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2026-06-15 - 12:44

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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.
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 50 highest latencies:
System rack7slot7s.osadl.org (updated Mon Jun 15, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
867329282,6sleep00-21swapper/019:09:150
866129166,9sleep30-21swapper/319:09:063
849529072,14sleep10-21swapper/119:06:551
859328975,10sleep20-21swapper/219:08:122
101082700,0sleep20-21swapper/222:32:032
310402630,1sleep30-21swapper/322:45:103
240502520,1sleep339-21ksoftirqd/321:42:243
311992510,0sleep30-21swapper/323:04:343
881799280,1cyclictest0-21swapper/121:04:371
8817992624,1cyclictest29923-21cat00:20:221
8817992624,1cyclictest29923-21cat00:20:211
882299240,24cyclictest0-21swapper/223:12:212
882499231,20cyclictest0-21swapper/320:45:123
882499230,21cyclictest0-21swapper/322:31:363
882499220,22cyclictest0-21swapper/300:24:243
882499220,22cyclictest0-21swapper/300:24:233
881799221,21cyclictest0-21swapper/123:47:541
881799220,21cyclictest22825-21sendmail_mailqu00:35:231
881799210,21cyclictest0-21swapper/123:30:581
8824992019,1cyclictest0-21swapper/321:38:303
881799200,20cyclictest0-21swapper/122:37:591
8813992017,2cyclictest13-21ksoftirqd/000:35:220
8824991912,6cyclictest0-21swapper/322:42:123
8824991912,6cyclictest0-21swapper/322:42:123
882499180,16cyclictest0-21swapper/321:25:303
882299187,11cyclictest32-21ksoftirqd/221:15:232
8822991816,2cyclictest32-21ksoftirqd/223:39:322
882299180,18cyclictest0-21swapper/223:52:522
881799181,17cyclictest0-21swapper/123:03:041
881799181,16cyclictest0-21swapper/123:20:131
881799180,4cyclictest0-21swapper/121:31:581
881799180,3cyclictest0-21swapper/119:20:131
881799180,1cyclictest0-21swapper/121:11:121
881799180,17cyclictest0-21swapper/123:29:351
881799180,16cyclictest0-21swapper/100:34:391
882499172,1cyclictest0-21swapper/300:32:433
881799170,15cyclictest0-21swapper/122:31:361
882499169,5cyclictest0-21swapper/300:25:143
8824991615,1cyclictest0-21swapper/323:16:383
882499160,15cyclictest0-21swapper/319:40:133
882299165,10cyclictest22721-21/usr/sbin/munin22:40:202
882299165,10cyclictest22721-21/usr/sbin/munin22:40:202
882299160,15cyclictest0-21swapper/221:51:442
882299160,14cyclictest0-21swapper/222:15:192
881799165,8cyclictest11926-21wc21:55:001
8817991615,1cyclictest0-21swapper/122:51:451
881799160,2cyclictest0-21swapper/100:15:471
881799160,16cyclictest0-21swapper/123:35:271
881799160,16cyclictest0-21swapper/121:44:001
881799160,13cyclictest0-21swapper/120:45:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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