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2026-04-30 - 11:25

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 30, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
248599970,6rtkit-daemon0-21swapper/121:05:171
248599930,7rtkit-daemon0-21swapper/121:06:241
248599920,6rtkit-daemon0-21swapper/120:02:041
248599920,4rtkit-daemon2484-21rtkit-daemon17:18:331
248599910,6rtkit-daemon0-21swapper/120:02:122
248599910,4rtkit-daemon2484-21rtkit-daemon17:55:171
248599900,6rtkit-daemon0-21swapper/117:06:112
248599900,4rtkit-daemon2484-21rtkit-daemon19:53:193
248599900,4rtkit-daemon2484-21rtkit-daemon17:47:391
248599890,5rtkit-daemon2484-21rtkit-daemon20:59:091
248599890,5rtkit-daemon2484-21rtkit-daemon20:59:091
248599890,5rtkit-daemon2484-21rtkit-daemon18:54:441
248599890,5rtkit-daemon2484-21rtkit-daemon18:54:441
248599890,4rtkit-daemon2484-21rtkit-daemon21:11:011
248599890,4rtkit-daemon2484-21rtkit-daemon18:56:221
248599890,4rtkit-daemon2484-21rtkit-daemon18:43:371
248599880,6rtkit-daemon0-21swapper/120:46:172
248599880,5rtkit-daemon2484-21rtkit-daemon18:47:451
248599880,4rtkit-daemon2484-21rtkit-daemon20:50:321
248599880,4rtkit-daemon2484-21rtkit-daemon18:09:391
248599880,4rtkit-daemon2484-21rtkit-daemon18:09:391
248599850,7rtkit-daemon0-21swapper/017:31:032
248599850,4rtkit-daemon2484-21rtkit-daemon17:07:481
248599840,7rtkit-daemon0-21swapper/020:53:472
248599840,4rtkit-daemon2484-21rtkit-daemon20:46:253
248599830,8rtkit-daemon0-21swapper/021:20:162
248599830,7rtkit-daemon0-21swapper/019:42:272
248599830,7rtkit-daemon0-21swapper/018:00:462
248599810,5rtkit-daemon2484-21rtkit-daemon17:12:411
248599810,4rtkit-daemon2484-21rtkit-daemon18:40:071
248599810,4rtkit-daemon2484-21rtkit-daemon17:20:551
248599800,4rtkit-daemon2484-21rtkit-daemon18:16:011
248599790,6rtkit-daemon0-21swapper/021:10:312
248599790,5rtkit-daemon2484-21rtkit-daemon20:40:031
248599790,5rtkit-daemon2484-21rtkit-daemon20:34:031
248599790,5rtkit-daemon2484-21rtkit-daemon20:26:331
248599780,4rtkit-daemon2484-21rtkit-daemon21:16:541
248599770,4rtkit-daemon2484-21rtkit-daemon17:59:461
248599770,4rtkit-daemon2484-21rtkit-daemon17:31:181
248599760,4rtkit-daemon2484-21rtkit-daemon20:20:481
248599760,4rtkit-daemon2484-21rtkit-daemon20:09:411
248599760,4rtkit-daemon2484-21rtkit-daemon19:50:351
248599760,4rtkit-daemon2484-21rtkit-daemon17:40:551
248599760,11rtkit-daemon34-21rcuc/321:21:013
2693627211,18sleep20-21swapper/216:55:502
248599720,8rtkit-daemon0-21swapper/019:00:441
248599720,6rtkit-daemon0-21swapper/117:05:110
248599710,6rtkit-daemon2484-21rtkit-daemon19:57:573
248599690,7rtkit-daemon0-21swapper/017:26:181
248599690,7rtkit-daemon0-21swapper/017:26:181
248599690,6rtkit-daemon2484-21rtkit-daemon18:11:383
248599690,5rtkit-daemon2484-21rtkit-daemon19:30:353
248599690,5rtkit-daemon2484-21rtkit-daemon19:30:353
248599680,4rtkit-daemon2484-21rtkit-daemon20:29:113
248599680,4rtkit-daemon2484-21rtkit-daemon20:11:263
248599670,5rtkit-daemon2484-21rtkit-daemon20:41:033
248599670,5rtkit-daemon2484-21rtkit-daemon19:42:423
248599670,4rtkit-daemon2484-21rtkit-daemon17:09:483
28541996620,40cyclictest15163-21yum-updatesd-he21:45:401
28543996537,12cyclictest0-21swapper/222:00:392
248599650,4rtkit-daemon2484-21rtkit-daemon21:03:243
248599650,4rtkit-daemon2484-21rtkit-daemon17:33:023
28543996438,12cyclictest0-21swapper/219:32:372
28543996438,12cyclictest0-21swapper/219:32:372
266062643,53sleep20-21swapper/221:02:482
248599640,5rtkit-daemon2484-21rtkit-daemon19:39:051
2854399634,44cyclictest0-21swapper/222:07:532
248599630,2rtkit-daemon0-21swapper/319:24:213
2854399624,50cyclictest0-21swapper/219:20:432
273142625,48sleep127374-21iostat16:55:531
248599620,7rtkit-daemon0-21swapper/319:29:583
248599620,6rtkit-daemon0-21swapper/019:41:571
248599620,4rtkit-daemon37-21ksoftirqd/319:37:283
248599620,10rtkit-daemon0-21swapper/319:13:363
313922613,10sleep20-21swapper/222:20:212
313922613,10sleep20-21swapper/222:20:212
28537996145,11cyclictest0-21swapper/021:44:060
28537996145,11cyclictest0-21swapper/019:20:580
248599610,9rtkit-daemon0-21swapper/319:17:583
248599610,9rtkit-daemon0-21swapper/317:01:193
248599610,7rtkit-daemon0-21swapper/319:06:213
248599610,7rtkit-daemon0-21swapper/318:19:163
248599610,6rtkit-daemon0-21swapper/320:30:563
248599610,4rtkit-daemon15004-21taskset17:36:253
93562603,50sleep00-21swapper/021:33:260
285952603,12sleep20-21swapper/222:10:572
285952603,12sleep20-21swapper/222:10:572
2853799606,23cyclictest0-21swapper/020:00:280
28537996043,10cyclictest21898-21grep19:00:440
248599600,9rtkit-daemon0-21swapper/017:13:112
248599600,8rtkit-daemon0-21swapper/020:39:402
248599600,7rtkit-daemon0-21swapper/017:50:092
302182593,12sleep30-21swapper/320:06:093
28537995944,10cyclictest0-21swapper/021:20:430
2853799594,46cyclictest0-21swapper/022:10:360
2853799594,46cyclictest0-21swapper/022:10:360
28537995938,14cyclictest0-21swapper/019:07:530
28537995937,15cyclictest0-21swapper/021:00:500
248599590,9rtkit-daemon0-21swapper/017:59:312
248599590,8rtkit-daemon0-21swapper/020:40:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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