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2026-07-18 - 01:57

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 Sat Jul 18, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6582991053,13cyclictest0-21swapper/021:58:180
2194991050,8rtkit-daemon0-21swapper/220:31:482
2194991040,6rtkit-daemon22497-21yum-updatesd-he20:03:112
2194991030,5rtkit-daemon0-21swapper/219:53:122
2194991020,7rtkit-daemon0-21swapper/220:53:172
6587991004,44cyclictest0-21swapper/120:53:431
2194991000,7rtkit-daemon0-21swapper/220:18:112
2194991000,5rtkit-daemon1124-21snmpd18:29:382
219499990,6rtkit-daemon0-21swapper/218:43:292
219499990,4rtkit-daemon0-21swapper/220:33:102
219499980,4rtkit-daemon0-21swapper/219:22:582
6590999745,45cyclictest22541-21df_inode22:23:073
219499970,5rtkit-daemon0-21swapper/218:23:002
658799953,44cyclictest0-21swapper/121:45:201
658799946,34cyclictest0-21swapper/121:03:201
658799944,43cyclictest0-21swapper/121:02:101
658299943,84cyclictest0-21swapper/021:22:000
659099934,42cyclictest0-21swapper/320:53:273
658799935,41cyclictest0-21swapper/122:23:471
658799934,45cyclictest0-21swapper/123:03:041
658799934,37cyclictest8951-21crond18:27:591
658799934,37cyclictest8951-21crond18:27:591
658799933,43cyclictest0-21swapper/122:09:341
658299933,84cyclictest0-21swapper/022:38:130
658299933,13cyclictest0-21swapper/020:58:180
658799925,42cyclictest0-21swapper/123:51:481
658799924,41cyclictest14715-21munin-node22:13:021
658799923,49cyclictest0-21swapper/118:53:231
658299924,35cyclictest19034-21yum-updatesd-he23:03:080
6582999233,9cyclictest1227-21runrttasks21:28:110
658299923,82cyclictest0-21swapper/023:16:230
658299923,82cyclictest0-21swapper/023:16:230
6590999133,11cyclictest30051-21grep22:33:093
6590999133,11cyclictest30051-21grep22:33:093
658799915,38cyclictest0-21swapper/122:41:231
658799914,43cyclictest0-21swapper/123:09:581
658299914,13cyclictest0-21swapper/021:53:200
658299914,13cyclictest0-21swapper/021:53:200
658299913,82cyclictest0-21swapper/022:33:520
658299913,82cyclictest0-21swapper/022:33:520
6590999032,8cyclictest5499-21hwlatdetect23:28:093
659099903,44cyclictest8873-21cut19:33:173
6590999020,14cyclictest0-21swapper/321:23:103
658799904,45cyclictest0-21swapper/121:28:061
658799904,39cyclictest0-21swapper/120:42:451
658799903,48cyclictest0-21swapper/120:48:071
6582999032,11cyclictest22811-21uname21:38:180
658299902,39cyclictest31608-21diskmemload22:13:470
6590998920,8cyclictest27003-21rm22:28:183
658299894,79cyclictest0-21swapper/023:41:330
658299893,37cyclictest0-21swapper/022:53:030
219499890,11rtkit-daemon0-21swapper/220:18:183
658799885,38cyclictest0-21swapper/122:43:241
658799884,40cyclictest0-21swapper/122:03:251
658799884,39cyclictest0-21swapper/120:32:211
658799883,46cyclictest0-21swapper/121:14:551
658799883,46cyclictest0-21swapper/121:14:551
658299883,79cyclictest0-21swapper/021:16:270
658299883,79cyclictest0-21swapper/021:16:270
658299883,78cyclictest0-21swapper/023:29:480
658299883,12cyclictest0-21swapper/020:41:300
658299882,40cyclictest24311-21ssh23:08:440
219499880,4rtkit-daemon0-21swapper/218:23:233
219499880,4rtkit-daemon0-21swapper/218:23:233
6590998734,12cyclictest23656-21aten_r1power_vo18:58:113
6590998721,10cyclictest9673-21sendmail_mailtr23:33:183
658799875,40cyclictest0-21swapper/121:53:031
658799875,40cyclictest0-21swapper/121:53:031
658799874,39cyclictest9508-21ntp_states23:33:151
658799873,44cyclictest0-21swapper/122:28:031
658299873,35cyclictest0-21swapper/022:10:050
219499870,8rtkit-daemon0-21swapper/220:55:020
659099864,29cyclictest0-21swapper/321:17:453
659099864,29cyclictest0-21swapper/321:17:453
659099864,27cyclictest0-21swapper/323:38:593
6590998623,10cyclictest355-21munin-node22:38:113
6590998620,11cyclictest28640-21yum-updatesd-he21:03:153
658799863,38cyclictest7134-21munin-run22:02:511
658299868,11cyclictest0-21swapper/023:33:370
658299863,77cyclictest0-21swapper/022:19:090
658299863,76cyclictest0-21swapper/021:36:510
658299863,34cyclictest0-21swapper/022:58:000
658299862,40cyclictest31608-21diskmemload22:32:290
659099854,23cyclictest0-21swapper/321:37:503
6587998534,9cyclictest22898-21ssh21:38:201
658799853,46cyclictest0-21swapper/121:23:401
658299853,13cyclictest0-21swapper/020:43:250
219499850,8rtkit-daemon0-21swapper/218:48:143
659099843,39cyclictest1550-21nscd23:16:213
659099843,39cyclictest1550-21nscd23:16:213
6590998421,13cyclictest0-21swapper/320:42:353
658799843,45cyclictest0-21swapper/122:58:141
658299844,36cyclictest0-21swapper/020:31:080
658299843,38cyclictest0-21swapper/020:23:170
6582998424,12cyclictest0-21swapper/020:48:160
6582998415,27cyclictest12184-21python21:23:240
219499840,8rtkit-daemon0-21swapper/219:58:123
659099834,12cyclictest0-21swapper/321:45:493
6590998333,10cyclictest22865-21grep18:53:313
6590998321,8cyclictest31608-21diskmemload22:03:063
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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