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2024-07-27 - 03:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackcslot4s.osadl.org (updated Fri Jul 26, 2024 12:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11656993522,8cyclictest11926-21apt-get12:00:143
11656993522,8cyclictest11926-21apt-get12:00:133
1164699322,15cyclictest27741-21apt-get07:55:101
1165299275,19cyclictest2459-21grep11:30:202
11656992617,5cyclictest23935-21python307:44:593
11656992516,7cyclictest18620-21df_inode09:05:273
1165699251,5cyclictest11501-21sed12:00:013
1165699251,20cyclictest3194-21lsb_release11:35:013
1165699251,20cyclictest23456-21munin-run09:20:003
1165699250,20cyclictest5250-21munin-run08:25:003
11656992419,3cyclictest16796-21grep12:10:243
1165699241,19cyclictest11279-21awk10:20:003
1165699232,14cyclictest32557-21apt-get11:25:123
1165699231,18cyclictest2810-21python309:55:013
11656992311,7cyclictest13832-21apt-key12:05:013
1165699230,5cyclictest6431-21perf11:44:593
11644992315,6cyclictest15129-21awk07:15:210
1165699222,14cyclictest16814-21apt-get09:00:143
11656992215,5cyclictest16154-21tr08:55:253
11656992214,5cyclictest19364-21cron10:45:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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