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2026-09-04 - 02:00

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 Fri Sep 04, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
363721460,4sleep334-21rcuc/322:12:583
2769221320,6sleep227693-21cat22:48:122
4701991024,23cyclictest28197-21ssh21:12:550
4701991023,81cyclictest0-21swapper/022:22:030
4701991019,68cyclictest0-21swapper/020:22:590
4701991014,23cyclictest17120-21ssh22:33:020
470199983,27cyclictest0-21swapper/019:56:180
470199974,26cyclictest0-21swapper/020:51:490
470199974,24cyclictest0-21swapper/023:02:500
470199964,26cyclictest0-21swapper/022:26:390
470199964,25cyclictest0-21swapper/021:42:080
470199955,28cyclictest0-21swapper/019:58:090
470199954,29cyclictest0-21swapper/020:43:050
470199954,29cyclictest0-21swapper/020:43:050
470199954,25cyclictest0-21swapper/022:04:080
470199954,25cyclictest0-21swapper/022:04:080
4701999518,12cyclictest0-21swapper/021:46:280
219499950,4rtkit-daemon2193-21rtkit-daemon21:11:181
470199944,83cyclictest0-21swapper/020:55:180
470199944,82cyclictest0-21swapper/021:23:090
4701999418,12cyclictest0-21swapper/022:02:030
470199934,81cyclictest0-21swapper/022:53:140
470199934,26cyclictest0-21swapper/021:05:140
470199934,26cyclictest0-21swapper/019:48:570
470199934,26cyclictest0-21swapper/018:17:520
470199934,25cyclictest0-21swapper/022:32:000
470199925,25cyclictest0-21swapper/020:40:550
470199925,25cyclictest0-21swapper/020:03:030
470199925,25cyclictest0-21swapper/020:03:030
470199924,79cyclictest0-21swapper/019:22:020
470199924,26cyclictest0-21swapper/021:56:460
470199924,25cyclictest0-21swapper/021:02:270
470199923,24cyclictest19343-21ssh21:47:580
4701999219,13cyclictest0-21swapper/023:01:090
470199915,26cyclictest0-21swapper/020:18:020
470199914,26cyclictest0-21swapper/020:33:070
470199914,25cyclictest0-21swapper/020:30:090
470199913,26cyclictest0-21swapper/022:47:530
4701999118,14cyclictest0-21swapper/022:45:480
4701999118,14cyclictest0-21swapper/022:45:480
470199905,26cyclictest0-21swapper/022:16:290
470199904,26cyclictest0-21swapper/022:39:080
470199904,25cyclictest0-21swapper/022:10:270
470199904,25cyclictest0-21swapper/021:22:210
4701999027,9cyclictest21775-21fschecks_time20:13:050
4701999019,10cyclictest1227-21runrttasks20:11:060
4701999017,12cyclictest0-21swapper/021:11:360
470199895,24cyclictest0-21swapper/019:43:120
470199894,77cyclictest0-21swapper/021:32:570
470199884,26cyclictest0-21swapper/021:29:200
470199884,26cyclictest0-21swapper/019:03:100
470199865,72cyclictest0-21swapper/018:38:200
470199864,73cyclictest0-21swapper/018:33:030
4701998623,54cyclictest0-21swapper/018:08:240
470199854,73cyclictest0-21swapper/019:41:280
219499850,9rtkit-daemon0-21swapper/017:38:120
219499850,8rtkit-daemon0-21swapper/018:18:100
470199844,22cyclictest1227-21runrttasks19:32:520
219499840,9rtkit-daemon0-21swapper/018:53:010
470199829,9cyclictest7150irq/45-ahci18:27:500
470199824,69cyclictest0-21swapper/019:13:240
470199814,30cyclictest0-21swapper/017:48:100
4701998110,9cyclictest107550irq/46-eth019:23:160
4701998110,9cyclictest107550irq/46-eth019:23:160
219499810,7rtkit-daemon0-21swapper/018:29:400
470199799,11cyclictest0-21swapper/019:29:200
470199793,21cyclictest0-21swapper/017:54:210
470199793,20cyclictest0-21swapper/017:43:030
219499790,6rtkit-daemon0-21swapper/122:17:461
172072790,7chrt0-21swapper/122:33:031
470199784,25cyclictest0-21swapper/018:58:080
470199784,22cyclictest16808-21needreboot19:08:130
470199784,22cyclictest0-21swapper/017:59:220
470199784,13cyclictest0-21swapper/018:43:020
470199784,13cyclictest0-21swapper/018:43:020
470199783,12cyclictest18116-21ntpq18:03:170
470199783,12cyclictest18116-21ntpq18:03:170
219499780,7rtkit-daemon0-21swapper/119:38:221
219499770,7rtkit-daemon0-21swapper/119:58:061
219499760,8rtkit-daemon0-21swapper/118:20:101
219499760,6rtkit-daemon0-21swapper/123:04:061
219499760,6rtkit-daemon0-21swapper/122:40:521
219499760,6rtkit-daemon0-21swapper/018:48:240
219499750,8rtkit-daemon28306-21fschecks_time20:23:051
219499750,6rtkit-daemon0-21swapper/122:29:451
219499750,6rtkit-daemon0-21swapper/118:43:241
219499750,6rtkit-daemon0-21swapper/118:43:241
219499740,6rtkit-daemon0-21swapper/122:58:141
219499740,6rtkit-daemon0-21swapper/122:10:461
219499730,6rtkit-daemon0-21swapper/121:56:311
219499730,6rtkit-daemon0-21swapper/121:40:101
219499720,8rtkit-daemon0-21swapper/121:35:171
219499720,8rtkit-daemon0-21swapper/120:20:131
219499720,7rtkit-daemon0-21swapper/122:52:441
219499710,8rtkit-daemon0-21swapper/119:52:511
219499710,7rtkit-daemon0-21swapper/117:48:261
219499710,6rtkit-daemon0-21swapper/121:30:101
219499710,6rtkit-daemon0-21swapper/119:45:071
213412710,4sleep121480-21date21:02:461
219499700,8rtkit-daemon0-21swapper/122:43:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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