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2026-09-08 - 08:15

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 Tue Sep 08, 2026 00:46:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
171825310900,84AudioIP~allback0-21swapper/1219:05:334
647520770,75data-loop.00-21swapper/1919:09:1611
175636099766,34cyclictest0-21swapper/1922:49:2311
28577420750,73data-loop.00-21swapper/1119:05:293
28577420740,72data-loop.00-21swapper/719:09:4317
28577420710,69data-loop.00-21swapper/919:06:0919
149100710700,67AudioIP~allback0-21swapper/819:06:5418
28577420690,67data-loop.00-21swapper/1319:07:015
28577420680,66data-loop.00-21swapper/219:06:5812
149100710680,66AudioIP~allback0-21swapper/1819:07:4710
28577420660,63data-loop.00-21swapper/119:09:131
647520630,53data-loop.00-21swapper/1619:05:168
28577420630,61data-loop.00-21swapper/519:08:2415
28577420620,60data-loop.00-21swapper/019:06:150
28577420610,59data-loop.00-21swapper/1719:09:439
28577420610,59data-loop.00-21swapper/1519:08:237
28577420600,58data-loop.00-21swapper/1019:09:592
149100710600,53AudioIP~allback0-21swapper/319:05:3413
647520570,54data-loop.00-21swapper/619:05:4516
175635299566,31cyclictest0-21swapper/1719:34:249
28577420540,52data-loop.00-21swapper/419:07:0914
1756329995211,40cyclictest0-21swapper/1019:42:342
28577420510,49data-loop.00-21swapper/1419:06:516
1756355994924,24cyclictest1490829-21IPC10
175636099480,47cyclictest1870634-40tracker-miner-f21:11:4311
175635599471,45cyclictest0-21swapper/1820:51:1810
1756340994747,0cyclictest0-21swapper/1322:38:235
1756322994746,1cyclictest1779977-40tracker-miner-f19:35:0718
175635599464,41cyclictest0-21swapper/1822:00:3310
1756355994637,9cyclictest0-21swapper/1819:20:3510
1756355994611,34cyclictest0-21swapper/1823:48:1510
175635299463,42cyclictest0-21swapper/1723:51:239
175635299463,42cyclictest0-21swapper/1723:51:229
1756340994645,1cyclictest1829918-40tracker-miner-f20:28:565
1756335994632,14cyclictest0-21swapper/1221:47:174
1756315994645,0cyclictest0-21swapper/600:32:1516
175635599454,41cyclictest0-21swapper/1823:20:0610
1756355994541,3cyclictest2035069-40tracker-miner-f00:14:5910
1756355994540,5cyclictest0-21swapper/1820:08:1510
1756355994540,4cyclictest0-21swapper/1823:16:4310
175635599453,42cyclictest0-21swapper/1820:33:5810
175635599452,42cyclictest0-21swapper/1823:51:2210
175635599452,42cyclictest0-21swapper/1823:51:2210
175635599451,44cyclictest0-21swapper/1820:57:1610
175634599450,44cyclictest0-21swapper/1521:06:337
175634299450,34cyclictest1491336-21Isolated08:49:046
175634299450,34cyclictest0-21swapper/1421:28:126
1756329994545,0cyclictest0-21swapper/1019:35:062
28577420440,0data-loop.00-21swapper/1923:49:4811
175635599445,38cyclictest0-21swapper/1819:19:4710
175635599444,39cyclictest1898210-40tracker-miner-f21:43:5310
1756355994442,1cyclictest0-21swapper/1822:35:2510
1756355994441,3cyclictest0-21swapper/1823:28:1710
1756355994439,5cyclictest0-21swapper/1821:10:0110
175635599443,41cyclictest0-21swapper/1822:48:3910
1756355994419,25cyclictest0-21swapper/1821:59:3110
175635299443,40cyclictest0-21swapper/1722:00:339
1756352994410,34cyclictest0-21swapper/1723:48:159
175634299440,34cyclictest2030058-40tracker-miner-f00:05:406
175634299440,1cyclictest2052902-40tracker-miner-f00:31:286
1756340994444,0cyclictest0-21swapper/1321:22:405
1756340994443,1cyclictest2048314-40tracker-miner-f00:26:425
1756340994439,4cyclictest0-21swapper/1300:12:475
1756332994443,1cyclictest187050irq/149-eno100:05:393
1756329994444,0cyclictest0-21swapper/1021:25:502
175631999440,36cyclictest2030258-40tracker-miner-f00:07:2217
175631999440,34cyclictest1861478-40tracker-miner-f21:01:0817
1756355994339,4cyclictest1952579-40tracker-miner-f22:41:4910
1756355994339,3cyclictest1490833-21Socket08:49:0410
1756355994338,5cyclictest0-21swapper/1800:01:1210
1756355994338,5cyclictest0-21swapper/1800:01:1210
1756355994338,4cyclictest0-21swapper/1822:33:3510
1756355994338,4cyclictest0-21swapper/1821:22:2510
1756355994338,3cyclictest0-21swapper/1820:45:0010
1756355994338,3cyclictest0-21swapper/1820:44:5910
1756355994337,6cyclictest0-21swapper/1822:53:4710
1756355994335,7cyclictest1490833-21Socket08:49:0410
175635599433,40cyclictest0-21swapper/1819:14:3510
175635599433,39cyclictest0-21swapper/1823:35:5010
175635599433,39cyclictest0-21swapper/1822:17:5610
175635599433,39cyclictest0-21swapper/1800:22:2610
1756352994339,4cyclictest0-21swapper/1700:15:019
1756352994338,5cyclictest0-21swapper/1720:39:079
1756352994338,5cyclictest0-21swapper/1720:39:079
1756352994336,7cyclictest0-21swapper/1720:11:299
1756352994336,6cyclictest0-21swapper/1723:10:319
175635299432,40cyclictest0-21swapper/1719:54:299
175634599439,1cyclictest1816159-40tracker-miner-f20:13:157
1756345994340,1cyclictest0-21swapper/1500:32:157
175634299430,34cyclictest1948137-40tracker-miner-f22:38:016
175634299430,33cyclictest0-21swapper/1421:44:386
1756340994343,0cyclictest0-21swapper/1323:05:315
1756340994343,0cyclictest0-21swapper/1319:25:555
1756332994331,11cyclictest1784124-40tracker-miner-f19:37:063
1756329994342,0cyclictest0-21swapper/1000:20:582
175632299435,35cyclictest201rcu_preempt23:38:2518
1756319994332,10cyclictest0-21swapper/720:55:2117
1756319994331,11cyclictest0-21swapper/719:49:2317
175631999430,32cyclictest2007284-40tracker-miner-f23:41:3617
1756308994342,1cyclictest1843584-40tracker-miner-f20:44:0514
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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