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2025-07-14 - 10:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

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.

Total number of samples: 50.5 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 rack5slot7s.osadl.org (updated Mon Jul 14, 2025 00:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31830224332196,97sleep00-21swapper19:08:350
320349916515,124cyclictest6437-21memory23:06:220
320349916211,126cyclictest26879-21systemctl21:51:030
320349916038,25cyclictest31090-21sh22:17:000
32034991599,124cyclictest11997-21if_eth023:40:360
320349915810,26cyclictest14068-21unixbench_singl23:51:030
320349915732,105cyclictest5194-21munin-node23:00:120
320349915718,100cyclictest27903-21apt22:00:020
320349915616,40cyclictest360-21munin-run19:15:020
320349915615,26cyclictest9866-21apt-get20:10:190
320349915516,24cyclictest13174-21apt20:30:160
320349915515,24cyclictest1279-21diskstats22:35:310
320349915514,21cyclictest15961-21diskstats00:05:350
320349915512,23cyclictest14358-21awk23:55:360
320349915417,25cyclictest18061-21munin-run21:00:030
320349915417,21cyclictest18056-21apt-get21:00:340
320349915417,114cyclictest20896-21diskstats21:15:360
320349915413,117cyclictest30043-21wc22:10:590
320349915412,119cyclictest21981-21ps21:20:560
320349915412,119cyclictest112-21systemd-journal19:45:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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