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2023-11-28 - 21:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, 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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  Intel
Click here to display the system's profile data or here to proceed to next system.
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.
Unexpectedly long latencies may be caused by SMIs
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 rack1slot6s.osadl.org (updated Tue Nov 28, 2023 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18647997824,32cyclictest0-21swapper/109:02:571
18647997627,41cyclictest14797-21timerwakeupswit08:32:551
18647997534,35cyclictest9478-21sshd09:27:431
18647997528,28cyclictest7841-21load10:27:411
18647997528,28cyclictest7841-21load10:27:411
243699740,3rtkit-daemon2435-21rtkit-daemon07:15:143
18647997333,32cyclictest2664-21munin-run08:12:131
18647997326,28cyclictest25754-21chrt08:57:341
234922720,3sleep2281ktimersoftd/210:57:502
18647997230,35cyclictest8813-21runrttasks06:13:531
18647997230,35cyclictest1222-21snmpd10:01:211
18647997226,29cyclictest0-21swapper/107:02:171
18647997225,40cyclictest0-21swapper/105:58:061
18647997225,29cyclictest0-21swapper/110:27:081
18647997223,34cyclictest0-21swapper/108:42:341
18647997223,32cyclictest0-21swapper/106:47:471
18647997133,11cyclictest22061-21cpuspeed_turbos10:57:281
18647997129,36cyclictest4935-21pluginstate09:17:521
18647997126,37cyclictest14384-21munin-node06:27:451
18647997126,37cyclictest14384-21munin-node06:27:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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