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2025-12-10 - 07:35

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 Wed Dec 10, 2025 00:46:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
251340299650,1cyclictest2657052-40tracker-miner-f21:53:049
251337599638,35cyclictest0-21swapper/719:51:1717
2513402995714,42cyclictest0-21swapper/1723:30:259
2513360995624,31cyclictest1185815-21Isolated09:17:1812
2513364995514,3cyclictest0-21swapper/319:24:0113
2513364995514,3cyclictest0-21swapper/319:24:0013
2513360995525,1cyclictest0-21swapper/200:25:2312
2513386995415,6cyclictest0-21swapper/1123:30:253
251244225442,7sleep190-21swapper/1919:05:4411
251244225442,7sleep190-21swapper/1919:05:4311
251336499517,43cyclictest0-21swapper/300:13:1713
2513360995125,25cyclictest0-21swapper/222:08:5112
251287125038,7sleep60-21swapper/619:09:3216
251287125038,7sleep60-21swapper/619:09:3216
2513358994949,0cyclictest0-21swapper/100:13:171
2513354994949,0cyclictest0-21swapper/000:13:170
251336999478,38cyclictest2606072-21StreamT~ns15
2513360994744,1cyclictest0-21swapper/219:39:0812
2513360994720,27cyclictest0-21swapper/200:36:4512
251340299460,38cyclictest0-21swapper/1723:05:059
251340299460,34cyclictest1185601-21firefox19:54:199
2513397994643,1cyclictest0-21swapper/1519:39:097
2513387994644,1cyclictest205950irq/149-eno123:42:594
251336999462,43cyclictest0-21swapper/500:13:1615
2513360994646,0cyclictest0-21swapper/223:48:0212
2513360994643,1cyclictest1185977-21Isolated09:17:1812
2513360994628,1cyclictest0-21swapper/220:55:2712
2513360994628,17cyclictest0-21swapper/221:07:2312
251280824644,1sleep40-21swapper/419:08:4914
251280824644,1sleep40-21swapper/419:08:4814
251340899458,37cyclictest1185640-21IPDL09:17:1811
251340899458,36cyclictest2639541-40tracker-miner-f21:31:1211
2513397994542,1cyclictest0-21swapper/1500:33:307
2513391994542,1cyclictest1185977-21Isolated09:17:185
2513391994541,1cyclictest0-21swapper/1300:33:305
2513370994545,0cyclictest0-21swapper/620:16:0916
2513360994532,0cyclictest0-21swapper/221:10:4512
2513360994514,30cyclictest0-21swapper/219:25:1512
2513408994443,0cyclictest0-21swapper/1919:39:0911
251340299440,43cyclictest0-21swapper/1721:17:389
251340299440,40cyclictest1185977-21Isolated09:17:189
251340299440,40cyclictest1185977-21Isolated09:17:189
251339799441,42cyclictest0-21swapper/1520:55:017
251338799449,33cyclictest205950irq/149-eno119:54:204
2513387994444,0cyclictest205950irq/149-eno120:40:044
2513387994443,1cyclictest205950irq/149-eno120:26:244
2513376994444,0cyclictest0-21swapper/819:44:1318
251337099440,43cyclictest0-21swapper/600:04:2916
251337099440,0cyclictest0-21swapper/623:58:0816
251336599440,43cyclictest1185639-21Socket09:17:1814
251336499447,34cyclictest0-21swapper/322:28:2613
2513364994442,1cyclictest1185827-21StyleThread#319:55:4713
198398440,42rtkit-daemon0-21swapper/1119:05:073
198398440,42rtkit-daemon0-21swapper/1119:05:063
251340899439,34cyclictest2557418-40tracker-miner-f19:59:2311
2513408994340,1cyclictest0-21swapper/1900:33:2911
251340299430,39cyclictest0-21swapper/1721:32:529
251340299430,38cyclictest0-21swapper/1721:26:549
2513399994340,0cyclictest0-21swapper/1619:39:098
2513387994342,1cyclictest205950irq/149-eno122:08:494
251338699430,39cyclictest0-21swapper/1121:12:323
2513380994342,1cyclictest0-21swapper/922:19:0219
2513376994343,0cyclictest0-21swapper/819:35:2618
2513376994340,1cyclictest2722252-40tracker-miner-f23:08:5118
2513376994339,3cyclictest1801-21dbus-broker21:07:2018
251337699433,4cyclictest1185640-21IPDL09:17:1818
251337699433,4cyclictest1185640-21IPDL09:17:1818
2513375994343,0cyclictest0-21swapper/719:24:0117
2513375994343,0cyclictest0-21swapper/719:24:0017
2513375994343,0cyclictest0-21swapper/700:06:1117
2513370994343,0cyclictest0-21swapper/621:20:5416
251336499437,34cyclictest1185880-21WebExtensions21:58:4413
2513364994343,0cyclictest0-21swapper/323:47:5413
2513364994343,0cyclictest0-21swapper/319:11:0513
2513364994343,0cyclictest0-21swapper/319:11:0513
2513364994341,1cyclictest2517376-40tracker-miner-f19:15:0513
2513364994341,1cyclictest2517376-40tracker-miner-f19:15:0513
2513364994341,1cyclictest1184557-21WebExtensions20:11:0813
2513364994341,1cyclictest0-21swapper/322:13:5913
2513360994316,26cyclictest0-21swapper/220:26:1912
2513354994343,0cyclictest0-21swapper/023:06:180
251269624338,3sleep30-21swapper/319:07:4813
251269624338,3sleep30-21swapper/319:07:4713
118376820430,41data-loop.00-21swapper/719:06:4317
118376820430,41data-loop.00-21swapper/719:06:4317
118376820430,40data-loop.00-21swapper/1719:06:439
118376820430,40data-loop.00-21swapper/1719:06:439
251340899429,33cyclictest2735246-40tracker-miner-f23:23:5011
2513402994232,9cyclictest0-21swapper/1721:48:169
2513402994232,8cyclictest0-21swapper/1700:24:429
251340299420,34cyclictest2644033-40tracker-miner-f21:37:569
251340299420,33cyclictest0-21swapper/1720:31:289
2513399994239,1cyclictest0-21swapper/1600:33:308
2513397994237,3cyclictest1185639-21Socket09:17:187
2513387994241,1cyclictest205950irq/149-eno123:37:554
2513376994242,0cyclictest0-21swapper/823:50:5918
2513375994242,0cyclictest0-21swapper/700:36:4717
2513370994242,0cyclictest0-21swapper/619:39:1116
251337099420,0cyclictest0-21swapper/620:41:4116
251336999420,1cyclictest0-21swapper/520:16:0915
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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