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2026-04-06 - 13:26

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 100 highest latencies:
System rack0slot6s.osadl.org (updated Mon Apr 06, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36295522243224,12sleep30-21swapper/319:06:2113
36298312242223,12sleep80-21swapper/819:09:4718
36297192240233,4sleep190-21swapper/1919:08:1811
36285722236199,12sleep40-21swapper/419:05:2114
36296942234213,13sleep50-21swapper/519:08:0315
36296892234227,4sleep00-21swapper/019:07:590
36298422232213,12sleep150-21swapper/1519:09:537
36295992232211,13sleep130-21swapper/1319:06:505
36295512231212,12sleep20-21swapper/219:06:2012
36295152230210,12sleep100-21swapper/1019:05:482
36295112228208,12sleep60-21swapper/619:05:4416
36297902227207,12sleep170-21swapper/1719:09:169
36295212226206,13sleep160-21swapper/1619:05:548
36297472225206,12sleep10-21swapper/119:08:401
36296002225207,11sleep140-21swapper/1419:06:516
36294922221200,13sleep120-21swapper/1219:05:304
36295952218197,13sleep90-21swapper/919:06:4719
36296322216196,12sleep180-21swapper/1819:07:1610
36295392216197,12sleep110-21swapper/1119:06:093
36296442214195,12sleep70-21swapper/719:07:2517
3630204993226,5cyclictest472370-21CPU14
363023999283,23cyclictest472371-21CPU5
363025999240,23cyclictest472370-21CPU11
363025999240,20cyclictest0-21swapper/1919:10:1811
3630223992322,1cyclictest1051rcuc/919:10:2019
3630223992321,1cyclictest472370-21CPU19
3630223992312,11cyclictest0-21swapper/921:44:5819
3630194992310,12cyclictest0-21swapper/120:17:581
3630259992220,1cyclictest472370-21CPU11
363025999220,21cyclictest472371-21CPU11
363024599221,20cyclictest472370-21CPU7
363022399220,21cyclictest0-21swapper/921:27:3119
363021799220,21cyclictest472370-21CPU18
3630259992120,1cyclictest0-21swapper/1923:05:1611
3630259992120,1cyclictest0-21swapper/1900:07:5011
3630259992120,1cyclictest0-21swapper/1900:02:5911
3630249992121,0cyclictest0-21swapper/1600:30:128
3630235992118,2cyclictest472371-21CPU4
363023599210,1cyclictest472371-21CPU4
3630223992121,0cyclictest0-21swapper/923:54:5919
363022399210,20cyclictest472370-21CPU19
363022399210,20cyclictest472370-21CPU19
3630214992121,0cyclictest0-21swapper/719:10:2217
363020999210,2cyclictest3672414-21cut19:55:1515
3630204992118,3cyclictest0-21swapper/419:10:1714
3630259992020,0cyclictest0-21swapper/1920:00:1611
3630259992019,1cyclictest0-21swapper/1900:35:1811
3630259992018,1cyclictest472371-21CPU11
363025699200,0cyclictest0-21swapper/1819:10:0310
3630251992020,0cyclictest0-21swapper/1719:10:229
3630239992017,2cyclictest472371-21CPU5
3630223992019,0cyclictest0-21swapper/919:45:1719
363022399200,19cyclictest472371-21CPU19
363022399200,18cyclictest107-21ksoftirqd/919:22:0519
363022399200,0cyclictest0-21swapper/922:25:1519
363022399200,0cyclictest0-21swapper/920:30:1619
3630217992020,0cyclictest0-21swapper/800:39:5818
363021799200,20cyclictest0-21swapper/823:24:3418
363021799200,20cyclictest0-21swapper/819:10:1818
363021499200,19cyclictest0-21swapper/722:05:1717
363020999200,19cyclictest472370-21CPU15
363020499200,0cyclictest0-21swapper/421:27:3114
3630201992018,1cyclictest472371-21CPU13
3630259991919,0cyclictest0-21swapper/1923:25:1511
3630259991919,0cyclictest0-21swapper/1923:18:3411
3630259991919,0cyclictest0-21swapper/1900:32:5411
3630259991919,0cyclictest0-21swapper/1900:27:3511
3630259991917,1cyclictest472371-21CPU11
363025999190,18cyclictest0-21swapper/1922:02:3211
363025999190,18cyclictest0-21swapper/1922:02:3211
3630256991919,0cyclictest0-21swapper/1822:15:3110
363025699190,19cyclictest0-21swapper/1821:25:1710
363025699190,19cyclictest0-21swapper/1800:15:1610
363025699190,0cyclictest0-21swapper/1820:20:1510
363025199190,19cyclictest0-21swapper/1720:00:159
363024999190,19cyclictest0-21swapper/1619:10:398
363024999190,18cyclictest0-21swapper/1623:40:168
363024599190,18cyclictest0-21swapper/1500:07:507
363024199190,19cyclictest3693769-21strings20:20:166
3630235991917,1cyclictest472371-21CPU4
3630223991919,0cyclictest0-21swapper/923:18:3419
3630223991919,0cyclictest0-21swapper/920:00:1619
3630223991919,0cyclictest0-21swapper/919:38:2819
3630223991919,0cyclictest0-21swapper/900:07:5019
3630217991919,0cyclictest0-21swapper/823:40:1618
3630217991919,0cyclictest0-21swapper/820:01:2818
3630217991919,0cyclictest0-21swapper/800:03:0618
363021799190,19cyclictest0-21swapper/823:15:1618
363021799190,19cyclictest0-21swapper/820:50:1618
363021499190,19cyclictest0-21swapper/720:30:1617
363021499190,0cyclictest0-21swapper/723:05:1617
363021199190,19cyclictest3663918-21strings19:45:1716
363021199190,19cyclictest0-21swapper/619:10:5216
363021199190,18cyclictest0-21swapper/623:28:3416
363021199190,18cyclictest0-21swapper/623:15:1516
3630204991917,1cyclictest472370-21CPU14
3630204991913,3cyclictest3760024-21/usr/sbin/munin21:40:1214
363020499190,18cyclictest0-21swapper/400:32:5514
3630259991818,0cyclictest3877227-21strings23:55:1711
3630259991818,0cyclictest0-21swapper/1923:00:1511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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