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2026-09-02 - 01:08

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 Tue Sep 01, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
226709910738,14cyclictest0-21swapper/210:30:202
2194991010,8rtkit-daemon0-21swapper/109:58:511
22668999910,72cyclictest0-21swapper/010:50:340
22668999910,72cyclictest0-21swapper/010:50:340
2266899954,70cyclictest0-21swapper/008:25:210
2266899949,70cyclictest0-21swapper/009:10:420
2266899944,71cyclictest0-21swapper/007:10:430
2266899934,73cyclictest0-21swapper/009:00:170
22668999219,56cyclictest0-21swapper/009:40:210
2266899915,69cyclictest0-21swapper/008:52:000
2266899915,69cyclictest0-21swapper/008:52:000
2266899914,69cyclictest0-21swapper/009:16:190
2266899914,63cyclictest0-21swapper/008:55:320
2266899914,21cyclictest0-21swapper/011:07:030
2266899909,65cyclictest0-21swapper/008:30:410
2266899904,65cyclictest0-21swapper/010:30:520
2266899904,21cyclictest0-21swapper/008:05:490
22668998917,8cyclictest15665-21ssh07:40:200
2266899884,77cyclictest0-21swapper/010:20:280
2266899884,68cyclictest0-21swapper/009:34:300
2266899884,67cyclictest0-21swapper/007:55:430
2266899884,63cyclictest0-21swapper/008:02:520
2266899884,22cyclictest29337-21timerwakeupswit10:25:360
2266899884,20cyclictest0-21swapper/009:47:380
2266899883,8cyclictest107550irq/46-eth008:38:040
2266899883,68cyclictest0-21swapper/010:10:040
2266899883,21cyclictest0-21swapper/009:36:100
2266899883,12cyclictest0-21swapper/007:52:440
2266899878,20cyclictest21880-21expr10:15:230
2266899874,68cyclictest0-21swapper/008:21:440
2266899874,67cyclictest0-21swapper/006:35:220
2266899874,25cyclictest5314-21aten_r1power_fr10:40:140
2266899873,77cyclictest0-21swapper/010:45:140
2266899873,77cyclictest0-21swapper/008:47:110
2266899873,23cyclictest0-21swapper/009:05:160
2266899868,63cyclictest0-21swapper/008:40:470
2266899864,75cyclictest0-21swapper/010:36:340
2266899864,65cyclictest0-21swapper/010:00:220
2266899864,62cyclictest0-21swapper/010:56:240
2266899864,60cyclictest0-21swapper/007:08:540
2266899864,22cyclictest0-21swapper/008:10:570
2266899864,22cyclictest0-21swapper/008:10:570
219499860,27rtkit-daemon15405-21diskmemload10:30:341
2266899854,73cyclictest0-21swapper/009:20:220
2266899854,64cyclictest0-21swapper/009:28:330
2266899854,60cyclictest0-21swapper/009:57:410
2266899854,59cyclictest0-21swapper/006:55:110
2266899854,59cyclictest0-21swapper/006:55:110
2266899853,61cyclictest0-21swapper/007:48:190
2266899853,21cyclictest0-21swapper/008:17:350
2266899844,73cyclictest0-21swapper/010:10:330
2266899844,73cyclictest0-21swapper/010:10:330
2266899844,72cyclictest0-21swapper/006:45:420
2266899844,59cyclictest0-21swapper/007:15:330
2266899843,14cyclictest0-21swapper/011:00:360
2266899834,71cyclictest0-21swapper/007:00:330
2266899833,65cyclictest0-21swapper/006:00:260
22668998320,7cyclictest28576-21latency_hist07:00:110
22668998319,9cyclictest1227-21runrttasks06:06:310
22668998319,9cyclictest1227-21runrttasks06:06:310
219499830,28rtkit-daemon0-21swapper/010:15:201
2266899825,70cyclictest0-21swapper/006:25:400
2266899824,63cyclictest0-21swapper/009:51:100
2266899814,24cyclictest0-21swapper/007:30:090
2266899804,13cyclictest0-21swapper/005:40:240
22668998021,53cyclictest0-21swapper/007:20:260
2266899795,14cyclictest0-21swapper/005:40:140
2266899784,9cyclictest107550irq/46-eth005:45:340
219499780,26rtkit-daemon0-21swapper/010:08:501
2266899774,66cyclictest0-21swapper/005:55:270
2266899754,65cyclictest0-21swapper/006:30:380
2266899754,21cyclictest0-21swapper/005:50:490
22668997517,41cyclictest0-21swapper/006:22:250
2266999744,31cyclictest0-21swapper/110:10:331
2266999744,31cyclictest0-21swapper/110:10:331
2266899744,63cyclictest0-21swapper/007:35:330
2266899744,63cyclictest0-21swapper/007:35:330
22668997318,9cyclictest7500-21cpu06:15:260
2266899729,13cyclictest0-21swapper/007:30:280
2266899729,12cyclictest0-21swapper/006:40:350
2266899724,61cyclictest0-21swapper/006:12:100
219499720,3rtkit-daemon0-21swapper/108:07:481
219499690,6rtkit-daemon2193-21rtkit-daemon06:10:001
219499690,6rtkit-daemon2193-21rtkit-daemon06:10:001
256442680,3sleep325712-21df_abs05:45:293
219499680,8rtkit-daemon0-21swapper/011:00:181
219499660,6rtkit-daemon26604-21yum-updatesd-he10:22:201
2266999644,50cyclictest21214-21ssh08:35:371
2266999644,13cyclictest0-21swapper/108:35:061
22670996342,13cyclictest0-21swapper/207:00:302
2266999634,36cyclictest0-21swapper/110:27:431
219499630,9rtkit-daemon0-21swapper/010:39:271
219499630,12rtkit-daemon0-21swapper/106:29:361
2266999625,38cyclictest0-21swapper/107:56:321
2266999624,48cyclictest22892-21df_abs07:50:251
2266999623,43cyclictest0-21swapper/108:44:591
219499620,7rtkit-daemon0-21swapper/010:42:561
22671996115,27cyclictest26046-21cpuspeed_turbos07:55:233
22670996146,8cyclictest20405-21diskstats08:35:242
22670996138,18cyclictest0-21swapper/211:00:342
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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