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2026-04-16 - 23:03

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, 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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  Intel
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Thu Apr 16, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2408521100,10sleep22995699cyclictest08:48:342
29953991004,78cyclictest0-21swapper/008:27:360
2995399984,29cyclictest0-21swapper/010:38:030
29953999718,13cyclictest0-21swapper/008:03:290
29953999718,13cyclictest0-21swapper/008:03:290
2995399965,27cyclictest0-21swapper/010:18:270
2995399964,32cyclictest0-21swapper/009:31:010
2995399964,32cyclictest0-21swapper/009:31:010
2995399964,27cyclictest0-21swapper/005:28:400
29953999621,12cyclictest0-21swapper/009:19:200
29953999511,23cyclictest22332-21kworker/0:110:28:120
2995399944,27cyclictest0-21swapper/007:03:380
2995399944,26cyclictest0-21swapper/010:17:580
29953999415,23cyclictest0-21swapper/010:06:300
29953999415,23cyclictest0-21swapper/010:06:300
2995399936,26cyclictest0-21swapper/010:08:340
2995399936,26cyclictest0-21swapper/010:08:340
2995399934,26cyclictest0-21swapper/009:52:340
2995399927,23cyclictest0-21swapper/009:37:440
2995399914,78cyclictest0-21swapper/005:23:140
2995399914,28cyclictest0-21swapper/005:58:300
29953999120,12cyclictest0-21swapper/007:53:310
2995399906,24cyclictest0-21swapper/008:15:490
2995399904,27cyclictest0-21swapper/010:02:530
2995399903,69cyclictest0-21swapper/008:36:470
2995399894,76cyclictest0-21swapper/006:53:360
2995399894,31cyclictest0-21swapper/007:13:100
2995399893,27cyclictest0-21swapper/009:08:230
29953998913,23cyclictest0-21swapper/005:23:310
2995399889,11cyclictest0-21swapper/008:43:320
2995399889,11cyclictest0-21swapper/008:43:320
2995399887,25cyclictest0-21swapper/009:42:190
2995399887,24cyclictest0-21swapper/009:55:480
2995399885,25cyclictest0-21swapper/007:27:240
2995399885,25cyclictest0-21swapper/007:27:240
2995399884,28cyclictest0-21swapper/007:58:250
2995399884,27cyclictest0-21swapper/006:08:340
2995399884,27cyclictest0-21swapper/006:08:340
2995399884,12cyclictest0-21swapper/010:24:180
2995399883,27cyclictest0-21swapper/008:48:330
2995399883,27cyclictest0-21swapper/008:08:240
2995399883,27cyclictest0-21swapper/007:43:340
29953998826,55cyclictest0-21swapper/010:38:140
29953998822,9cyclictest950-21munin-node07:28:410
248599880,11rtkit-daemon0-21swapper/005:13:310
2995399879,9cyclictest121850irq/46-eth009:44:410
2995399878,22cyclictest0-21swapper/007:35:410
2995399874,26cyclictest0-21swapper/006:06:000
2995399869,9cyclictest31092-21turbostat06:23:120
2995399864,74cyclictest0-21swapper/007:51:520
2995399864,26cyclictest0-21swapper/009:27:460
2995399864,26cyclictest0-21swapper/009:27:460
2995399864,12cyclictest0-21swapper/008:30:130
29953998619,12cyclictest0-21swapper/007:38:420
2995399859,9cyclictest27452-21ssh07:18:330
2995399857,24cyclictest0-21swapper/008:41:130
2995399854,73cyclictest0-21swapper/006:58:400
2995399854,72cyclictest0-21swapper/009:03:320
29953998518,13cyclictest0-21swapper/009:14:150
2995399844,28cyclictest0-21swapper/005:33:360
2995399844,28cyclictest0-21swapper/005:33:360
2995399844,27cyclictest0-21swapper/006:51:070
2995399844,27cyclictest0-21swapper/006:51:070
2995399834,12cyclictest0-21swapper/006:13:380
29953998320,11cyclictest0-21swapper/006:23:300
29953998315,9cyclictest0-21swapper/008:53:380
2995399829,9cyclictest3030-21ssh08:18:230
2995399825,11cyclictest0-21swapper/008:58:220
2995399824,16cyclictest0-21swapper/005:57:120
2995399824,12cyclictest0-21swapper/007:14:060
2995399823,9cyclictest6934-21fschecks_time06:38:300
2995399823,24cyclictest0-21swapper/006:28:220
29953998111,13cyclictest0-21swapper/005:45:570
2995399805,25cyclictest0-21swapper/006:46:060
29953998021,7cyclictest16743-21latency_hist05:53:140
2995399784,12cyclictest0-21swapper/006:36:050
2995399782,23cyclictest0-21swapper/005:13:140
2995399764,30cyclictest0-21swapper/005:38:270
248599720,5rtkit-daemon2484-21rtkit-daemon09:28:213
248599720,5rtkit-daemon2484-21rtkit-daemon09:28:213
2995499684,54cyclictest13202-21df_abs08:33:231
2995499674,55cyclictest0-21swapper/109:58:031
29954996724,35cyclictest850-21unixbench_multi08:13:411
29957996546,11cyclictest21108-21ssh07:58:013
29957996545,11cyclictest1565-21timerwakeupswit10:38:363
2995499643,24cyclictest24892-1kworker/1:1H07:23:091
2995799632,56cyclictest0-21swapper/307:33:363
2995499633,52cyclictest0-21swapper/107:38:291
2995499633,11cyclictest30261-21grep08:58:251
29957996241,12cyclictest29686-21python08:08:403
29957996221,24cyclictest0-21swapper/308:17:003
29954996244,11cyclictest6824-21gltestperf08:23:251
248599620,5rtkit-daemon2484-21rtkit-daemon08:13:312
2995799614,13cyclictest0-21swapper/308:23:393
2995499614,50cyclictest13014-21timerwakeupswit07:43:421
67152604,49sleep10-21swapper/109:58:331
324862604,13sleep30-21swapper/307:26:033
324862604,13sleep30-21swapper/307:26:033
29957996041,12cyclictest0-21swapper/307:48:363
2995799603,50cyclictest0-21swapper/307:45:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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