrt31655-21sed11:58:181
316512490,2chrt31655-21sed11:58:181
185062480,3sleep30-21swapper/308:33:063
185062480,3sleep30-21swapper/308:33:063
39052470,2sleep03907-21idleruntime07:53:110
39052470,2sleep03907-21idleruntime07:53:110
39052470,2sleep03907-21idleruntime07:53:110
34782420,2chrt0-21swapper/307:53:063
34782420,2chrt0-21swapper/307:53:063
34782420,2chrt0-21swapper/307:53:063
291452420,2sleep30-21swapper/311:53:133
291452420,2sleep30-21swapper/311:53:133
307912410,7sleep030754-21gltestperf11:58:090
307912410,7sleep030754-21gltestperf11:58:090
295252410,3chrt0-21swapper/310:28:113
295252410,3chrt0-21swapper/310:28:113
253552390,3sleep30-21swapper/310:18:033
253552390,3sleep30-21swapper/310:18:033
54992380,3sleep30-21swapper/307:58:093
54992380,3sleep30-21swapper/307:58:093
21266993627,7cyclictest11733-21netstat08:13:141
21266993627,7cyclictest11733-21netstat08:13:141
21265993627,7cyclictest27411-21processes07:28:180
21265993627,7cyclictest27411-21processes07:28:180
21265993627,7cyclictest13923-21cut11:13:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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