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2025-04-21 - 10:57

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 Apr 21, 2025 00:41:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
599012996735,22cyclictest422-21dbus-daemon00:28:552
599012996253,5cyclictest642205-21munin-run21:20:012
599011995545,6cyclictest642243-21systemd-run21:20:011
599012995347,3cyclictest0-21swapper/223:25:022
599011995238,11cyclictest3038514-21cups-browsed19:45:011
599010995213,6cyclictest640074-21/usr/sbin/munin21:17:090
599011995140,7cyclictest713346-21fschecks_time23:12:071
599010995127,4cyclictest601919-21unixbench_singl19:17:280
59901099512,25cyclictest708126-21ssh23:02:230
59901199504,14cyclictest171rcu_preempt22:52:171
599012994940,6cyclictest664208-21munin-plugin-st21:55:012
599012994838,7cyclictest656041-21/usr/sbin/munin21:42:112
599011994839,6cyclictest768378-21systemd-run00:40:011
599011994839,6cyclictest768378-21systemd-run00:40:011
599010994827,18cyclictest0-21swapper/023:42:190
599010994731,9cyclictest755498-21sh00:17:150
59901299461,30cyclictest677605-21sh22:15:502
599011994635,7cyclictest729970-21ssh23:37:131
599011994635,7cyclictest729970-21ssh23:37:131
599011994635,6cyclictest631940-21systemd-run21:00:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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