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2025-12-14 - 05:08

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 Sun Dec 14, 2025 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2485991090,8rtkit-daemon0-21swapper/222:59:252
2485991080,8rtkit-daemon0-21swapper/221:19:292
2485991070,8rtkit-daemon0-21swapper/221:44:282
2485991070,7rtkit-daemon0-21swapper/223:49:302
2485991050,6rtkit-daemon0-21swapper/221:39:352
2485991050,3rtkit-daemon0-21swapper/200:24:142
2485991040,7rtkit-daemon0-21swapper/220:14:392
2485991040,7rtkit-daemon0-21swapper/220:14:392
2485991010,6rtkit-daemon22500-21timerandwakeup20:24:382
2485991010,5rtkit-daemon0-21swapper/219:38:182
2485991000,6rtkit-daemon0-21swapper/221:34:282
2485991000,5rtkit-daemon0-21swapper/221:09:292
248599980,5rtkit-daemon18676-21awk19:09:342
248599980,5rtkit-daemon12-21rcu_preempt00:34:212
248599980,5rtkit-daemon0-21swapper/219:49:022
248599970,6rtkit-daemon0-21swapper/220:44:372
248599970,5rtkit-daemon0-21swapper/223:57:222
248599970,5rtkit-daemon0-21swapper/222:54:322
248599970,5rtkit-daemon0-21swapper/220:34:302
248599970,5rtkit-daemon0-21swapper/200:14:222
248599960,6rtkit-daemon0-21swapper/200:29:292
248599960,6rtkit-daemon0-21swapper/200:29:292
1719799954,71cyclictest0-21swapper/022:24:250
248599930,4rtkit-daemon0-21swapper/219:19:262
1719799934,70cyclictest0-21swapper/021:14:370
1719799934,65cyclictest0-21swapper/000:19:120
17205999240,45cyclictest28687-21cut22:54:203
1720599923,44cyclictest2453-21tail00:14:193
248599910,8rtkit-daemon0-21swapper/223:44:232
248599910,8rtkit-daemon0-21swapper/223:44:232
1719799914,70cyclictest0-21swapper/021:59:320
1720599904,15cyclictest0-21swapper/319:29:213
17205999029,10cyclictest5809-21unixbench_singl00:19:323
1719799905,13cyclictest0-21swapper/019:35:390
17205998935,47cyclictest9744-21cut19:59:273
1720599893,26cyclictest25212-21head23:54:203
17205998926,55cyclictest15842-21munin-plugin-st22:29:063
17205998825,11cyclictest9713-21gltestperf22:14:233
17197998820,45cyclictest0-21swapper/022:49:180
1720599874,34cyclictest0-21swapper/319:39:213
1720599864,11cyclictest0-21swapper/300:04:263
17205998629,10cyclictest16139-21needreboot21:19:313
248599850,27rtkit-daemon29639-21timerandwakeup20:39:382
1720599854,28cyclictest0-21swapper/323:24:303
1720599853,11cyclictest0-21swapper/320:54:243
17205998528,9cyclictest5080-21gltestperf19:49:303
1719799853,65cyclictest0-21swapper/000:24:110
17205998427,10cyclictest28962-21gltestperf20:39:263
1719799844,74cyclictest0-21swapper/000:34:180
1720599834,27cyclictest0-21swapper/321:09:193
1720599834,25cyclictest0-21swapper/322:29:163
17205998327,11cyclictest26823-21needreboot22:49:263
1719799834,64cyclictest0-21swapper/020:59:310
1719799834,60cyclictest0-21swapper/020:49:400
1719799833,24cyclictest23101-21latency_hist20:29:120
17197998329,48cyclictest0-21swapper/022:36:500
17197998319,43cyclictest0-21swapper/023:50:430
1720599824,28cyclictest0-21swapper/323:34:143
17205998230,9cyclictest7231-21fschecks_time22:09:213
1720599823,30cyclictest0-21swapper/323:29:123
1719799824,71cyclictest0-21swapper/022:39:220
1719799824,70cyclictest0-21swapper/022:49:050
17197998220,55cyclictest29033-21idleruntime-cro21:49:080
1720599813,29cyclictest0-21swapper/323:39:323
1719799815,11cyclictest1419-21runrttasks23:04:240
1719799815,11cyclictest1419-21runrttasks23:04:240
1719799814,70cyclictest0-21swapper/023:34:220
1719799814,70cyclictest0-21swapper/021:56:510
1719799814,70cyclictest0-21swapper/019:49:410
1719799814,69cyclictest1419-21runrttasks20:23:030
1719799814,21cyclictest0-21swapper/021:40:180
1719799813,70cyclictest12502-21grep22:19:290
1719799813,70cyclictest12502-21grep22:19:290
1719799813,70cyclictest0-21swapper/022:09:350
17197998124,49cyclictest9756-21gltestperf22:14:240
17197998121,54cyclictest0-21swapper/023:20:020
1720599803,28cyclictest0-21swapper/321:59:283
1720599803,12cyclictest0-21swapper/320:29:443
1719799803,70cyclictest0-21swapper/019:29:300
1719799803,25cyclictest1419-21runrttasks19:11:250
17197998024,49cyclictest0-21swapper/020:04:320
17197998013,61cyclictest25152-21entropy19:24:270
1719799794,67cyclictest0-21swapper/021:24:300
1719799794,12cyclictest0-21swapper/019:19:390
1719799793,13cyclictest0-21swapper/019:43:280
17197997929,43cyclictest0-21swapper/023:54:340
17197997923,38cyclictest12209-21latency_hist23:29:040
17205997831,10cyclictest4963-21gltestperf22:04:253
17205997827,9cyclictest22252-21sort23:49:123
1719799784,68cyclictest0-21swapper/020:39:400
1719799784,67cyclictest0-21swapper/023:59:150
1719799784,66cyclictest0-21swapper/022:29:300
1719799784,66cyclictest0-21swapper/019:59:220
1719799784,12cyclictest0-21swapper/021:29:230
1719799783,22cyclictest20126-21tr19:14:320
1719799783,21cyclictest1419-21runrttasks23:00:010
17197997821,51cyclictest0-21swapper/021:49:310
1720599774,27cyclictest0-21swapper/319:34:573
1719799774,66cyclictest0-21swapper/020:29:440
1719799774,66cyclictest0-21swapper/000:04:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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