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2022-07-07 - 00:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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 
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ARM Broadcom BCM2711 @1500 MHz, Linux 5.10.52-rt47-v7l (Profile)

Latency plot of shadow in rack #7, slot #4
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -n -a0-2 -p99 -i200 -h400 -t3 -q
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 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack7slot4s.osadl.org (updated Sat Jul 02, 2022 00:43:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1852799730,61cyclictest1361-21SchedProcessorL0
137266630,11EthcTask321rcuc/33
1853199602,23cyclictest19185-21ssh0
18531995911,13cyclictest12-21ksoftirqd/00
1853199547,13cyclictest12-21ksoftirqd/00
1853199542,19cyclictest1361-21SchedProcessorL0
1853199533,25cyclictest10137-21ssh0
1853199532,17cyclictest0-21swapper/00
1853199527,12cyclictest12-21ksoftirqd/00
1853199522,16cyclictest620-21systemd-logind0
18531995221,3cyclictest12-21ksoftirqd/00
18531995213,9cyclictest12-21ksoftirqd/00
1853199516,22cyclictest12-21ksoftirqd/00
1853199503,22cyclictest12-21ksoftirqd/00
1853199502,13cyclictest12-21ksoftirqd/00
1853199497,8cyclictest137094Schedule0
1853199496,10cyclictest1375-21OPCUAServerWork0
1853199492,12cyclictest26625-21ssh0
1853199491,4cyclictest143-21systemd-journal0
1853199471,3cyclictest20320-21cut0
1853199471,3cyclictest18675-21diskstats0
1853199462,17cyclictest32050-21sh0
1853199462,17cyclictest32050-21sh0
1854099450,3cyclictest29184-21grep0
1853199457,7cyclictest12-21ksoftirqd/00
1853199456,11cyclictest1361-21SchedProcessorL0
1853199454,19cyclictest12-21ksoftirqd/00
1853199452,19cyclictest1384-21CommCycleHook0
1853199451,19cyclictest137094Schedule0
18527994530,6cyclictest17576-21kworker/u8:40
1853199449,15cyclictest137094Schedule0
1853199449,15cyclictest137094Schedule0
137266440,11EthcTask321rcuc/33
1853199426,8cyclictest1375-21OPCUAServerWork0
1853199422,14cyclictest0-21swapper/00
18531994215,6cyclictest29972-21diskmemload0
1853199421,17cyclictest15324-21ssh0
1372664225,8EthcTask0-21swapper/33
137266400,8EthcTask321rcuc/33
18531993919,2cyclictest0-21swapper/00
18531993915,6cyclictest8045-21/usr/sbin/munin0
18531993911,5cyclictest137094Schedule0
1852799390,29cyclictest23046irq/40-dwc2_hso0
1372663923,10EthcTask1364-21SchedProcessorL3
1372663921,13EthcTask1364-21SchedProcessorL3
1372663910,14EthcTask0-21swapper/33
1854099381,2cyclictest544-21usb-storage0
1853199384,15cyclictest1375-21OPCUAServerWork0
18531993818,8cyclictest12-21ksoftirqd/00
18531993816,9cyclictest137094Schedule0
18531993813,12cyclictest31239-21cut0
1372663820,11EthcTask1364-21SchedProcessorL3
18540993712,8cyclictest1293-21Anybus0
18531993721,2cyclictest0-21swapper/00
137266378,12EthcTask0-21swapper/33
1372663724,7EthcTask0-21swapper/33
1372663721,9EthcTask1364-21SchedProcessorL3
1372663719,11EthcTask1364-21SchedProcessorL3
1370943721,4Schedule14404-21cut0
1854099360,2cyclictest23046irq/40-dwc2_hso0
1853199365,12cyclictest1378-21OPCUAServerWork0
18531993618,3cyclictest30538-21fw_packets0
18531993615,5cyclictest137094Schedule0
18531993614,3cyclictest25456-21munin-run0
1372663616,13EthcTask1364-21SchedProcessorL3
137266360,7EthcTask321rcuc/33
137266360,7EthcTask321rcuc/33
1370943610,15Schedule1378-21OPCUAServerWork0
1853199358,10cyclictest137094Schedule0
1853199353,10cyclictest0-21swapper/00
1853199351,4cyclictest26162-21ps0
18527993527,5cyclictest22246irq/40-fe9800000
1372663518,9EthcTask0-21swapper/33
137266350,9EthcTask321rcuc/33
137266350,9EthcTask321rcuc/33
137266350,5EthcTask321rcuc/33
1853199349,10cyclictest137094Schedule0
1853199342,17cyclictest0-21swapper/00
1853199342,17cyclictest0-21swapper/00
18531993415,3cyclictest12-21ksoftirqd/00
18531993413,7cyclictest137094Schedule0
1853199340,2cyclictest0-21swapper/00
1372663419,9EthcTask1364-21SchedProcessorL3
137266340,4EthcTask321rcuc/33
137266340,11EthcTask321rcuc/33
137266340,11EthcTask321rcuc/33
1853199334,15cyclictest0-21swapper/00
137266338,14EthcTask0-21swapper/33
137266337,11EthcTask0-21swapper/33
137266335,9EthcTask0-21swapper/33
137266335,13EthcTask0-21swapper/33
137266335,12EthcTask0-21swapper/33
137266330,9EthcTask321rcuc/33
137266330,5EthcTask321rcuc/33
137266326,8EthcTask0-21swapper/33
137266320,6EthcTask321rcuc/33
137266320,6EthcTask321rcuc/33
1853199315,16cyclictest1293-21Anybus0
137266318,11EthcTask0-21swapper/33
137266318,10EthcTask0-21swapper/33
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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