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2026-01-03 - 08:14

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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 100 highest latencies:
System rack5slot3s.osadl.org (updated Sat Jan 03, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
201772230163,55sleep10-21swapper/119:06:081
203792204135,56sleep20-21swapper/219:08:432
202732203166,25sleep30-21swapper/319:07:233
203282201164,25sleep00-21swapper/019:08:040
3006421270,5sleep12057499cyclictest20:40:231
20580998784,2cyclictest0-21swapper/219:10:162
322232670,4sleep081ktimersoftd/019:35:000
20580996359,3cyclictest0-21swapper/200:24:092
20580994542,2cyclictest0-21swapper/222:02:042
20569994510,4cyclictest21165-21kworker/0:300:01:460
2056999417,3cyclictest15110-21kworker/0:120:09:180
20569994016,11cyclictest87250irq/129-enp1s0-23:40:020
2056999398,3cyclictest2587-21kworker/0:221:14:500
2056999393,3cyclictest87050irq/127-enp1s0-20:46:500
20569993812,13cyclictest32526-21munin-run00:30:000
20569993812,13cyclictest32526-21munin-run00:30:000
2056999372,2cyclictest31073-21kworker/0:222:22:140
2056999368,13cyclictest17458-21awk20:15:020
20569993610,13cyclictest30639-21munin-run20:45:010
2056999335,13cyclictest8327-21basename23:35:010
2058699321,12cyclictest0-21swapper/320:38:203
2058699311,13cyclictest15067-21perl22:35:163
2058699311,10cyclictest0-21swapper/319:10:363
2056999312,10cyclictest3949-21kworker/0:019:43:450
2056999311,14cyclictest28444-21munin-run20:40:010
2056999311,12cyclictest0-21swapper/021:00:040
2056999310,24cyclictest0-21swapper/021:56:430
2058699301,12cyclictest0-21swapper/320:31:563
2056999302,17cyclictest19645-21munin-run20:20:020
2057499291,17cyclictest0-21swapper/123:10:321
2057499291,16cyclictest32246-21expr23:15:141
2057499291,16cyclictest32246-21expr23:15:141
2056999291,8cyclictest0-21swapper/019:18:020
2056999291,11cyclictest0-21swapper/020:58:380
2058699281,12cyclictest28243-21/usr/sbin/munin23:05:163
2058699281,12cyclictest0-21swapper/322:45:003
2058699281,12cyclictest0-21swapper/322:20:043
2058699281,12cyclictest0-21swapper/322:10:203
2058699281,11cyclictest0-21swapper/322:19:483
2058699281,11cyclictest0-21swapper/322:00:203
2058699280,10cyclictest0-21swapper/300:34:363
2057499289,4cyclictest8296-40dnf19:50:421
2056999286,8cyclictest16448-21kworker/0:322:46:540
2056999281,9cyclictest0-21swapper/019:49:540
191102280,3sleep00-21swapper/021:30:190
2058699271,12cyclictest0-21swapper/322:46:363
2058699271,11cyclictest0-21swapper/321:30:273
2058699271,10cyclictest0-21swapper/321:59:003
2058699270,11cyclictest0-21swapper/319:32:123
2057499272,11cyclictest27495-21munin-run23:05:001
2057499272,11cyclictest21115-21/usr/sbin/munin19:10:151
2056999278,3cyclictest0-21swapper/023:29:320
2056999271,11cyclictest0-21swapper/023:20:120
2056999271,11cyclictest0-21swapper/020:27:080
2056999270,12cyclictest31073-21kworker/0:222:18:000
2058699261,12cyclictest0-21swapper/323:45:153
2058699261,11cyclictest0-21swapper/320:27:083
2058699261,11cyclictest0-21swapper/300:22:283
2058699261,10cyclictest0-21swapper/321:29:233
2058699260,13cyclictest0-21swapper/319:25:243
20574992614,3cyclictest0-21swapper/121:35:411
2057499261,12cyclictest0-21swapper/119:21:521
2057499261,11cyclictest24664-21munin-run21:45:011
2057499260,2cyclictest0-21swapper/122:01:111
2056999268,8cyclictest31073-21kworker/0:222:13:440
2056999266,3cyclictest22072-21kworker/0:120:30:080
2056999261,12cyclictest0-21swapper/022:31:480
2056999261,12cyclictest0-21swapper/000:35:070
2056999261,11cyclictest0-21swapper/020:20:120
2056999261,11cyclictest0-21swapper/019:28:510
2056999261,10cyclictest0-21swapper/019:23:400
2056999260,12cyclictest0-21swapper/023:44:200
2058699251,11cyclictest0-21swapper/323:18:283
2058699251,11cyclictest0-21swapper/323:18:283
2058699251,11cyclictest0-21swapper/322:56:363
2058699251,11cyclictest0-21swapper/322:52:123
2058699251,11cyclictest0-21swapper/322:32:523
2058699251,10cyclictest0-21swapper/319:22:123
2058699250,11cyclictest0-21swapper/323:23:563
2057499251,8cyclictest6681-21df_inode23:30:141
2057499251,4cyclictest30330-21munin-run00:25:011
2057499251,2cyclictest0-21swapper/122:16:141
2056999258,3cyclictest3949-21kworker/0:019:54:020
2056999258,15cyclictest18697-21perf22:45:020
2056999257,3cyclictest2587-21kworker/0:221:28:020
2056999256,3cyclictest23378-21kworker/0:000:08:460
2056999256,3cyclictest22867-21kworker/0:221:42:070
2056999251,13cyclictest3302-21munin-run22:10:000
2056999251,13cyclictest3302-21munin-run22:10:000
2056999251,11cyclictest0-21swapper/021:06:280
2056999251,10cyclictest0-21swapper/023:58:280
2056999250,14cyclictest22711-21kworker/0:122:58:540
204582250,3sleep1221ktimersoftd/120:20:171
255142240,4sleep22058099cyclictest20:30:242
2058699241,16cyclictest0-21swapper/319:40:203
2058699241,13cyclictest0-21swapper/300:28:303
2058699241,13cyclictest0-21swapper/300:28:303
2058699241,12cyclictest0-21swapper/323:11:163
2058699241,11cyclictest0-21swapper/321:39:553
2058699241,10cyclictest0-21swapper/321:21:553
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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