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2024-10-09 - 05:47

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 rack9slot4s (updated Wed Oct 09, 2024 00:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
214479912852,1264cyclictest21869-21df19:25:130
214489912541240,11cyclictest0-21swapper/119:25:121
213552618570,33sleep00-21swapper/019:24:360
213902578531,32sleep10-21swapper/119:24:591
2099321060,7sleep12144899cyclictest23:40:001
172852900,7sleep12144899cyclictest22:01:591
321292500,8sleep12144899cyclictest19:50:171
74612420,4sleep041ktimersoftd/021:35:290
21447993820,6cyclictest3-21ksoftirqd/020:55:130
182042381,33sleep118231-21hddtemp_smartct22:05:161
260582370,10sleep12144899cyclictest22:25:241
2144799368,14cyclictest6204-21gdbus21:19:020
40322351,30sleep04054-21sleep22:54:590
322402341,4sleep032241-21cron22:41:000
289002340,3sleep10-21swapper/121:06:441
2144799343,16cyclictest26448-21perl19:35:160
21447993419,5cyclictest3-21ksoftirqd/019:32:460
21447993413,7cyclictest17216-21cron23:30:000
2144799332,15cyclictest1975-21users21:20:270
2144799331,4cyclictest81rcu_preempt20:16:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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