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2024-07-27 - 07:40

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 50 highest latencies:
System rack8slot4s.osadl.org (updated Sat Jul 27, 2024 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24736022224165,19sleep10-21swapper/119:05:091
24760252223167,44sleep20-21swapper/219:09:442
24759802220162,17sleep40-21swapper/419:09:074
24759262219189,19sleep70-21swapper/719:08:217
24757972217184,21sleep00-21swapper/019:06:290
24758312216183,21sleep50-21swapper/519:06:595
24759132215165,19sleep30-21swapper/319:08:093
24757492214176,24sleep60-21swapper/619:05:476
247628799290,24cyclictest2546381-21apt-get21:10:116
247628199282,1cyclictest2600576-21awk22:45:004
247628799270,23cyclictest0-21swapper/600:10:136
2476278992720,1cyclictest0-21swapper/321:20:103
247627899270,1cyclictest0-21swapper/300:14:593
247627699270,22cyclictest2528858-21awk20:40:012
247628999250,3cyclictest2577717-21perf22:05:007
2476283992523,1cyclictest0-21swapper/500:09:595
2476276992523,1cyclictest2609359-21cron23:00:012
2476289992423,1cyclictest0-21swapper/722:05:157
2476289992423,1cyclictest0-21swapper/722:05:157
2476289992423,0cyclictest0-21swapper/700:15:017
2476289992422,1cyclictest0-21swapper/719:25:007
247628799240,23cyclictest2558124-21apt21:30:136
247628399240,23cyclictest2624354-21apt-get23:25:095
247628399240,23cyclictest0-21swapper/520:05:005
2476276992422,1cyclictest0-21swapper/221:20:092
247627699240,23cyclictest2534549-21awk20:50:002
247627699240,23cyclictest0-21swapper/223:30:122
247627699240,23cyclictest0-21swapper/220:00:122
247627299240,0cyclictest0-21swapper/122:30:111
2476270992421,2cyclictest2667390-21munin-run00:39:590
247627099240,23cyclictest2580983-21http22:10:090
247627099240,23cyclictest2580983-21http22:10:090
2476289992322,1cyclictest0-21swapper/719:45:117
247628999230,22cyclictest2563423-21basename21:40:017
247628799230,22cyclictest2591991-21munin-run22:30:006
247628799230,22cyclictest2485878-21apt-get19:25:146
247628799230,22cyclictest0-21swapper/600:15:106
2476283992321,1cyclictest0-21swapper/523:00:115
247628399230,22cyclictest2638633-21apt-get23:50:095
247628399230,22cyclictest2563847-21apt-get21:40:125
247628399230,1cyclictest0-21swapper/519:40:115
2476281992323,0cyclictest0-21swapper/400:35:184
2476281992321,1cyclictest2543531-21apt-get21:05:114
247627899230,2cyclictest2543106-21turbostat21:05:013
247627899230,22cyclictest2623928-21idleruntime-cro23:25:003
247627899230,22cyclictest2534956-21apt-get20:50:123
247627899230,22cyclictest0-21swapper/319:25:133
2476276992321,1cyclictest2517565-21apt-get20:20:102
2476276992321,1cyclictest2497303-21apt-get19:45:112
2476272992323,0cyclictest0-21swapper/100:35:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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