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2024-11-23 - 17:37

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #0

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 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 r0s0s.osadl.org (updated Sat Nov 23, 2024 12:46:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10761242295260,27sleep60-21swapper/607:07:476
10762522294257,12sleep30-21swapper/307:09:373
10762512292256,13sleep20-21swapper/207:09:362
10760062288267,13sleep50-21swapper/507:06:095
10761972286267,12sleep40-21swapper/407:08:504
10762362285265,12sleep70-21swapper/707:09:257
10760492284265,12sleep10-21swapper/107:06:461
10760012284265,12sleep00-21swapper/007:06:040
111944523513,21sleep50-21swapper/508:37:275
1076753993529,5cyclictest833-21snmpd11:03:165
1076753993529,5cyclictest833-21snmpd11:03:155
1076753993529,5cyclictest833-21snmpd09:13:325
1076748993430,3cyclictest1202241-21cat11:35:150
1076755993330,2cyclictest833-21snmpd12:21:077
1076755993330,2cyclictest833-21snmpd07:26:447
1076754993330,2cyclictest833-21snmpd11:26:476
1076753993330,2cyclictest833-21snmpd12:17:125
1076753993330,2cyclictest833-21snmpd08:55:425
107675399330,32cyclictest0-21swapper/509:07:235
107675399330,30cyclictest0-21swapper/512:01:215
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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