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2026-06-30 - 14:45

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 50 highest latencies:
System rack1slot6s.osadl.org (updated Tue Jun 30, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2194991010,5rtkit-daemon2193-21rtkit-daemon10:59:082
219499950,5rtkit-daemon2193-21rtkit-daemon10:01:182
219499900,6rtkit-daemon0-21swapper/209:12:203
277112870,6sleep227712-21tune2fs08:09:422
16057998521,56cyclictest16378-21ssh11:59:393
16057998521,56cyclictest16378-21ssh11:59:393
202002840,4sleep03-21ksoftirqd/011:18:520
202002840,4sleep03-21ksoftirqd/011:18:520
16057998224,37cyclictest278951ssh11:29:303
16057998129,44cyclictest29368-21aten_r1power_po10:44:293
16057998125,47cyclictest10644-21crond09:29:213
16057998031,41cyclictest32563-21unixbench_singl11:34:493
16057998029,43cyclictest16243-21tr07:44:503
16057998022,50cyclictest14699-21ls09:34:343
219499790,5rtkit-daemon2193-21rtkit-daemon10:51:161
219499790,4rtkit-daemon2193-21rtkit-daemon10:58:161
219499790,4rtkit-daemon2193-21rtkit-daemon10:38:171
219499790,4rtkit-daemon2193-21rtkit-daemon10:38:171
219499790,4rtkit-daemon2193-21rtkit-daemon09:58:561
219499790,4rtkit-daemon2193-21rtkit-daemon09:58:561
16057997926,30cyclictest18713-21munin-node09:39:423
16057997921,51cyclictest3856-21threads10:04:503
219499780,4rtkit-daemon2193-21rtkit-daemon09:33:191
219499770,4rtkit-daemon2193-21rtkit-daemon11:43:361
16057997730,28cyclictest25426-21grep08:04:433
16057997628,26cyclictest18928-21timerwakeupswit11:14:513
16057997628,26cyclictest18928-21timerwakeupswit11:14:513
16057997626,33cyclictest0-21swapper/311:24:303
219499750,7rtkit-daemon0-21swapper/210:23:400
16057997524,31cyclictest0-21swapper/309:57:323
16057997524,31cyclictest0-21swapper/309:57:323
16057997523,31cyclictest0-21swapper/312:04:333
16057997519,36cyclictest0-21swapper/311:54:263
16057997519,36cyclictest0-21swapper/311:54:263
219499740,5rtkit-daemon2193-21rtkit-daemon11:14:081
16057997425,42cyclictest29464-21munin-node07:04:533
16057997424,43cyclictest0-21swapper/309:44:273
16057997422,44cyclictest0-21swapper/310:13:393
16057997421,45cyclictest0-21swapper/311:01:423
16057997421,32cyclictest0-21swapper/311:09:313
16057997333,33cyclictest13499-21tail07:39:423
16057997329,25cyclictest22841-21cut07:59:413
16057997327,30cyclictest6671-21ssh09:22:073
16057997326,29cyclictest21866-21netstat11:19:423
16057997326,29cyclictest21866-21netstat11:19:423
16057997325,28cyclictest31347-21wc09:59:323
16057997325,25cyclictest20990-21ssh08:54:553
16057997321,44cyclictest0-21swapper/310:40:443
16057997234,11cyclictest16309-21df_abs08:49:373
16057997227,26cyclictest11187-21rm09:29:333
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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