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2026-07-28 - 15:31

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack7slot7s.osadl.org (updated Tue Jul 28, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1312229971,9sleep00-21swapper/007:06:180
1312529480,10sleep30-21swapper/307:06:203
1330929178,9sleep20-21swapper/207:08:452
1317028966,6sleep10-21swapper/107:06:551
1350299331,2cyclictest2987-21dump-pmu-power10:45:011
1350299290,2cyclictest0-21swapper/111:58:481
1350299284,23cyclictest6084-21diskmemload10:20:561
1350299283,21cyclictest225-21systemd-journal08:25:001
1350299271,7cyclictest6084-21diskmemload11:26:591
1350299271,1cyclictest6084-21diskmemload11:45:261
1349999270,27cyclictest0-21swapper/012:05:430
1350299264,21cyclictest32373-21munin-run12:20:011
1350299260,2cyclictest0-21swapper/111:44:021
1350299260,25cyclictest0-21swapper/112:20:121
1350299260,25cyclictest0-21swapper/110:02:381
1350299260,25cyclictest0-21swapper/107:45:121
1350299260,1cyclictest0-21swapper/109:46:241
1349999260,24cyclictest0-21swapper/012:22:140
1350299251,23cyclictest14907-21ssh09:15:111
1350299250,24cyclictest0-21swapper/112:25:141
1350299250,24cyclictest0-21swapper/110:55:141
1350899241,22cyclictest0-21swapper/307:10:133
1350299243,19cyclictest6084-21diskmemload10:54:401
1350299241,1cyclictest6084-21diskmemload10:45:131
1350299240,2cyclictest6084-21diskmemload11:36:161
1350299240,1cyclictest0-21swapper/109:12:541
1350299235,8cyclictest0-21swapper/108:10:131
1350299235,17cyclictest6084-21diskmemload11:51:021
1350299232,20cyclictest17255-21needreboot09:35:221
1350299231,1cyclictest6084-21diskmemload09:28:191
1350299230,22cyclictest0-21swapper/112:35:151
1350299230,1cyclictest0-21swapper/112:33:191
1350299230,1cyclictest0-21swapper/112:11:421
1350299230,1cyclictest0-21swapper/109:33:251
1349999230,3cyclictest0-21swapper/011:18:500
1350299222,19cyclictest6084-21diskmemload10:17:551
1350299222,19cyclictest0-21swapper/109:55:231
1350299221,20cyclictest0-21swapper/108:50:141
1350299221,1cyclictest6084-21diskmemload11:06:441
1349999220,2cyclictest0-21swapper/011:49:190
1350599210,20cyclictest0-21swapper/210:18:022
1350299213,15cyclictest6084-21diskmemload10:39:371
1350299213,15cyclictest6084-21diskmemload10:39:361
13502992116,4cyclictest38150irq/131-snd_hda10:25:131
1350299211,17cyclictest2069-21kworker/1:111:30:211
1350299210,2cyclictest0-21swapper/109:43:021
1350299210,20cyclictest0-21swapper/109:52:151
1350299210,1cyclictest0-21swapper/112:05:051
1350299210,1cyclictest0-21swapper/111:24:561
13499992120,1cyclictest0-21swapper/012:33:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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