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2024-11-09 - 08:55

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 Mon Sep 16, 2024 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
106232316247,57sleep20-21swapper/207:05:402
112052305218,70sleep10-21swapper/107:09:391
110662251202,35sleep00-21swapper/007:08:260
108812248196,38sleep30-21swapper/307:06:463
2173321460,4sleep21144299cyclictest11:15:002
27802520,9sleep119-21ksoftirqd/109:15:171
192382510,1sleep00-21swapper/011:10:000
1144499270,24cyclictest1454-21python308:00:003
1144499261,22cyclictest24855-21latency_hist07:40:013
11444992517,6cyclictest29799-21pidof09:02:453
1144299242,15cyclictest23861-21taskset08:50:082
1144499231,19cyclictest23267-21python308:50:003
1144499231,18cyclictest19995-40apt-check12:25:053
1144499230,20cyclictest25361-40apt-check07:40:063
11442992314,6cyclictest24896-21id07:40:002
1144499221,18cyclictest21406-21python311:15:003
1144299222,14cyclictest6344-21apt-get08:10:122
1144299222,13cyclictest24167-21apt-get11:20:132
11442992217,3cyclictest23235-21apt-get08:50:012
11442992216,3cyclictest26578-21sendmail12:40:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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