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2024-10-10 - 21:31

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

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 rackeslot3s.osadl.org (updated Thu Oct 10, 2024 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3457033997016,14cyclictest3473854-21systemd-run12:35:011
3457033996620,15cyclictest3470297-21latency_hist11:25:021
3457033996620,15cyclictest3470297-21latency_hist11:25:011
3457033996614,16cyclictest3462012-21sed08:45:021
3457033996614,14cyclictest3461399-21systemd-run08:35:001
3457033996428,6cyclictest3465547-21munin-run09:55:001
3457033996417,19cyclictest3458939-21latency_hist07:45:021
3457033996313,14cyclictest3465943-21date10:00:021
3457033996313,14cyclictest3465943-21date10:00:021
3457033996210,19cyclictest3459956-21cut08:05:021
3457033996210,19cyclictest3459956-21cut08:05:021
3457033996113,16cyclictest3469508-21sed11:10:021
3457033996113,16cyclictest3469508-21sed11:10:011
3457033996113,16cyclictest3466913-21cut10:20:011
3457028996157,2cyclictest0-21swapper/007:35:020
3457033996017,14cyclictest3461741-21date08:40:021
3457028996056,2cyclictest0-21swapper/011:35:030
3457028996056,2cyclictest0-21swapper/011:35:030
3457033995910,15cyclictest3471452-21date11:45:021
3457033995812,15cyclictest3471777-21munin-run11:55:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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