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2025-07-12 - 08:37

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, 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: 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 rack2slot7s.osadl.org (updated Sat Jul 12, 2025 00:41:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
378930399502,42cyclictest3864179-21ssh22:03:100
378930399502,42cyclictest3864179-21ssh22:03:100
3789305994939,6cyclictest3796790-21idleruntime-cro19:35:012
3789305994838,7cyclictest422-21dbus-daemon22:45:022
3789305994739,5cyclictest3923699-21munin-run23:25:012
3789305994732,4cyclictest380439550kworker/u8:6+xprtiod20:35:012
3789304994739,5cyclictest3972527-21systemd-run00:35:011
3789304994739,5cyclictest3972527-21systemd-run00:35:011
3789303994732,11cyclictest12450irq/32-eth023:18:040
3789303994725,13cyclictest12450irq/32-eth023:58:030
378930399471,38cyclictest3856825-21sh21:53:070
3789305994638,5cyclictest1-21systemd23:30:012
378930399462,38cyclictest3882238-21ssh22:27:580
378930399462,38cyclictest151ktimers/000:02:590
3789305994535,6cyclictest3792343-21latency_hist19:20:012
3789305994436,5cyclictest3836464-21systemd-run21:25:022
3789305994435,5cyclictest3949213-21cups-browsed00:28:092
3789305994435,5cyclictest3949213-21cups-browsed00:28:092
3789305994432,9cyclictest3975452-21munin-plugin-st00:40:012
3789303994423,14cyclictest151ktimers/021:07:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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