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2025-12-06 - 17:06

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 Dec 06, 2025 12:39:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2126831995338,11cyclictest2220650-21ssh10:33:481
2126830995343,7cyclictest1315733-21cups-browsed11:34:230
2126830995339,11cyclictest2306962-21true12:30:010
2126830995335,3cyclictest171rcu_preempt09:24:180
2126831994738,5cyclictest2209575-21sshd10:17:411
2126831994736,7cyclictest422-21dbus-daemon11:10:011
212683199463,34cyclictest2214408-21ssh10:24:191
2126830994537,5cyclictest2147832-21sendmail08:20:010
2126830994534,8cyclictest2249877-21sshd11:14:410
2126831994436,5cyclictest2194447-21latency_hist09:55:031
2126830994437,4cyclictest2138836-21systemd-run07:50:010
2126830994436,4cyclictest2135808-21sendmail07:40:010
2126830994427,14cyclictest12550irq/33-eth012:14:210
2126830994422,13cyclictest12450irq/32-eth009:14:230
2126832994335,5cyclictest2158318-21systemd-run08:55:022
2126832994333,6cyclictest0-21swapper/212:00:012
2126831994335,5cyclictest2306961-21systemd-run12:30:011
2126831994335,5cyclictest1315733-21cups-browsed11:19:191
2126831994334,6cyclictest2242559-21unixbench-2d11:04:361
2126830994334,6cyclictest2275145-21systemd-run11:50:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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