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2026-01-08 - 13:03

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, 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.
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: 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 rackfslot7s.osadl.org (updated Thu Jan 08, 2026 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4521532143109,28sleep10-21swapper/119:09:141
4520322141101,24sleep20-21swapper/219:07:442
4519482141102,33sleep00-21swapper/019:06:370
4518942141110,26sleep30-21swapper/319:05:573
452462992819,7cyclictest13573-21gdbus19:35:062
452462992418,5cyclictest506586-21awk21:55:012
452462992218,2cyclictest0-21swapper/221:40:012
452456992217,3cyclictest0-21swapper/100:20:001
45246699216,4cyclictest355-21systemd-journal19:57:193
452462992117,2cyclictest0-21swapper/200:14:592
45245699211,17cyclictest487547-21ntpq20:55:171
452452992117,3cyclictest13065-10wireplumber23:05:010
452452992117,1cyclictest453878-21apt-get19:15:020
452452992115,4cyclictest13065-10wireplumber22:20:000
45246699209,8cyclictest475409-21munin-run20:20:003
45246699207,10cyclictest13573-21gdbus21:40:353
452466992016,2cyclictest493070-21idleruntime-cro21:15:013
452466992015,3cyclictest521588-21smartctl22:40:133
452456992011,6cyclictest545998-21memory23:55:151
4916452190,1sleep30-21swapper/321:10:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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