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2025-07-07 - 02:16

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 Mon Jul 07, 2025 00:41:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2466890998165,11cyclictest0-21swapper/222:08:022
2466889995244,5cyclictest2593992-21munin-run23:20:011
2466890995142,6cyclictest2468393-21systemd-run19:15:022
2466890994738,6cyclictest422-21dbus-daemon23:58:032
2466889994637,6cyclictest0-21swapper/100:00:021
2466888994638,6cyclictest2466887-21cyclictest21:12:580
2466888994638,6cyclictest2466887-21cyclictest21:12:580
2466890994537,4cyclictest0-21swapper/221:52:562
2466889994510,20cyclictest28-21ksoftirqd/121:48:021
246688999446,33cyclictest2540365-21ssh22:03:001
2466889994436,5cyclictest422-21dbus-daemon22:08:061
2466889994436,5cyclictest2557521-21/usr/sbin/munin22:27:511
2466890994335,4cyclictest0-21swapper/221:58:002
2466889994337,2cyclictest0-21swapper/120:20:011
2466890994235,4cyclictest2510344-21sendmail-msp21:20:012
2466889994234,5cyclictest2552231-21cron22:20:011
246688999422,35cyclictest2512487-21ssh21:23:061
2466888994236,4cyclictest422-21dbus-daemon23:35:010
2466888994234,5cyclictest2607863-21systemd-run23:40:020
246688899421,35cyclictest0-21swapper/022:22:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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