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2023-06-06 - 04:51

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 highest latencies:
System rack7slot4s.osadl.org (updated Tue Jun 06, 2023 00:45:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
887799607,38cyclictest31237-21ssh23:30:200
886299532,32cyclictest13597-21ssh23:00:180
886299511,33cyclictest23453-21ssh23:45:180
886299511,25cyclictest25808-21ssh21:10:160
887799507,26cyclictest12-21ksoftirqd/021:00:150
886299461,24cyclictest4159-21sh00:35:190
886299461,22cyclictest15219-21ssh23:40:170
887799442,32cyclictest20102-21ssh22:05:180
887799404,28cyclictest5779-21ssh00:15:180
887799391,30cyclictest0-21swapper/022:50:170
886299397,16cyclictest0-21swapper/023:35:180
887799382,31cyclictest27529-21ssh21:50:180
887799373,28cyclictest21137-21ssh22:45:140
886299373,13cyclictest2485-21ssh21:35:180
887799361,24cyclictest19214-21ssh21:45:200
8862993625,5cyclictest10089-21ps19:45:250
8862993617,6cyclictest0-21swapper/020:55:150
8862993523,5cyclictest22639-21latency_hist00:05:010
8862993517,4cyclictest0-21swapper/019:25:190
886299347,17cyclictest28515-21ssh22:10:200
8862993417,7cyclictest0-21swapper/023:50:160
8862993415,5cyclictest0-21swapper/021:55:190
8862993412,8cyclictest0-21swapper/020:40:140
8877993327,4cyclictest15560-21ntpq22:00:400
887799332,19cyclictest22939-21sh23:25:210
8862993322,5cyclictest30221-21ssh00:10:010
888799321,25cyclictest20978-21ssh22:25:200
887799325,15cyclictest0-21swapper/000:10:210
8862993223,3cyclictest14430-21ssh22:40:340
8862992914,4cyclictest0-21swapper/020:10:140
8862992913,6cyclictest0-21swapper/020:20:170
8887992721,4cyclictest25236-21grep00:25:410
8877992722,3cyclictest8325-21cat22:15:360
8877992720,4cyclictest2545-21ps21:15:260
886299270,9cyclictest12726-21ssh22:20:120
886299270,8cyclictest19189-21sort19:55:140
887799264,13cyclictest628-21tcf-agent20:50:140
8877992620,4cyclictest23067-21idleruntime-cro19:25:010
8887992520,3cyclictest28719-21apt20:05:180
8887992519,4cyclictest16018-21kthreadcore00:20:320
886299250,8cyclictest12531-21ps19:10:300
8887992419,3cyclictest24828-21apt20:35:160
888799241,20cyclictest32545-21mailstats00:30:410
886299248,9cyclictest11390-21cat23:55:420
886299243,12cyclictest0-21swapper/023:15:200
8862992419,3cyclictest8518-21needreboot22:35:320
8862992414,4cyclictest0-21swapper/020:30:160
8887992314,4cyclictest13890-21fschecks_time19:15:210
887799234,13cyclictest10868-21ssh21:40:180
887799234,12cyclictest29246-21apt-get22:30:190
8877992311,9cyclictest3248-21kthreadcore19:35:320
8862992311,9cyclictest6510-21latency_hist20:50:010
886299230,8cyclictest23476-21sendmail-mta21:26:020
886299230,11cyclictest0-21swapper/023:20:190
8887992214,5cyclictest18166-21latency_hist21:25:020
8862992216,4cyclictest769-21cut23:10:370
886299220,14cyclictest15306-21/usr/sbin/munin20:25:300
886299220,13cyclictest24380-21cut23:05:310
888799212,16cyclictest32585-21latency_hist19:35:000
8877992113,4cyclictest0-21swapper/019:50:150
8877992111,8cyclictest10486-21latency_hist20:20:010
886299216,12cyclictest0-21swapper/019:40:170
8862992111,7cyclictest5126-21apt-get22:55:180
886299210,7cyclictest0-21swapper/021:30:260
886299210,13cyclictest22671-21kthreadcore21:05:340
887799208,9cyclictest28538-21cron20:05:010
886299142,8cyclictest8866-21cat19:10:010
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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