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2026-01-08 - 18:27

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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 rack0slot4s.osadl.org (updated Thu Jan 08, 2026 00:46:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7952212376356,13sleep110-21swapper/1119:08:583
7952212376356,13sleep110-21swapper/1119:08:583
7952342375330,14sleep70-21swapper/719:09:1113
7952342375330,14sleep70-21swapper/719:09:1013
7951602364356,5sleep100-21swapper/1019:08:102
7951602364356,5sleep100-21swapper/1019:08:092
7951692359351,5sleep20-21swapper/219:08:178
7951692359351,5sleep20-21swapper/219:08:178
7952532355336,13sleep90-21swapper/919:09:2815
7952532355336,13sleep90-21swapper/919:09:2815
7951062354333,14sleep150-21swapper/1519:07:267
7951062354333,14sleep150-21swapper/1519:07:267
7950972354333,14sleep80-21swapper/819:07:1814
7950972354333,14sleep80-21swapper/819:07:1814
7951802353333,13sleep130-21swapper/1319:08:285
7951802353333,13sleep130-21swapper/1319:08:285
7950102353333,13sleep140-21swapper/1419:06:046
7950102353333,13sleep140-21swapper/1419:06:046
7929662353327,7sleep120-21swapper/1219:05:144
7929662353327,7sleep120-21swapper/1219:05:144
7951672351330,14sleep00-21swapper/019:08:150
7951672351330,14sleep00-21swapper/019:08:150
7951132351331,13sleep50-21swapper/519:07:3111
7951132351331,13sleep50-21swapper/519:07:3111
7950762350328,14sleep40-21swapper/419:06:5810
7950762350328,14sleep40-21swapper/419:06:5810
7950142349329,13sleep10-21swapper/119:06:081
7950142349329,13sleep10-21swapper/119:06:071
7950362347325,15sleep60-21swapper/619:06:2912
7950362347325,15sleep60-21swapper/619:06:2812
7949732347326,14sleep30-21swapper/319:05:379
7949732347326,14sleep30-21swapper/319:05:379
795619994747,0cyclictest0-21swapper/120:38:321
795619994646,0cyclictest0-21swapper/123:06:441
795619994444,0cyclictest0-21swapper/119:58:371
795622994343,0cyclictest0-21swapper/221:35:008
795619994343,0cyclictest0-21swapper/120:07:031
795631994242,0cyclictest0-21swapper/521:35:0111
795622994242,0cyclictest0-21swapper/221:19:088
795619994242,0cyclictest0-21swapper/123:17:221
795619994242,0cyclictest0-21swapper/121:31:261
795619994242,0cyclictest0-21swapper/121:16:141
795619994242,0cyclictest0-21swapper/120:14:461
795619994242,0cyclictest0-21swapper/119:39:481
795631994140,1cyclictest0-21swapper/500:10:1211
795631994040,0cyclictest0-21swapper/520:26:4211
795622994040,0cyclictest0-21swapper/222:56:218
795622994040,0cyclictest0-21swapper/220:03:588
795622994040,0cyclictest0-21swapper/219:58:368
795619994040,0cyclictest0-21swapper/119:20:041
795619994040,0cyclictest0-21swapper/100:33:511
795631993939,0cyclictest0-21swapper/522:46:3211
795622993939,0cyclictest0-21swapper/222:28:218
795622993939,0cyclictest0-21swapper/222:20:568
795622993939,0cyclictest0-21swapper/221:55:518
795622993939,0cyclictest0-21swapper/219:22:128
795631993838,0cyclictest0-21swapper/522:40:5711
795631993838,0cyclictest0-21swapper/519:58:3611
795631993838,0cyclictest0-21swapper/500:27:1911
795622993838,0cyclictest0-21swapper/223:00:478
795622993838,0cyclictest0-21swapper/222:10:498
795622993838,0cyclictest0-21swapper/222:10:488
795622993838,0cyclictest0-21swapper/221:31:268
795622993838,0cyclictest0-21swapper/220:14:478
795622993838,0cyclictest0-21swapper/220:07:028
795622993838,0cyclictest0-21swapper/219:49:028
795619993838,0cyclictest0-21swapper/122:56:041
795631993737,0cyclictest0-21swapper/522:25:1811
795631993737,0cyclictest0-21swapper/500:03:5211
795631993736,0cyclictest907587-21kworker/u32:0+events_unbound22:20:5711
795622993737,0cyclictest0-21swapper/220:54:348
795622993737,0cyclictest0-21swapper/219:39:488
795619993737,0cyclictest0-21swapper/121:37:201
795619993737,0cyclictest0-21swapper/119:33:101
795619993737,0cyclictest0-21swapper/100:25:321
79561999370,37cyclictest0-21swapper/100:37:091
795631993635,1cyclictest0-21swapper/523:17:2211
795622993636,0cyclictest0-21swapper/223:52:138
795622993636,0cyclictest0-21swapper/222:41:488
795622993636,0cyclictest0-21swapper/222:37:028
795631993535,0cyclictest0-21swapper/521:55:1811
795631993534,1cyclictest957190-21kworker/5:0-mm_percpu_wq23:52:1211
795622993535,0cyclictest0-21swapper/220:27:588
795622993535,0cyclictest0-21swapper/200:33:508
795622993535,0cyclictest0-21swapper/200:08:328
79566299340,28cyclictest0-21swapper/1422:45:156
795631993434,0cyclictest0-21swapper/522:37:0311
795631993434,0cyclictest0-21swapper/519:14:4611
795622993434,0cyclictest0-21swapper/223:39:408
795622993434,0cyclictest0-21swapper/200:37:098
795631993333,0cyclictest0-21swapper/522:08:0411
795631993333,0cyclictest0-21swapper/519:20:0411
795622993333,0cyclictest0-21swapper/219:51:088
795622993333,0cyclictest0-21swapper/200:25:328
79561999339,11cyclictest0-21swapper/121:47:401
795619993333,0cyclictest0-21swapper/122:22:441
795619993333,0cyclictest0-21swapper/121:11:401
795619993327,6cyclictest0-21swapper/122:46:331
795616993333,0cyclictest0-21swapper/020:45:160
79566599320,29cyclictest0-21swapper/1520:20:137
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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