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2024-11-23 - 17:35

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #6

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 20 highest latencies:
System rack2slot6s.osadl.org (updated Mon Mar 09, 2020 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
159792346338,4sleep20-21swapper/219:33:542
162472319312,4sleep00-21swapper/019:37:220
162912218210,5sleep30-21swapper/319:37:573
162942211204,4sleep10-21swapper/119:37:591
172442660,5sleep21664299cyclictest23:13:362
7272630,2sleep10-21swapper/123:48:311
203822580,4sleep120384-21latency_hist23:23:141
309362480,2sleep30-21swapper/322:33:223
309362480,2sleep30-21swapper/322:33:223
16645992412,2cyclictest20037-21switchtime22:08:283
251382231,18sleep325135-21apt-get23:33:173
1664299231,19cyclictest0-21swapper/221:23:202
16640992316,6cyclictest29697-21kworker/1:000:32:141
16640992316,6cyclictest29697-21kworker/1:000:32:141
1664299220,19cyclictest0-21swapper/221:28:142
16637992216,3cyclictest31135-21grep23:43:320
243512210,16sleep00-21swapper/000:43:190
1664299217,12cyclictest0-21swapper/221:13:272
16642992115,3cyclictest2392-21grep01:03:352
16640992115,3cyclictest5236-21grep20:23:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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