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2025-11-26 - 11:03

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 100 highest latencies:
System rack5slot7s.osadl.org (updated Wed Nov 26, 2025 00:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31651224372193,97sleep00-21swapper19:09:120
317909916219,114cyclictest29590-21apt-get22:15:230
317909916013,30cyclictest2135-21apt-config22:45:090
317909915910,127cyclictest17117-21tr00:15:490
317909915816,41cyclictest10486-21munin-run20:20:030
317909915713,120cyclictest7895-21readlink23:20:020
317909915643,94cyclictest18239-21rt-features21:05:550
317909915627,22cyclictest0-21swapper00:20:540
317909915611,121cyclictest16765-21cat00:15:030
317909915516,36cyclictest25361-21apt-get21:50:260
317909915424,21cyclictest15699-21mailstats00:05:590
317909915420,109cyclictest18564-21diskstats00:25:330
317909915416,113cyclictest32596-21munin-node19:15:100
317909915415,25cyclictest20142-21df00:35:260
317909915414,27cyclictest7376-21/usr/sbin/munin20:00:230
317909915414,100cyclictest4051-21munin-run19:40:020
317909915413,23cyclictest13108-21diskstats20:35:370
317909915413,118cyclictest5206-21zcat23:00:550
317909915411,25cyclictest9827-21grep23:30:420
317909915411,120cyclictest23574-21plymouth21:40:020
317909915322,20cyclictest9605-21grep20:11:070
317909915317,113cyclictest5756-21modprobe19:50:060
317909915315,115cyclictest19247-21apt-get00:30:190
317909915312,117cyclictest7259-21munin-run20:00:030
317909915312,116cyclictest16908-21munin-run21:00:020
317909915310,39cyclictest2221-21apt-config22:45:140
317909915310,117cyclictest3170-21/usr/sbin/munin22:50:460
317909915238,21cyclictest8483-21mailstats23:21:000
317909915219,25cyclictest29423-21munin-run22:15:030
317909915216,95cyclictest1225-21munin-run22:40:010
317909915214,23cyclictest12895-21munin-run20:35:000
317909915211,25cyclictest19413-21/usr/sbin/munin21:15:530
317909915211,22cyclictest26800-21cut21:56:050
317909915115,113cyclictest2450-21munin-run19:30:010
317909915111,40cyclictest514-21latency_hist22:35:060
317909915036,20cyclictest20322-21apt-get21:20:200
317909915032,24cyclictest14870-21/usr/sbin/munin00:01:000
317909915023,19cyclictest28729-21kworker/u2:222:20:200
317909915018,27cyclictest22309-21memory21:30:460
317909915018,110cyclictest841-21munin-run19:20:030
317909915016,20cyclictest14515-21munin-run20:45:020
317909915015,22cyclictest15518-21diskstats20:50:340
317909915015,112cyclictest10585-21kernelversion23:35:400
317909914926,24cyclictest6179-21cat23:06:040
317909914919,26cyclictest8176-21apt-get20:05:170
317909914919,23cyclictest21516-21memory21:25:510
317909914917,105cyclictest17028-21apt-get21:00:190
317909914916,23cyclictest27234-21df22:00:250
317909914914,113cyclictest28041-21diskstats22:05:330
317909914911,27cyclictest25129-21head21:46:040
317909914831,95cyclictest1588-21head19:21:100
317909914818,101cyclictest2791-21memory19:30:460
317909914816,108cyclictest18728-21diskstats21:10:310
317909914816,104cyclictest4967-21apt-get19:45:180
317909914713,110cyclictest7077-21munin-run23:15:020
317909914711,29cyclictest4643-21sshd22:58:330
317909914710,113cyclictest4806-21grep19:41:020
317909914629,21cyclictest0-21swapper23:55:480
317909914617,29cyclictest13058-21memory23:50:430
317909914617,21cyclictest12678-21users23:46:060
317909914612,23cyclictest23995-21grep21:40:500
317909914516,37cyclictest11335-21diskstats23:40:330
317909914415,25cyclictest8805-21/usr/sbin/munin23:25:470
317909914414,107cyclictest11095-21mailstats20:20:570
317909914413,25cyclictest14727-21diskstats20:45:340
317909914315,26cyclictest31481-21df22:25:230
317909914217,41cyclictest0-21swapper20:25:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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