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2026-04-28 - 09:54

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 Apr 28, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1580899964,73cyclictest31221ssh20:27:402
1580899964,73cyclictest16461-21ssh20:47:402
15808999616,9cyclictest26279-21ssh21:02:352
15808999611,13cyclictest0-21swapper/220:02:462
1580899944,66cyclictest0-21swapper/221:23:072
1580899944,24cyclictest7280-21yum-updatesd-he19:47:322
248599920,4rtkit-daemon2484-21rtkit-daemon22:12:373
1580899929,63cyclictest15061-21taskset22:22:272
1580899925,70cyclictest0-21swapper/219:18:262
1580899925,68cyclictest0-21swapper/220:27:192
1580899925,68cyclictest0-21swapper/220:27:192
1580899924,69cyclictest0-21swapper/221:38:132
1580899924,65cyclictest0-21swapper/219:53:222
1580899924,63cyclictest0-21swapper/221:42:472
1580899924,19cyclictest25673-21kworker/2:122:22:052
1580899915,67cyclictest0-21swapper/217:12:372
1580899914,66cyclictest0-21swapper/220:07:542
1580899914,62cyclictest0-21swapper/217:48:502
15808999118,48cyclictest0-21swapper/219:38:062
1580899907,61cyclictest0-21swapper/220:54:202
1580899905,61cyclictest0-21swapper/221:56:032
1580899905,61cyclictest0-21swapper/221:56:032
1580899904,69cyclictest0-21swapper/219:27:562
1580899904,63cyclictest0-21swapper/222:09:542
1580899904,62cyclictest0-21swapper/221:48:462
1580899904,62cyclictest0-21swapper/219:13:272
1580899904,13cyclictest14198-21munin-node21:32:342
1580899903,66cyclictest0-21swapper/221:07:402
1580899899,12cyclictest0-21swapper/221:57:462
1580899895,59cyclictest0-21swapper/222:13:552
1580899894,61cyclictest0-21swapper/219:42:312
1580899894,61cyclictest0-21swapper/219:42:312
1580899893,24cyclictest13324-21grep20:42:442
15808998914,10cyclictest0-21swapper/221:27:192
1580899885,60cyclictest0-21swapper/219:35:042
1580899884,68cyclictest0-21swapper/220:57:512
1580899884,61cyclictest0-21swapper/221:12:552
1580899884,58cyclictest0-21swapper/218:52:432
1580899884,58cyclictest0-21swapper/218:32:372
1580899884,22cyclictest0-21swapper/220:14:582
1580899874,67cyclictest0-21swapper/220:37:432
1580899874,63cyclictest0-21swapper/217:38:482
1580899874,63cyclictest0-21swapper/217:38:482
1580899874,59cyclictest0-21swapper/217:07:532
15808998719,48cyclictest0-21swapper/217:57:582
15808998713,12cyclictest0-21swapper/219:57:542
15808998712,9cyclictest19998-21unixbench_multi22:27:482
1580899869,60cyclictest0-21swapper/221:17:412
1580899864,63cyclictest0-21swapper/217:28:462
1580899864,62cyclictest0-21swapper/218:07:562
1580899864,60cyclictest0-21swapper/219:11:272
1580899864,60cyclictest0-21swapper/219:06:252
1580899864,58cyclictest0-21swapper/219:24:442
15808998620,48cyclictest1492-21yum-updatesd-he18:47:402
15808998616,54cyclictest0-21swapper/222:06:252
15808998613,11cyclictest0-21swapper/220:34:402
15803998629,37cyclictest0-21swapper/019:42:530
15803998629,37cyclictest0-21swapper/019:42:530
1580899854,62cyclictest0-21swapper/218:57:432
1580899854,22cyclictest17534-21kworker/2:020:17:372
15803998528,48cyclictest0-21swapper/022:22:360
1580899845,56cyclictest0-21swapper/218:22:552
1580899845,56cyclictest0-21swapper/218:22:552
15803998433,30cyclictest0-21swapper/021:44:200
15803998432,43cyclictest0-21swapper/020:47:310
15803998334,41cyclictest0-21swapper/019:37:500
15803998333,31cyclictest5815-21ssh21:20:010
15803998235,39cyclictest12163-21cut22:17:330
15803998233,19cyclictest0-21swapper/019:25:050
15803998231,32cyclictest8704-21ssh19:47:510
1580899814,60cyclictest0-21swapper/218:17:402
1580899814,60cyclictest0-21swapper/218:17:402
1580899814,22cyclictest0-21swapper/217:18:452
1580899814,16cyclictest0-21swapper/217:22:422
15808998126,48cyclictest32133-21fschecks_count18:42:392
15803998136,36cyclictest1419-21runrttasks21:33:170
15803998134,39cyclictest26214-21aten2.4-expect19:27:320
15803998131,43cyclictest0-21swapper/020:02:510
15803998130,31cyclictest27493-21munin-node20:17:500
15803998129,45cyclictest0-21swapper/020:12:190
15803998129,44cyclictest0-21swapper/019:32:360
15803998125,48cyclictest0-21swapper/021:47:370
1580899804,58cyclictest0-21swapper/217:07:272
15803998031,42cyclictest0-21swapper/022:07:290
15803998030,42cyclictest0-21swapper/022:02:500
15803998025,47cyclictest0-21swapper/021:32:070
15803997930,42cyclictest15928-21rm19:57:550
15803997930,42cyclictest0-21swapper/021:22:420
15803997930,42cyclictest0-21swapper/018:42:360
15803997929,42cyclictest0-21swapper/017:47:360
15803997928,43cyclictest16315-21ssh19:12:370
15803997927,44cyclictest0-21swapper/022:12:350
15803997927,34cyclictest0-21swapper/022:31:090
15803997926,46cyclictest0-21swapper/020:35:500
15803997926,32cyclictest0-21swapper/019:52:370
15803997924,46cyclictest0-21swapper/020:17:140
1580899784,67cyclictest0-21swapper/218:37:472
1580899784,13cyclictest0-21swapper/217:02:272
1580899784,13cyclictest0-21swapper/217:02:272
15803997857,14cyclictest27202-21cpuspeed_turbos21:52:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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