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2026-05-29 - 22:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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.

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 rack7slot3s.osadl.org (updated Fri May 29, 2026 12:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29502998615,26cyclictest0-21swapper/009:50:180
2950299857,35cyclictest29573-21ssh11:40:180
241962810,2sleep20-21swapper/210:55:372
42462790,5sleep12950399cyclictest11:09:571
150392750,5sleep22950499cyclictest10:07:582
29502997424,10cyclictest0-21swapper/011:50:180
29502997424,10cyclictest0-21swapper/011:50:180
29502997215,32cyclictest9-21ksoftirqd/011:30:180
197282700,1sleep20-21swapper/208:35:352
110402680,5sleep32950599cyclictest09:25:233
2950499674,11cyclictest0-21swapper/209:55:172
2950299677,52cyclictest0-21swapper/012:15:180
2950299671,37cyclictest6468-21aten_rbpower_po09:20:190
29504996523,26cyclictest6510-21/usr/sbin/munin10:35:302
29503996410,4cyclictest0-21swapper/111:02:471
2950299642,30cyclictest25264-21ssh10:20:170
2950499638,13cyclictest7850irq/56-dwc_otg12:00:172
2950299637,43cyclictest0-21swapper/011:45:180
29502996217,6cyclictest0-21swapper/011:35:160
2950399618,4cyclictest0-21swapper/112:36:311
2950399617,5cyclictest27190-21/usr/sbin/munin09:00:261
2950299615,43cyclictest0-21swapper/010:45:050
2950399601,7cyclictest30407-21aten_rbpower_vo12:20:191
29503996010,6cyclictest31559-21sed09:10:361
29502996014,24cyclictest30266-21systemd-cgroups11:01:090
2950499595,29cyclictest0-21swapper/212:35:152
2950399597,17cyclictest0-21swapper/110:20:181
2950399596,5cyclictest7850irq/56-dwc_otg12:00:221
2950399591,4cyclictest7850irq/56-dwc_otg11:25:231
29502995937,5cyclictest8050irq/56-dwc_otg_12:25:270
2950299593,14cyclictest5653-21ssh10:35:170
29502995920,9cyclictest13-21rcuc/010:30:170
2950299591,31cyclictest0-21swapper/011:15:150
29504995818,24cyclictest6563-21cpuspeed09:20:192
29503995826,20cyclictest221ktimersoftd/111:55:181
29502995832,3cyclictest0-21swapper/012:20:330
2950299582,7cyclictest28096-21munin-run09:05:050
2950299582,35cyclictest28048-21sort09:45:260
29504995725,15cyclictest15374-21ssh11:22:332
29504995725,15cyclictest15374-21ssh11:22:332
29504995722,16cyclictest4682-21sh11:49:242
29504995721,14cyclictest2775-21chrt09:53:532
29504995720,12cyclictest11926-21sed09:25:352
2950399577,7cyclictest0-21swapper/112:19:361
2950399571,27cyclictest15241-21cut09:30:221
2950299574,24cyclictest141-21systemd-journal12:05:170
29502995730,17cyclictest24047-21unixbench-2d10:55:340
2950299572,7cyclictest1133-21runrttasks09:15:060
2950299572,5cyclictest0-21swapper/009:30:180
2950299572,30cyclictest0-21swapper/010:15:310
2950299571,14cyclictest10105-21latency_hist12:35:060
29504995623,11cyclictest21908-21rm10:54:052
29504995623,11cyclictest21908-21rm10:54:052
29504995622,21cyclictest9468-21ssh11:55:092
29504995621,20cyclictest29632-21ssh12:19:322
2950499562,11cyclictest0-21swapper/211:25:172
29504995618,21cyclictest24064-21runrttasks11:33:162
2950399563,5cyclictest7850irq/56-dwc_otg10:10:281
2950299566,46cyclictest23464-21ssh09:40:190
29502995628,7cyclictest11661-21grep12:35:330
2950299561,28cyclictest9750-21cut08:00:220
29504995521,16cyclictest7850irq/56-dwc_otg12:05:382
29504995517,22cyclictest8050irq/56-dwc_otg_12:30:292
29503995514,9cyclictest2663-21ssh09:53:421
2950299558,25cyclictest0-21swapper/007:50:060
2950299551,28cyclictest19511-21fschecks_time09:35:230
29502995510,27cyclictest13449-21timerandwakeup10:05:330
2950499543,9cyclictest0-21swapper/210:20:162
29504995427,4cyclictest16703-21aten_rbpower_en10:10:202
29504995425,17cyclictest17792-21latency_hist08:30:062
29504995425,16cyclictest2181-21diskstats07:30:212
29504995420,18cyclictest9101-21ssh11:54:542
29504995420,18cyclictest9101-21ssh11:54:542
29504995420,18cyclictest25378-21/usr/sbin/munin11:35:222
2950299549,26cyclictest15276-21sh08:20:050
29502995430,5cyclictest8050irq/56-dwc_otg_09:25:160
29502995429,9cyclictest8050irq/56-dwc_otg_11:05:320
2950299541,44cyclictest0-21swapper/012:12:500
29502995410,25cyclictest0-21swapper/009:55:280
2950499537,22cyclictest7950irq/56-dwc_otg_12:20:172
29504995327,14cyclictest23520-21rm12:10:582
29504995324,11cyclictest21377-21ssh09:37:052
29504995321,11cyclictest550-21ssh11:44:272
29504995320,14cyclictest18425-21ssh09:34:232
29504995320,12cyclictest695-21ssh10:29:332
29504995320,10cyclictest27720-21/usr/sbin/munin09:45:222
29504995319,21cyclictest7950irq/56-dwc_otg_09:40:202
29504995319,21cyclictest7950irq/56-dwc_otg_08:05:212
29504995319,19cyclictest3727-21ssh10:32:212
29504995318,13cyclictest11256-21sed10:40:342
29503995314,5cyclictest1133-21runrttasks11:54:581
29503995314,5cyclictest1133-21runrttasks11:54:581
2950299537,33cyclictest0-21swapper/008:55:190
29502995330,5cyclictest0-21swapper/010:00:320
29502995327,5cyclictest22156-21grep08:45:290
2950299531,26cyclictest0-21swapper/007:20:180
2950299531,18cyclictest4769-21aten_rbpower_vo11:10:180
2950299523,27cyclictest0-21swapper/007:10:150
2950299523,24cyclictest0-21swapper/008:10:060
2950299521,30cyclictest17867-21grep10:10:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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