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2026-09-05 - 06:08

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 Sat Sep 05, 2026 00:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2426526300,6sleep10-21swapper/119:05:331
257499910615,69cyclictest25959-21timerwakeupswit00:10:450
257499910216,62cyclictest7950irq/56-dwc_otg_00:30:430
257499910119,75cyclictest0-21swapper/019:30:280
257539910040,36cyclictest25907-21ls00:10:443
126312930,2sleep20-21swapper/220:00:432
25753998842,29cyclictest7950irq/56-dwc_otg_00:30:413
2575299882,55cyclictest7950irq/56-dwc_otg_00:30:422
25749998764,5cyclictest0-21swapper/023:11:310
2574999873,56cyclictest0-21swapper/023:50:260
2574999856,65cyclictest0-21swapper/020:05:280
177282840,5sleep12575199cyclictest22:43:011
2575299832,72cyclictest25977-21date00:10:452
2574999836,61cyclictest0-21swapper/023:55:290
166142830,5sleep12575199cyclictest23:20:371
2575199823,59cyclictest9982-21ls00:30:431
2574999826,46cyclictest0-21swapper/023:35:270
2574999821,36cyclictest0-21swapper/022:45:280
25751997818,36cyclictest7750irq/56-dwc_otg00:10:441
17842780,2sleep11786-21rm23:41:351
2575399767,18cyclictest7950irq/56-dwc_otg_21:15:283
2575199726,18cyclictest0-21swapper/119:50:261
2575199714,16cyclictest7750irq/56-dwc_otg22:20:281
2575299698,13cyclictest7850irq/56-dwc_otg_21:05:272
25749996945,16cyclictest28908-21grep20:45:440
25753996826,4cyclictest21658-21apt-get21:30:273
25749996821,26cyclictest19006-21fschecks_time20:20:320
25749996821,26cyclictest19006-21fschecks_time20:20:320
2575299672,46cyclictest7850irq/56-dwc_otg_00:05:402
2575299671,51cyclictest20840-21ssh23:25:412
2575299671,50cyclictest0-21swapper/223:55:162
2575299671,50cyclictest0-21swapper/223:46:242
2575299671,50cyclictest0-21swapper/223:46:242
25749996748,13cyclictest0-21swapper/020:35:290
2575299661,48cyclictest4208-21diskmemload00:20:542
2575199664,12cyclictest7750irq/56-dwc_otg20:00:261
2575199653,12cyclictest7750irq/56-dwc_otg23:55:261
2574999652,27cyclictest0-21swapper/023:20:270
25749996518,20cyclictest0-21swapper/020:45:150
135782650,2sleep00-21swapper/022:37:570
2575299643,47cyclictest9690-21aten_rbpower_cu19:55:292
25749996420,14cyclictest3697-21chrt22:25:410
25749996420,14cyclictest3697-21chrt22:25:410
25749996412,36cyclictest101ktimersoftd/019:55:150
243252640,3sleep224320-21ssh22:50:392
79272630,2sleep30-21swapper/323:10:333
2575299632,53cyclictest1172-21date19:30:362
2575299632,38cyclictest7850irq/56-dwc_otg_23:40:162
2575299631,50cyclictest13909-21ssh23:17:162
2575299631,50cyclictest13909-21ssh23:17:162
25749996338,10cyclictest26777-21proc_pri21:35:400
2575299621,50cyclictest18109-21ssh22:43:432
25751996218,3cyclictest7750irq/56-dwc_otg23:00:261
25749996234,12cyclictest101ktimersoftd/021:55:160
25749996224,18cyclictest0-21swapper/019:35:410
25753996125,13cyclictest11156-21/usr/sbin/munin21:55:383
25753996125,13cyclictest11156-21/usr/sbin/munin21:55:383
2575299611,52cyclictest25169-21ssh22:12:382
2575299611,46cyclictest4018-21ssh21:46:582
2575299611,40cyclictest5906-21ssh21:10:472
25751996115,10cyclictest7950irq/56-dwc_otg_23:25:291
2574999611,22cyclictest13372-21ls00:35:330
2575299604,42cyclictest7950irq/56-dwc_otg_21:55:262
2575299604,42cyclictest7950irq/56-dwc_otg_21:55:262
2575299602,42cyclictest0-21swapper/223:59:592
2575299601,48cyclictest0-21swapper/221:39:592
2575299601,44cyclictest32204-21ssh22:20:442
2575299601,44cyclictest0-21swapper/221:30:262
2575299601,43cyclictest10708-21modprobe22:35:152
2575299601,3cyclictest7950irq/56-dwc_otg_22:15:232
2574999602,36cyclictest4129-21apt-get23:45:260
2574999602,36cyclictest4129-21apt-get23:45:260
25753995926,22cyclictest2050-21ssh23:03:263
2575399591,22cyclictest0-21swapper/319:50:283
2575299592,40cyclictest0-21swapper/221:52:332
2575299591,46cyclictest4655-21sh00:25:222
25749995936,10cyclictest101ktimersoftd/022:20:420
25749995933,5cyclictest20345-21modprobe00:05:160
25749995918,26cyclictest1180-21runrttasks20:00:310
2574999591,54cyclictest101ktimersoftd/023:25:350
25753995824,11cyclictest15285-21basename22:40:293
25753995821,14cyclictest21701-21users20:25:443
25753995820,11cyclictest5842-21grep21:10:443
25753995819,22cyclictest14978-21ssh21:21:383
2575299582,45cyclictest0-21swapper/200:17:402
2575299582,41cyclictest0-21swapper/219:45:262
2575299581,5cyclictest20462-21ssh22:06:362
2575299581,4cyclictest19765-21ssh21:27:342
2575299581,45cyclictest0-21swapper/222:57:242
2575299581,45cyclictest0-21swapper/222:57:242
2575299581,44cyclictest0-21swapper/223:40:222
2575299581,38cyclictest28765-21sort20:45:432
2574999585,16cyclictest101ktimersoftd/021:10:330
25749995837,11cyclictest101ktimersoftd/022:34:440
2574999580,43cyclictest9683-21apt-get19:55:260
25753995726,12cyclictest7850irq/56-dwc_otg_22:20:433
2575299573,41cyclictest7950irq/56-dwc_otg_20:20:162
2575299572,40cyclictest0-21swapper/223:14:422
2575299571,4cyclictest25826-21ssh23:31:202
2575299571,45cyclictest0-21swapper/200:05:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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