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2024-07-27 - 06:37

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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 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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackeslot6s.osadl.org (updated Sat Jul 27, 2024 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2201051991336,15cyclictest2247861-21kworker/u8:2+ext4-rsv-conversion23:50:012
220104699961,90cyclictest0-21swapper/022:30:010
2201046998177,2cyclictest0-21swapper/019:55:000
2201048996928,32cyclictest0-21swapper/122:55:301
2201048996820,40cyclictest0-21swapper/121:00:291
2201048996433,26cyclictest0-21swapper/123:30:311
2201048996235,22cyclictest0-21swapper/100:30:241
2201048996217,39cyclictest1768-21snmpd22:06:171
220104699625,13cyclictest21450irq/209-8000000.ethernet23:05:020
2201046996155,3cyclictest0-21swapper/023:35:090
2201048995911,39cyclictest0-21swapper/100:10:301
2201051995831,5cyclictest0-21swapper/222:55:012
2201046995835,17cyclictest25550irq/422-mmc122:15:010
220105199573,17cyclictest0-21swapper/223:35:022
220104899576,42cyclictest0-21swapper/120:00:211
2201048995715,32cyclictest0-21swapper/119:35:271
220104899571,2cyclictest0-21swapper/121:05:101
2201048995618,29cyclictest0-21swapper/120:30:301
220104899553,45cyclictest2224986-21grep21:25:391
2201048995532,18cyclictest0-21swapper/100:25:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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