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2026-08-02 - 17:24

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 Sun Aug 02, 2026 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30840210161,35sleep00-21swapper/007:07:230
3091528560,9sleep30-21swapper/307:08:233
3094328370,9sleep20-21swapper/207:08:422
3082628063,13sleep10-21swapper/107:07:121
3112999260,25cyclictest0-21swapper/010:24:390
3113999250,25cyclictest0-21swapper/312:25:173
3113699250,24cyclictest0-21swapper/210:27:372
3112999252,22cyclictest0-21swapper/011:47:380
31129992423,1cyclictest0-21swapper/011:09:140
3112999240,23cyclictest0-21swapper/011:00:510
3113499225,16cyclictest29201-21ssh10:10:191
31134992220,1cyclictest12056-21aten2_r7power_c08:45:121
31139992118,2cyclictest39-21ksoftirqd/311:40:003
31139992118,2cyclictest39-21ksoftirqd/311:40:003
3113499210,20cyclictest23717-21diskmemload09:27:151
31129992120,1cyclictest0-21swapper/010:56:270
31134992018,1cyclictest17719-21awk12:00:001
3113499200,13cyclictest0-21swapper/110:35:181
3112999202,13cyclictest0-21swapper/007:30:130
220012200,0sleep30-21swapper/310:05:453
220012200,0sleep30-21swapper/310:05:453
31139991915,1cyclictest39-21ksoftirqd/309:21:023
31136991916,1cyclictest0-21swapper/209:40:432
3113699191,5cyclictest0-21swapper/208:40:132
3113499192,14cyclictest28350-21kworker/1:111:10:141
3113499191,18cyclictest0-21swapper/111:09:001
3113499190,19cyclictest0-21swapper/111:23:591
31129991917,1cyclictest0-21swapper/012:03:470
15692190,0sleep00-21swapper/011:30:210
31139991812,1cyclictest39-21ksoftirqd/312:34:563
3113699180,18cyclictest0-21swapper/211:09:002
3113499181,16cyclictest8790-21ssh09:39:351
3112999185,6cyclictest25064-21idleruntime-cro09:30:000
31129991816,1cyclictest0-21swapper/010:50:210
31139991711,5cyclictest11168-21apache_processe10:00:133
31136991715,2cyclictest32-21ksoftirqd/212:17:562
3113699170,15cyclictest0-21swapper/210:03:252
3113499170,2cyclictest0-21swapper/109:24:231
3113499170,17cyclictest0-21swapper/110:54:401
3113499170,15cyclictest0-21swapper/111:33:301
3112999170,0cyclictest0-21swapper/009:12:290
3113999163,2cyclictest141rcu_preempt11:01:353
31139991614,1cyclictest39-21ksoftirqd/309:44:353
31139991613,2cyclictest39-21ksoftirqd/309:50:243
31139991613,2cyclictest0-21swapper/310:50:213
31139991611,2cyclictest39-21ksoftirqd/312:05:033
3113999160,1cyclictest0-21swapper/311:46:383
3113999160,0cyclictest141rcu_preempt10:16:593
3113699160,2cyclictest0-21swapper/210:44:002
3113699160,16cyclictest0-21swapper/211:33:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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