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2025-07-12 - 11:29

OSADL QA Farm on Real-time of Mainline Linux

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

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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  Phytec
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: 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 rackbslot5s.osadl.org (updated Sat Jul 12, 2025 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4112699995140,7cyclictest4155647-21grep21:10:250
4112710994936,9cyclictest391ktimers/320:55:133
4112699994941,5cyclictest23068-21latency_hist00:10:000
4112703994635,7cyclictest4124747-21grep19:40:291
4112699994637,5cyclictest299-21systemd-logind23:57:450
4112699994637,5cyclictest299-21systemd-logind23:57:450
4112699994433,7cyclictest4158003-21apt-key21:20:010
4112710994333,6cyclictest4117934-21unixbench_singl19:20:243
4112710994313,9cyclictest20598-21awk00:00:253
4112706994328,11cyclictest311ktimers/222:00:152
4112706994328,11cyclictest311ktimers/222:00:152
4112710994233,5cyclictest4125182-21munin-plugin-st19:45:013
4112706994233,6cyclictest5585-21sh23:20:002
4112706994032,6cyclictest4138673-21kworker/u8:2+events_unbound20:37:152
4112703994029,7cyclictest4116658-21sendmail19:20:011
4112710993910,10cyclictest4148538-21expr20:50:243
4112710993910,10cyclictest4148538-21expr20:50:243
4112706993930,5cyclictest0-21swapper/222:45:012
4112703993932,4cyclictest4178908-21sendmail22:20:001
4112703993932,4cyclictest4178908-21sendmail22:20:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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