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2025-11-08 - 09:27

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 Sat Nov 08, 2025 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4278223872161,172sleep00-21swapper19:06:360
47039916416,123cyclictest14101-21users20:02:310
47039916114,105cyclictest26052-21df_inode00:35:280
47039915918,26cyclictest16669-21apt-get23:40:220
47039915718,38cyclictest26229-21munin-run21:20:020
47039915715,117cyclictest10085-21df19:40:290
47039915711,26cyclictest14925-21munin-run23:30:000
47039915614,118cyclictest15763-21munin-plugin-st20:15:010
47039915613,118cyclictest21918-21grep20:50:590
47039915612,120cyclictest1440-21df22:05:280
47039915516,44cyclictest24027-21diskstats21:05:300
47039915516,111cyclictest25143-21apt-get00:30:180
47039915420,26cyclictest26461-21diskstats21:20:360
47039915418,22cyclictest30254-21apt-get21:46:140
47039915414,22cyclictest27681-21awk21:26:000
47039915413,115cyclictest13148-21ls23:16:030
4703991539,104cyclictest7750-21sort22:45:050
47039915317,112cyclictest20808-21df_inode20:45:290
47039915315,113cyclictest10902-21munin-run23:05:000
47039915314,100cyclictest20113-21/usr/sbin/munin00:02:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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