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2025-05-05 - 01:49

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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: 50.5 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 rack5slot7s.osadl.org (updated Sun May 04, 2025 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30297241160,24sleep021081-1kworker/u3:107:06:540
306879916613,106cyclictest30455-21sshd10:20:440
306879916214,64cyclictest15472-21munin-run12:10:040
306879916116,24cyclictest13176-21apt-get08:36:580
306879916014,122cyclictest8480-21wc08:10:050
306879916010,45cyclictest12379-21sshd08:33:450
306879915913,123cyclictest20037-21memory12:35:450
306879915814,115cyclictest15652-21/usr/sbin/munin12:11:290
306879915813,119cyclictest15024-21apt-get08:51:030
306879915810,123cyclictest5830-21sort07:55:030
306879915727,94cyclictest14625-21grep12:01:070
306879915712,26cyclictest19372-21grep12:30:550
306879915627,21cyclictest0-21swapper09:20:010
306879915615,118cyclictest3361-21munin-run07:40:020
306879915614,47cyclictest1853-21df_inode10:45:290
306879915614,101cyclictest32620-21apt07:20:010
306879915613,35cyclictest17419-21/usr/sbin/munin12:21:040
306879915610,121cyclictest16048-21apt-get08:55:440
306879915517,24cyclictest8556-21irqstats11:25:450
306879915516,37cyclictest21077-21apt-get09:25:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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