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2026-06-27 - 11:53

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 Jun 27, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2194991010,5rtkit-daemon2193-21rtkit-daemon20:45:403
19082991014,35cyclictest1953-21ssh21:13:110
19082999819,72cyclictest0-21swapper/019:28:130
1908299975,29cyclictest15002-21rm22:22:030
1908299975,28cyclictest27644-21ssh21:52:500
19082999722,10cyclictest17235-21ssh20:48:140
1908299955,28cyclictest0-21swapper/021:32:570
1908299954,12cyclictest32024-21timerandwakeup23:33:050
19082999520,13cyclictest12221-21diskstats23:52:480
1908299948,27cyclictest0-21swapper/022:48:010
1908299945,81cyclictest0-21swapper/000:02:530
1908299945,81cyclictest0-21swapper/000:02:530
1908299944,22cyclictest21637-21ssh21:42:580
19082999437,50cyclictest29272-21grep22:42:480
19082999437,50cyclictest29272-21grep22:42:480
1908299943,24cyclictest21161-21grep23:17:520
1908299943,24cyclictest21161-21grep23:17:520
1908299943,22cyclictest24100-21munin-node21:47:560
19082999413,13cyclictest4746-21gltestperf21:17:580
19082999413,13cyclictest4746-21gltestperf21:17:580
19082999411,20cyclictest14579-21ssh23:07:560
26742930,6sleep32675-21munin-node19:13:123
26742930,6sleep32675-21munin-node19:13:123
1908299935,21cyclictest0-21swapper/022:53:050
1908299934,30cyclictest0-21swapper/018:47:570
1908299934,25cyclictest6713-21ssh23:43:060
1908299934,23cyclictest0-21swapper/022:33:290
1908499923,81cyclictest0-21swapper/121:38:231
1908299925,25cyclictest0-21swapper/023:05:420
1908299924,33cyclictest0-21swapper/022:38:010
1908299924,28cyclictest0-21swapper/020:43:060
1908299924,24cyclictest27278-21ssh21:03:070
1908299923,26cyclictest0-21swapper/021:08:130
1908299923,12cyclictest8599-21unixbench_singl22:58:090
19082999219,13cyclictest0-21swapper/021:38:000
19082999215,10cyclictest107550irq/46-eth022:12:530
1908299915,12cyclictest1124-21snmpd22:31:510
1908299914,35cyclictest0-21swapper/019:17:430
1908299914,35cyclictest0-21swapper/019:17:430
1908299914,34cyclictest0-21swapper/020:18:090
1908299914,24cyclictest0-21swapper/021:57:520
1908299914,22cyclictest0-21swapper/023:16:480
19082999126,9cyclictest24491-21gltestperf23:22:520
19082999121,14cyclictest0-21swapper/022:07:370
19082999121,14cyclictest0-21swapper/022:07:370
19082999110,21cyclictest19493-1kworker/0:2H21:26:040
1908499903,79cyclictest0-21swapper/123:49:521
1908299905,28cyclictest0-21swapper/023:57:510
1908299905,28cyclictest0-21swapper/023:57:510
1908299904,29cyclictest0-21swapper/020:58:090
1908299904,24cyclictest0-21swapper/023:50:250
1908299904,12cyclictest20340-21processes20:53:080
1908299903,36cyclictest1689-21grep23:37:480
19082999020,11cyclictest0-21swapper/022:25:100
1908499894,78cyclictest0-21swapper/122:41:561
1908499894,78cyclictest0-21swapper/118:57:591
1908499893,78cyclictest0-21swapper/121:21:111
1908499893,78cyclictest0-21swapper/121:21:111
1908299895,27cyclictest0-21swapper/019:53:110
1908299895,24cyclictest0-21swapper/022:12:130
1908299895,13cyclictest0-21swapper/020:27:510
1908299894,15cyclictest1124-21snmpd19:58:030
1908299894,15cyclictest1124-21snmpd19:58:030
19082998918,10cyclictest0-21swapper/000:11:380
19082998917,12cyclictest0-21swapper/020:03:040
19082998915,12cyclictest0-21swapper/021:28:000
19082998911,24cyclictest30808-1kworker/0:2H19:12:430
1908499884,77cyclictest0-21swapper/121:27:591
1908499884,52cyclictest1788-21yum22:48:101
1908499883,78cyclictest0-21swapper/123:27:561
19082998816,12cyclictest0-21swapper/023:29:240
1908499874,76cyclictest0-21swapper/121:26:161
1908499874,76cyclictest0-21swapper/121:08:151
1908499874,60cyclictest0-21swapper/121:42:581
1908499873,77cyclictest0-21swapper/123:00:321
1908299875,15cyclictest0-21swapper/018:58:020
19082998732,10cyclictest18406-21grep19:47:560
1908499864,74cyclictest0-21swapper/122:54:321
1908499863,76cyclictest0-21swapper/120:53:471
1908299864,33cyclictest0-21swapper/019:20:230
19082998627,13cyclictest0-21swapper/019:33:130
1908499854,9cyclictest15715-21grep23:57:521
1908499854,9cyclictest15715-21grep23:57:521
1908499854,74cyclictest0-21swapper/123:54:141
1908499854,74cyclictest0-21swapper/123:12:211
1908499853,75cyclictest0-21swapper/123:44:441
1908499853,75cyclictest0-21swapper/123:38:581
1908499853,75cyclictest0-21swapper/120:42:541
1908499853,71cyclictest0-21swapper/122:17:361
1908499853,51cyclictest0-21swapper/120:22:411
1908299854,25cyclictest0-21swapper/018:44:250
1908299854,12cyclictest0-21swapper/018:53:000
19082998524,10cyclictest7284-21sort19:23:060
1908499843,74cyclictest0-21swapper/121:13:461
1908499843,74cyclictest0-21swapper/119:32:441
1908299844,29cyclictest0-21swapper/019:43:030
1908499834,9cyclictest24054-21munin-node22:33:101
1908499834,72cyclictest0-21swapper/123:22:471
1908499834,72cyclictest0-21swapper/121:49:181
1908499834,52cyclictest0-21swapper/122:28:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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