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2025-04-02 - 05:48

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 Wed Apr 02, 2025 00:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14128224292186,97sleep00-21swapper19:07:190
144739917418,128cyclictest24861-21apt-get00:15:220
144739916817,25cyclictest27493-21apt-get00:35:180
144739916514,24cyclictest25347-21munin-run20:20:020
144739915813,120cyclictest13656-21/usr/sbin/munin22:51:210
144739915723,23cyclictest27305-21munin-run00:35:010
144739915712,121cyclictest15266-21sort22:56:080
144739915616,116cyclictest9267-21users22:11:000
144739915613,39cyclictest31073-21apt-get21:01:270
144739915612,43cyclictest17474-21cat23:15:420
144739915543,23cyclictest5443-21switchtime21:40:590
144739915421,27cyclictest9519-21diskstats22:15:340
144739915416,24cyclictest7801-21df_inode22:00:300
144739915410,42cyclictest15131-21grep19:11:020
144739915410,28cyclictest18729-21grep23:21:070
14473991539,120cyclictest25736-21ls20:20:460
144739915342,89cyclictest2007-21sendmail_mailst21:16:030
144739915315,29cyclictest2403-21apt-get21:20:140
144739915314,116cyclictest22806-21munin-run20:00:030
14473991529,117cyclictest24463-21unixbench_singl20:11:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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