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2024-04-20 - 00:39

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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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 50 highest latencies:
System rackeslot3s.osadl.org (updated Fri Apr 19, 2024 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
397620899120116,2cyclictest0-21swapper/010:20:010
397620899112108,2cyclictest0-21swapper/008:25:030
397620899112108,2cyclictest0-21swapper/008:25:020
397620899106101,3cyclictest0-21swapper/008:50:020
39762089910197,2cyclictest0-21swapper/008:25:020
3976208998580,3cyclictest0-21swapper/009:20:010
397621599824,8cyclictest131rcu_preempt10:35:011
3976217998017,34cyclictest131rcu_preempt09:10:022
3976208997974,3cyclictest0-21swapper/009:50:010
3976215997551,21cyclictest23-21ksoftirqd/109:55:011
397620899698,46cyclictest151rcuc/007:35:020
397620899681,63cyclictest0-21swapper/011:15:010
397622199674,37cyclictest3982396-21kworker/u8:109:30:023
3976221996719,11cyclictest37-21ksoftirqd/309:55:013
3976208996716,14cyclictest12-21ksoftirqd/011:45:010
397620899627,8cyclictest12-21ksoftirqd/007:15:020
397620899627,8cyclictest12-21ksoftirqd/007:15:010
3976208996155,4cyclictest0-21swapper/012:15:010
3976221996012,9cyclictest37-21ksoftirqd/309:25:013
3976208996010,31cyclictest0-21swapper/010:42:510
3976221995918,8cyclictest37-21ksoftirqd/312:14:593
3976208995914,13cyclictest12-21ksoftirqd/012:25:020
3976208995811,9cyclictest12-21ksoftirqd/010:55:020
397622199574,30cyclictest361rcuc/307:35:023
397620899573,13cyclictest12-21ksoftirqd/007:45:020
397620899573,13cyclictest12-21ksoftirqd/007:45:010
3976208995710,11cyclictest12-21ksoftirqd/011:25:010
3976221995639,13cyclictest1-21systemd09:20:003
397620899565,9cyclictest12-21ksoftirqd/007:55:010
397620899564,49cyclictest0-21swapper/012:30:010
3976208995642,10cyclictest235-21systemd-journal09:40:000
397622199553,16cyclictest37-21ksoftirqd/312:35:023
397622199551,6cyclictest0-21swapper/311:30:013
397620899559,12cyclictest12-21ksoftirqd/012:10:020
3976208995551,2cyclictest0-21swapper/007:55:030
3976208995551,2cyclictest0-21swapper/007:55:020
3976208995516,10cyclictest12-21ksoftirqd/007:10:010
397620899548,11cyclictest12-21ksoftirqd/011:05:010
397620899547,9cyclictest12-21ksoftirqd/011:50:020
397620899547,9cyclictest12-21ksoftirqd/011:50:010
397620899546,6cyclictest12-21ksoftirqd/008:45:020
397620899544,9cyclictest12-21ksoftirqd/010:50:000
3976208995423,11cyclictest12-21ksoftirqd/008:55:000
397622199536,8cyclictest37-21ksoftirqd/308:10:003
397622199536,8cyclictest37-21ksoftirqd/307:45:003
397622199536,8cyclictest37-21ksoftirqd/307:45:003
397622199536,11cyclictest37-21ksoftirqd/308:45:023
397622199531,13cyclictest37-21ksoftirqd/308:30:003
397622199531,13cyclictest37-21ksoftirqd/308:30:003
3976217995345,5cyclictest3955348-21kworker/2:107:15:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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