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2026-05-19 - 22:54

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 May 19, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
467099965,38cyclictest0-21swapper/007:28:210
467099914,34cyclictest0-21swapper/008:54:550
4670999121,13cyclictest0-21swapper/008:17:190
4670999121,13cyclictest0-21swapper/008:17:190
4670999117,21cyclictest0-21swapper/007:01:060
467099904,32cyclictest0-21swapper/009:57:150
467099873,21cyclictest0-21swapper/007:33:530
4670998725,12cyclictest0-21swapper/008:13:110
248599870,6rtkit-daemon2484-21rtkit-daemon06:53:200
248599870,6rtkit-daemon2484-21rtkit-daemon06:53:200
467099854,34cyclictest0-21swapper/009:03:280
467099854,34cyclictest0-21swapper/009:03:280
7502810,5sleep20-21swapper/206:47:102
248599810,27rtkit-daemon28214-21yum-updatesd-he05:28:231
248599810,27rtkit-daemon28214-21yum-updatesd-he05:28:231
248599700,8rtkit-daemon0-21swapper/005:02:321
248599670,7rtkit-daemon0-21swapper/007:00:422
209712670,5sleep020972-21wc09:37:260
467699636,50cyclictest29703-21diskmemload06:42:093
248599630,7rtkit-daemon0-21swapper/005:53:301
248599620,6rtkit-daemon0-21swapper/005:17:391
4676996128,27cyclictest0-21swapper/307:01:533
467599594,49cyclictest0-21swapper/208:17:212
467599594,49cyclictest0-21swapper/208:17:212
4675995912,40cyclictest7614-21sed07:42:262
248599590,4rtkit-daemon15-21rcuc/008:43:531
467699584,46cyclictest0-21swapper/308:02:173
467699583,48cyclictest29703-21diskmemload06:52:263
467699583,48cyclictest29703-21diskmemload06:52:263
467599588,43cyclictest0-21swapper/208:16:582
467599586,46cyclictest0-21swapper/208:57:352
467599582,50cyclictest1200-21grep07:32:362
4675995812,39cyclictest19896-21latency07:12:322
467499586,27cyclictest1419-21runrttasks09:47:141
248599580,5rtkit-daemon0-21swapper/005:45:451
467699575,44cyclictest55951ssh07:39:033
467699575,44cyclictest55951ssh07:39:033
467699573,46cyclictest0-21swapper/308:24:073
467599576,45cyclictest0-21swapper/206:56:512
467599576,45cyclictest0-21swapper/206:56:512
467599573,48cyclictest0-21swapper/207:05:462
4675995715,36cyclictest1419-21runrttasks09:05:012
4675995715,36cyclictest1419-21runrttasks09:05:012
4675995714,37cyclictest29199-21cpuspeed_turbos07:27:242
4675995713,37cyclictest0-21swapper/206:21:112
4674995725,13cyclictest0-21swapper/104:57:421
4674995721,17cyclictest0-21swapper/107:42:391
4674995718,31cyclictest21236-21proc_pri09:37:301
467099574,36cyclictest0-21swapper/007:02:260
248599570,6rtkit-daemon0-21swapper/004:43:171
248599570,6rtkit-daemon0-21swapper/004:43:171
248599570,19rtkit-daemon2484-21rtkit-daemon08:35:233
4676995612,37cyclictest31961-21crond07:32:083
4676995610,39cyclictest6679-21cpuspeed_turbos09:17:173
467599569,39cyclictest0-21swapper/208:45:462
467599568,42cyclictest0-21swapper/209:47:212
467599565,44cyclictest18626-21cpuspeed_turbos08:47:202
467599564,46cyclictest0-21swapper/210:02:242
467599563,46cyclictest0-21swapper/209:28:142
4675995611,39cyclictest1419-21runrttasks08:56:472
4675995610,12cyclictest0-21swapper/206:47:112
467499568,34cyclictest0-21swapper/107:57:521
467499565,37cyclictest0-21swapper/107:20:571
4674995617,24cyclictest4024-21latency09:12:281
282322564,13sleep20-21swapper/205:28:322
282322564,13sleep20-21swapper/205:28:322
248599560,6rtkit-daemon0-21swapper/005:07:241
130972563,45sleep113100-21ssh07:51:511
467699555,14cyclictest0-21swapper/307:22:193
467599558,40cyclictest3553-21ssh08:23:372
467599555,44cyclictest0-21swapper/208:09:582
467599553,47cyclictest0-21swapper/209:52:342
4675995513,14cyclictest1419-21runrttasks09:07:312
4675995512,37cyclictest0-21swapper/210:02:032
467499557,26cyclictest0-21swapper/106:22:221
467499555,16cyclictest0-21swapper/108:12:511
467499554,33cyclictest0-21swapper/107:54:001
4674995512,26cyclictest28595-21latency_hist07:27:091
248599550,6rtkit-daemon2484-21rtkit-daemon06:07:293
128612553,45sleep11287-21snmpd06:05:551
467699549,38cyclictest25943-21runrttasks09:45:363
467699548,39cyclictest29626-21ssh08:15:353
467699545,41cyclictest1949-21ssh09:09:563
467699544,43cyclictest0-21swapper/307:21:503
467599546,42cyclictest0-21swapper/209:12:382
467599546,42cyclictest0-21swapper/207:10:572
467599544,44cyclictest0-21swapper/209:22:092
467599544,10cyclictest20296-21aten2.4-expect08:02:172
467599543,44cyclictest0-21swapper/209:42:152
467499545,15cyclictest0-21swapper/107:41:461
467499545,15cyclictest0-21swapper/107:41:461
4674995423,12cyclictest6826-21yum-updatesd-he08:28:181
4674995410,26cyclictest0-21swapper/104:52:261
467099544,35cyclictest0-21swapper/008:57:530
248599540,5rtkit-daemon2484-21rtkit-daemon09:27:293
177772543,44sleep10-21swapper/107:09:431
467699539,38cyclictest1419-21runrttasks07:53:223
467699534,42cyclictest216691ssh08:52:063
467699534,42cyclictest0-21swapper/307:10:143
4676995335,11cyclictest16467-21gltestperf06:12:303
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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