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2026-03-16 - 02:09

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 Mar 16, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32350272262256,4sleep100-21swapper/1019:06:122
32350422255248,4sleep10-21swapper/119:06:231
32350522246240,4sleep110-21swapper/1119:06:333
32350322236216,13sleep140-21swapper/1419:06:176
32351302233212,13sleep90-21swapper/919:07:3119
32351242233212,13sleep40-21swapper/419:07:2714
32319752230211,12sleep80-21swapper/819:05:1018
32351862229209,13sleep120-21swapper/1219:08:154
32351252228209,12sleep50-21swapper/519:07:2815
32350742228209,12sleep30-21swapper/319:06:4513
32352662227186,32sleep180-21swapper/1819:09:2110
32350192226206,12sleep20-21swapper/219:06:0412
32349902226208,11sleep00-21swapper/019:05:420
32351182225206,12sleep190-21swapper/1919:07:2111
32351142224204,13sleep170-21swapper/1719:07:199
32351092222203,12sleep130-21swapper/1319:07:165
32350872222215,4sleep150-21swapper/1519:06:587
32319722219199,12sleep60-21swapper/619:05:0916
32349852217196,13sleep160-21swapper/1619:05:388
32350782216196,12sleep70-21swapper/719:06:4917
323566999706,34cyclictest0-21swapper/121:32:031
323568299320,32cyclictest0-21swapper/500:34:5915
3235669992827,1cyclictest0-21swapper/100:34:581
323572799270,0cyclictest0-21swapper/1800:20:1410
3235727992618,7cyclictest0-21swapper/1819:13:0710
3235707992626,0cyclictest0-21swapper/1219:14:224
3235725992422,1cyclictest472370-21CPU9
323569599230,23cyclictest0-21swapper/819:13:1618
3235671992314,9cyclictest0-21swapper/222:10:1612
3235671992314,8cyclictest0-21swapper/219:11:2312
323573099220,1cyclictest472371-21CPU11
323573099220,1cyclictest472371-21CPU11
3235727992210,11cyclictest0-21swapper/1821:21:5810
323572799220,22cyclictest0-21swapper/1800:35:3810
323572799220,1cyclictest0-21swapper/1819:15:4210
3235725992211,11cyclictest0-21swapper/1719:43:599
3235720992217,4cyclictest155148-21gnome-shell19:10:598
323571599220,21cyclictest3236490-21cpuspeed19:10:136
323570099222,19cyclictest472312-21qemu-system-x8619:12:202
3235697992222,0cyclictest0-21swapper/919:43:0419
323569799220,21cyclictest0-21swapper/900:35:4119
3235688992211,11cyclictest0-21swapper/600:01:5816
3235688992211,11cyclictest0-21swapper/600:01:5816
3235682992210,11cyclictest0-21swapper/519:24:0015
3235677992218,4cyclictest0-21swapper/400:35:3214
323573099210,21cyclictest0-21swapper/1919:50:1811
323573099210,21cyclictest0-21swapper/1919:15:0911
323573099210,21cyclictest0-21swapper/1919:11:1911
323573099210,21cyclictest0-21swapper/1900:35:3511
323572099219,11cyclictest0-21swapper/1619:56:588
3235720992120,1cyclictest0-21swapper/1600:34:588
323571799210,2cyclictest472370-21CPU7
323571099210,21cyclictest0-21swapper/1319:12:315
323569799210,21cyclictest0-21swapper/919:15:0519
323569799210,21cyclictest0-21swapper/919:11:1919
323569599210,21cyclictest0-21swapper/819:15:3218
3235691992121,0cyclictest0-21swapper/700:34:5817
323568299210,0cyclictest0-21swapper/521:58:1615
3235674992118,3cyclictest472312-21qemu-system-x8619:14:0413
323566499211,18cyclictest472370-21CPU0
3235730992020,0cyclictest0-21swapper/1919:20:1511
323573099200,19cyclictest472371-21CPU11
323573099200,19cyclictest472371-21CPU11
323572799200,20cyclictest0-21swapper/1819:50:1810
323572599200,19cyclictest0-21swapper/1720:40:159
323572099200,19cyclictest472370-21CPU8
323572099200,19cyclictest472370-21CPU8
323572099200,19cyclictest0-21swapper/1600:35:178
323571799200,1cyclictest7504-21CPU7
323571799200,1cyclictest7504-21CPU7
3235715992020,0cyclictest0-21swapper/1400:34:596
3235710992020,0cyclictest0-21swapper/1319:43:055
323571099200,20cyclictest0-21swapper/1319:15:255
323570599201,19cyclictest7448-21qemu-system-x8619:12:193
3235695992020,0cyclictest0-21swapper/820:15:1818
3235695992019,1cyclictest0-21swapper/800:34:5818
323569599200,20cyclictest0-21swapper/800:35:3618
323569599200,20cyclictest0-21swapper/800:20:1518
323569199200,19cyclictest472370-21CPU17
323569199200,19cyclictest0-21swapper/721:40:1617
323568899200,19cyclictest0-21swapper/619:10:1416
323567199200,18cyclictest0-21swapper/219:15:4212
323566499200,0cyclictest0-21swapper/000:34:580
3235730991919,0cyclictest0-21swapper/1900:24:1511
323572799198,11cyclictest0-21swapper/1819:59:5810
3235727991919,0cyclictest0-21swapper/1822:35:1410
3235727991918,1cyclictest0-21swapper/1820:30:3010
3235727991916,0cyclictest0-21swapper/1822:10:1610
323572599198,11cyclictest0-21swapper/1721:32:599
323572599190,19cyclictest0-21swapper/1722:35:159
323572599190,19cyclictest0-21swapper/1719:11:049
323572599190,19cyclictest0-21swapper/1700:20:179
323572099190,19cyclictest0-21swapper/1619:15:088
323571799190,19cyclictest0-21swapper/1519:16:107
323571799190,19cyclictest0-21swapper/1500:35:387
323571599190,18cyclictest0-21swapper/1400:35:296
323571099190,19cyclictest0-21swapper/1321:10:165
3235707991919,0cyclictest0-21swapper/1219:15:434
3235697991919,0cyclictest3435445-21strings23:00:1719
3235697991919,0cyclictest3367228-21strings21:40:1519
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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