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2025-12-12 - 18:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

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 rack0slot6s.osadl.org (updated Fri Dec 12, 2025 00:46:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
190063825247,3sleep70-21swapper/719:07:5017
190059825043,4sleep190-21swapper/1919:07:2111
190053824943,3sleep110-21swapper/1119:06:333
190072824742,3sleep140-21swapper/1419:08:566
190063624741,3sleep50-21swapper/519:07:4715
190050924741,3sleep180-21swapper/1819:06:2010
190071924439,3sleep60-21swapper/619:08:4916
190057924439,3sleep20-21swapper/219:07:0412
216599430,40ntpd0-21swapper/1019:05:202
216599430,38ntpd0-21swapper/019:05:200
190061624339,2sleep90-21swapper/919:07:3119
190064124236,3sleep80-21swapper/819:07:5018
198398410,38rtkit-daemon0-21swapper/1319:05:095
190076524136,3sleep160-21swapper/1619:09:198
190064524135,3sleep120-21swapper/1219:07:544
190071324034,3sleep10-21swapper/119:08:441
190063423833,3sleep30-21swapper/319:07:4513
21818732370,0sleep00-21swapper/000:34:490
190060423734,2sleep40-21swapper/419:07:2614
190068523532,2sleep170-21swapper/1719:08:209
190044123530,3sleep150-21swapper/1519:05:377
190121099346,27cyclictest0-21swapper/820:36:1818
1901192993428,6cyclictest0-21swapper/421:43:0014
190118599340,0cyclictest0-21swapper/219:52:3112
1901222993332,1cyclictest205950irq/149-eno122:15:154
1901222993332,1cyclictest205950irq/149-eno121:42:184
1901222993328,1cyclictest205950irq/149-eno122:53:274
1901222993328,1cyclictest205950irq/149-eno121:05:204
1901185993330,2cyclictest3787898-21CPU12
190118599330,32cyclictest0-21swapper/223:28:0612
190118599330,32cyclictest0-21swapper/223:28:0612
190118599330,32cyclictest0-21swapper/223:09:3212
190118599330,32cyclictest0-21swapper/220:58:3212
1901222993231,1cyclictest205950irq/149-eno122:05:564
1901222993231,1cyclictest205950irq/149-eno121:23:354
1901222993231,1cyclictest205950irq/149-eno121:19:024
1901222993231,1cyclictest205950irq/149-eno120:48:014
1901222993231,1cyclictest205950irq/149-eno120:29:184
1901222993231,1cyclictest205950irq/149-eno120:23:354
1901222993231,1cyclictest205950irq/149-eno100:33:424
1901222993229,3cyclictest205950irq/149-eno123:15:094
1901222993229,3cyclictest205950irq/149-eno123:15:084
190118599320,32cyclictest0-21swapper/223:38:4612
190118599320,31cyclictest2099830-40tracker-miner-f22:56:4612
190118599320,31cyclictest0-21swapper/223:14:3012
190118599320,31cyclictest0-21swapper/221:49:2712
190118599320,31cyclictest0-21swapper/220:39:3112
190118599320,31cyclictest0-21swapper/220:16:2912
190118599320,31cyclictest0-21swapper/219:58:4512
190118599320,31cyclictest0-21swapper/219:45:3312
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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