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2024-11-23 - 17:24

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 rack7slot4s.osadl.org (updated Sat Nov 23, 2024 12:45:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1632699771,50cyclictest5369-21ssh12:15:162
1632699771,50cyclictest5369-21ssh12:15:152
16326996216,34cyclictest22146irq/40-dwc2_hso08:30:142
1632699593,37cyclictest32340-21sh10:55:112
1631799562,45cyclictest6510-21sendmail-msp11:40:121
1632699553,41cyclictest32393-21sendmail-msp08:00:142
1632699553,41cyclictest32393-21sendmail-msp08:00:132
1631799542,43cyclictest18072-21sendmail-msp09:20:121
16326995317,27cyclictest0-21swapper/211:05:122
16326995218,13cyclictest3464-21ssh09:10:182
1632699512,26cyclictest16336-21ssh10:45:112
16326995116,23cyclictest27-21ksoftirqd/210:00:122
1631799481,35cyclictest9202-21ssh10:40:131
1631799472,34cyclictest13286-21sendmail-msp10:00:111
1631799442,4cyclictest131rcu_preempt09:30:191
16326994316,19cyclictest9472-21ssh11:00:222
1632699430,37cyclictest23418-21ssh09:45:142
1632699430,37cyclictest23418-21ssh09:45:132
1631799422,36cyclictest30858-21ssh09:50:171
16326994129,8cyclictest11543-21apt-get08:45:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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