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2024-04-27 - 07:53

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 50 highest latencies:
System rackeslot6s.osadl.org (updated Sat Apr 27, 2024 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1287844996045,9cyclictest0-21swapper/219:55:022
1287839995810,40cyclictest0-21swapper/020:50:010
1287844995641,12cyclictest30-21rcuc/221:00:012
1287842995547,5cyclictest1306006-21munin-plugin-st20:55:001
1287844995446,5cyclictest1311924-21munin-plugin-st21:30:002
1287844995446,5cyclictest1311924-21munin-plugin-st21:30:002
1287844995445,5cyclictest1317928-21munin-plugin-st22:05:002
1287844995238,6cyclictest30-21rcuc/221:05:012
1287842995235,6cyclictest0-21swapper/122:00:011
1287844995136,10cyclictest0-21swapper/221:50:322
128784299514,27cyclictest1343620-21readlink00:35:011
1287842995133,10cyclictest0-21swapper/122:05:321
1287844995036,10cyclictest0-21swapper/219:40:002
1287842995037,8cyclictest1303374-21grep20:35:311
1287839995039,8cyclictest1300093-21sendmail20:20:000
1287839995033,11cyclictest0-21swapper/022:50:300
1287844994935,8cyclictest0-21swapper/223:40:302
1287844994935,10cyclictest0-21swapper/222:25:002
1287839994941,5cyclictest1329833-21munin-plugin-st23:15:000
1287844994841,4cyclictest1340987-21cron00:20:002
1287844994836,8cyclictest0-21swapper/223:50:002
1287842994836,8cyclictest0-21swapper/120:45:011
1287842994836,7cyclictest0-21swapper/121:50:321
1287842994830,10cyclictest0-21swapper/123:20:201
128783999481,42cyclictest0-21swapper/020:30:240
1287844994738,5cyclictest0-21swapper/223:40:002
1287844994733,9cyclictest0-21swapper/223:25:322
1287842994736,6cyclictest1300851-21grep20:20:291
1287842994736,6cyclictest1300851-21grep20:20:281
1287844994635,4cyclictest0-21swapper/223:50:302
1287844994633,8cyclictest0-21swapper/222:30:322
1287844994629,8cyclictest0-21swapper/220:30:292
1287842994636,6cyclictest1334001-21grep23:35:291
1287842994635,7cyclictest1319514-21grep22:10:301
1287842994635,6cyclictest0-21swapper/120:00:001
1287842994634,8cyclictest1327157-21grep22:55:311
1287842994628,12cyclictest231ktimers/122:35:131
1287842994538,5cyclictest1300088-21latency_hist20:20:001
1287844994436,6cyclictest1311084-21munin-plugin-st21:25:002
1287844994434,5cyclictest0-21swapper/200:30:312
1287844994430,9cyclictest0-21swapper/219:15:012
1287844994425,16cyclictest311ktimers/200:25:012
128784299447,9cyclictest0-21swapper/123:15:011
128784299444,21cyclictest1334054-21apt-get23:40:021
1287842994430,10cyclictest0-21swapper/120:00:261
1287839994431,9cyclictest0-21swapper/019:15:010
1287839994428,10cyclictest0-21swapper/021:55:270
1287839994419,20cyclictest0-21swapper/023:30:010
128783999441,34cyclictest1336006-21latency_hist23:50:010
128783999441,34cyclictest0-21swapper/019:35:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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