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2026-06-30 - 19:33

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 Tue Jun 30, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
77121420,2sleep30-21swapper/307:33:313
77121420,2sleep30-21swapper/307:33:313
77121420,2sleep30-21swapper/307:33:313
1326621380,2sleep20-21swapper/208:08:232
1326621380,2sleep20-21swapper/208:08:232
169921360,3sleep30-21swapper/309:03:283
169921360,3sleep30-21swapper/309:03:283
169921360,3sleep30-21swapper/309:03:283
1145021310,3sleep20-21swapper/212:23:222
1145021310,3sleep20-21swapper/212:23:222
1145021310,3sleep20-21swapper/212:23:222
1492021280,2sleep30-21swapper/308:13:193
1492021280,2sleep30-21swapper/308:13:193
1492021280,2sleep30-21swapper/308:13:193
1979121270,3sleep30-21swapper/309:53:213
1979121270,3sleep30-21swapper/309:53:213
652321130,3sleep20-21swapper/207:48:422
652321130,3sleep20-21swapper/207:48:422
1357421080,2chrt13571-21df_inode11:03:200
1357421080,2chrt13571-21df_inode11:03:200
231212940,2chrt23106-21gltestperf11:28:221
278432900,2chrt27842-21awk10:13:280
278432900,2chrt27842-21awk10:13:280
309512880,3sleep20-21swapper/211:48:252
309512880,3sleep20-21swapper/211:48:252
187782810,3sleep30-21swapper/312:43:213
187782810,3sleep30-21swapper/312:43:213
289982720,2sleep20-21swapper/210:18:202
289982720,2sleep20-21swapper/210:18:202
302052690,2sleep30-21swapper/307:28:203
302052690,2sleep30-21swapper/307:28:203
302052690,2sleep30-21swapper/307:28:203
46812670,3sleep30-21swapper/310:38:233
46812670,3sleep30-21swapper/310:38:233
46812670,3sleep30-21swapper/310:38:233
5682660,2sleep30-21swapper/310:28:223
5682660,2sleep30-21swapper/310:28:223
5682660,2sleep30-21swapper/310:28:223
152072640,3sleep20-21swapper/208:13:222
152072640,3sleep20-21swapper/208:13:222
152072640,3sleep20-21swapper/208:13:222
66962610,2chrt6693-21ntpq10:43:270
66962610,2chrt6693-21ntpq10:43:270
66962610,2chrt6693-21ntpq10:43:270
303342570,6sleep1281ktimers/111:48:201
303342570,6sleep1281ktimers/111:48:201
303342570,6sleep1281ktimers/111:48:201
235002550,3chrt23502-21needreboot11:28:261
235002550,3chrt23502-21needreboot11:28:261
235002550,3chrt23502-21needreboot11:28:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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