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2024-05-03 - 00:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, 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 rack8slot4s.osadl.org (updated Thu May 02, 2024 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26288982227177,40sleep10-21swapper/107:09:021
26287822222167,17sleep50-21swapper/507:07:205
26287702219186,21sleep30-21swapper/307:07:103
26288882218185,21sleep00-21swapper/007:08:530
26287492210182,18sleep20-21swapper/207:06:532
26287532209176,21sleep60-21swapper/607:06:586
26287652208174,21sleep70-21swapper/707:07:077
26286682202167,22sleep40-21swapper/407:05:424
27814272580,0sleep30-21swapper/311:30:143
262921599296,10cyclictest0-21swapper/707:44:407
2629211992826,1cyclictest2739429-21fwupd10:16:276
262920099280,26cyclictest1647396-21snmpd12:25:132
262921099260,22cyclictest0-21swapper/507:55:005
262921099260,1cyclictest0-21swapper/509:10:135
262920099260,0cyclictest0-21swapper/208:05:012
262921199250,23cyclictest2809534-21dump-pmu-power12:20:006
262921199250,1cyclictest2653420-21apt-get07:50:086
262921099250,24cyclictest2727991-21perf10:00:015
2629200992521,3cyclictest0-21swapper/211:35:012
2629200992519,5cyclictest2655862-21perf07:55:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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