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2026-04-16 - 15:18

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 Thu Apr 16, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1299482260253,4sleep40-21swapper/419:07:0014
1299512259252,4sleep70-21swapper/719:07:0417
1299222259252,4sleep110-21swapper/1119:06:483
1299202246206,11sleep100-21swapper/1019:06:472
1299372240233,4sleep170-21swapper/1719:06:549
1300102238219,12sleep140-21swapper/1419:07:506
1300242235226,6sleep60-21swapper/619:08:0216
1299192233212,13sleep90-21swapper/919:06:4619
1299772232214,11sleep30-21swapper/319:07:2013
1300852231209,14sleep180-21swapper/1819:08:5510
1299362230209,13sleep160-21swapper/1619:06:538
1301522229209,12sleep190-21swapper/1919:09:3611
1300792229211,12sleep120-21swapper/1219:08:494
1298892229210,12sleep20-21swapper/219:06:1812
1267962229209,12sleep80-21swapper/819:05:0418
1301242228191,12sleep00-21swapper/019:09:170
1288532227209,11sleep50-21swapper/519:05:2015
1300432226207,12sleep10-21swapper/119:08:181
1268082226207,12sleep150-21swapper/1519:05:117
1301682224203,13sleep130-21swapper/1319:09:495
13057599635,25cyclictest0-21swapper/1222:47:054
13057799374,25cyclictest0-21swapper/1319:32:045
13059599340,34cyclictest0-21swapper/1822:59:5810
13055699320,0cyclictest0-21swapper/722:58:5917
130528993029,0cyclictest0-21swapper/022:58:590
130539992828,0cyclictest0-21swapper/322:58:5913
130564992725,1cyclictest472371-21CPU19
130556992726,0cyclictest0-21swapper/720:59:0417
130591992626,0cyclictest0-21swapper/1720:59:059
13059799250,23cyclictest133273-21ntpq19:10:1811
130547992525,0cyclictest0-21swapper/522:10:1515
130597992420,3cyclictest383050-21updatedb00:03:0211
13056499241,21cyclictest472370-21CPU19
130556992424,0cyclictest0-21swapper/720:24:5917
130547992424,0cyclictest0-21swapper/519:20:1815
130542992424,0cyclictest0-21swapper/422:58:5914
130539992422,1cyclictest0-21swapper/320:59:0513
130552992320,2cyclictest472371-21CPU16
130547992321,1cyclictest402732-21ethtool00:25:1515
130542992322,0cyclictest0-21swapper/419:10:2114
130597992220,1cyclictest472371-21CPU11
13059799220,21cyclictest0-21swapper/1919:35:5311
13059799220,1cyclictest472370-21CPU11
130591992221,1cyclictest0-21swapper/1722:59:599
13057799220,21cyclictest472312-21qemu-system-x8622:56:595
130564992220,1cyclictest472370-21CPU19
13056499220,21cyclictest383050-21updatedb00:03:0119
13056499220,1cyclictest472370-21CPU19
130547992221,1cyclictest691rcuc/522:58:5915
130547992219,3cyclictest0-21swapper/519:10:2215
130542992222,0cyclictest0-21swapper/400:15:1714
130539992219,2cyclictest0-21swapper/319:10:2113
130539992218,4cyclictest0-21swapper/322:10:1613
130597992120,1cyclictest472371-21CPU11
13059799210,1cyclictest472370-21CPU11
13059799210,1cyclictest472370-21CPU11
130595992120,1cyclictest2290275-21systemd-resolve00:03:0710
13059599210,20cyclictest472371-21CPU10
13058599210,21cyclictest0-21swapper/1521:00:597
130581992121,0cyclictest0-21swapper/1422:58:596
130575992121,0cyclictest0-21swapper/1222:59:594
130571992121,0cyclictest0-21swapper/1119:10:213
130564992119,1cyclictest472370-21CPU19
130564992119,1cyclictest472370-21CPU19
13056499210,21cyclictest0-21swapper/919:10:3019
13056499210,1cyclictest472370-21CPU19
130547992111,0cyclictest0-21swapper/500:03:1715
13054299210,2cyclictest472370-21CPU14
130532992121,0cyclictest0-21swapper/122:59:581
130528992121,0cyclictest0-21swapper/020:59:050
13052899210,21cyclictest0-21swapper/022:42:590
130597992020,0cyclictest0-21swapper/1923:43:0011
130597992018,1cyclictest472371-21CPU11
13059799200,19cyclictest472371-21CPU11
13059799200,0cyclictest0-21swapper/1922:50:1411
130595992018,1cyclictest472370-21CPU10
13059599200,20cyclictest0-21swapper/1819:10:0810
13059599200,0cyclictest0-21swapper/1821:45:5710
13059199200,19cyclictest0-21swapper/1719:10:319
13059199200,19cyclictest0-21swapper/1700:03:039
130587992018,1cyclictest472370-21CPU8
130585992020,0cyclictest0-21swapper/1520:59:587
130581992020,0cyclictest0-21swapper/1420:24:596
130581992020,0cyclictest0-21swapper/1419:10:226
130575992018,1cyclictest472371-21CPU4
130564992020,0cyclictest351803-21strings23:25:1619
130564992020,0cyclictest0-21swapper/923:20:1619
130564992020,0cyclictest0-21swapper/920:59:0519
130564992020,0cyclictest0-21swapper/920:40:1619
130564992020,0cyclictest0-21swapper/919:19:5219
130564992019,1cyclictest0-21swapper/920:27:5519
130564992018,1cyclictest472371-21CPU19
13056499200,20cyclictest0-21swapper/900:11:3719
13056499200,0cyclictest0-21swapper/919:40:1719
130561992020,0cyclictest0-21swapper/822:58:5918
13056199200,20cyclictest0-21swapper/800:03:0618
13056199200,19cyclictest296261-21strings22:20:1618
13056199200,19cyclictest0-21swapper/800:19:0118
13056199200,0cyclictest0-21swapper/819:10:0218
13055699200,20cyclictest0-21swapper/721:50:1417
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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