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2025-12-08 - 13:19

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 Mon Dec 08, 2025 00:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41402870,2sleep00-21swapper/020:45:300
2009998630,13cyclictest3298-21ssh00:30:250
143102860,1sleep10-21swapper/123:17:161
143102860,1sleep10-21swapper/123:17:161
2009998472,5cyclictest0-21swapper/022:46:340
2009998227,8cyclictest0-21swapper/022:10:270
60232770,1sleep10-21swapper/121:42:151
200999772,43cyclictest0-21swapper/000:05:270
2009997723,12cyclictest0-21swapper/019:25:270
2009997628,12cyclictest0-21swapper/023:00:270
176152760,5sleep2201199cyclictest23:21:122
138032760,1sleep30-21swapper/321:52:273
200999753,41cyclictest0-21swapper/023:30:280
29002740,5sleep00-21swapper/000:30:140
200999723,66cyclictest101ktimersoftd/021:20:160
2009997219,11cyclictest0-21swapper/020:10:290
2009997026,12cyclictest0-21swapper/023:15:260
2009997026,12cyclictest0-21swapper/023:15:260
80112690,2sleep37952-21ssh23:50:443
2009996926,23cyclictest0-21swapper/000:35:260
200999681,39cyclictest0-21swapper/019:40:270
2009996811,9cyclictest7950irq/56-dwc_otg_22:20:290
2010996714,23cyclictest0-21swapper/120:10:291
2009996719,30cyclictest22257-21fschecks_count20:05:330
2009996719,30cyclictest22257-21fschecks_count20:05:330
51792650,1sleep30-21swapper/300:32:153
285612650,2sleep128566-21acpi00:20:251
2010996512,46cyclictest0-21swapper/119:10:281
2009996511,31cyclictest0-21swapper/022:05:270
200999646,25cyclictest0-21swapper/020:00:280
2010996217,26cyclictest0-21swapper/123:00:271
200999623,33cyclictest0-21swapper/019:10:170
200999618,32cyclictest19934-21/usr/sbin/munin23:25:270
200999617,39cyclictest7245-21fschecks_time23:50:340
200999612,29cyclictest13149-21wc21:10:160
184922610,6sleep1201099cyclictest21:15:461
201199591,24cyclictest21708-21ssh00:10:262
2009995935,11cyclictest0-21swapper/023:47:480
200999592,9cyclictest29005-21http20:25:140
201099585,33cyclictest0-21swapper/122:20:281
2009995826,19cyclictest0-21swapper/019:35:370
2009995821,25cyclictest0-21swapper/019:50:140
200999572,34cyclictest30892-21apt20:30:150
200999572,23cyclictest22824-21sort22:05:150
200999571,42cyclictest4983-21unixbench_singl19:15:440
200999566,31cyclictest18560-21ssh22:40:380
200999561,30cyclictest22861-21ssh00:10:430
200999561,29cyclictest11043-21fschecks_count23:55:330
200999557,29cyclictest0-21swapper/021:20:210
200999555,6cyclictest0-21swapper/022:25:280
200999554,41cyclictest15288-21ssh22:35:480
200999552,35cyclictest0-21swapper/020:15:280
200999552,27cyclictest16960-21ssh21:15:150
200999551,31cyclictest26461-21unixbench_multi00:15:460
201099547,18cyclictest0-21swapper/121:10:201
201099546,27cyclictest0-21swapper/100:30:271
2010995422,20cyclictest0-21swapper/122:10:271
200999546,4cyclictest0-21swapper/022:50:290
200999545,30cyclictest25104-21grep21:25:300
179802540,6sleep117982-21latency_hist00:05:151
222112530,2sleep10-21swapper/122:45:361
201099534,17cyclictest0-21swapper/100:05:271
2009995327,10cyclictest101ktimersoftd/022:18:480
2009995315,34cyclictest101ktimersoftd/023:14:360
200999531,34cyclictest31667-21wget23:40:310
200999531,33cyclictest0-21swapper/021:45:460
2009995312,12cyclictest0-21swapper/022:55:280
2011995220,20cyclictest29-21rcuc/221:20:212
2010995217,18cyclictest0-21swapper/119:40:281
200999528,27cyclictest0-21swapper/020:55:370
200999527,21cyclictest18099-21ssh23:22:130
2009995223,14cyclictest0-21swapper/019:55:420
200999522,25cyclictest0-21swapper/019:30:470
200999515,31cyclictest0-21swapper/021:54:080
200999513,38cyclictest9-21ksoftirqd/021:56:280
200999511,37cyclictest0-21swapper/000:21:280
200999511,31cyclictest0-21swapper/020:30:430
201099507,26cyclictest0-21swapper/122:50:291
200999505,42cyclictest101ktimersoftd/022:33:020
2009995030,10cyclictest0-21swapper/021:34:190
2009995029,10cyclictest0-21swapper/021:42:390
2009995024,5cyclictest0-21swapper/023:35:280
2011994929,11cyclictest28620-21ssh22:54:292
201099492,14cyclictest0-21swapper/123:35:281
200999498,38cyclictest101ktimersoftd/023:08:480
2009994933,8cyclictest0-21swapper/000:02:120
200999491,40cyclictest0-21swapper/019:50:340
2010994812,26cyclictest0-21swapper/100:35:271
17042483,12sleep00-21swapper/019:09:510
201199477,25cyclictest0-21swapper/219:55:302
201199477,25cyclictest0-21swapper/219:40:202
201099478,9cyclictest7750irq/56-dwc_otg22:05:281
201099473,5cyclictest19341-21ssh22:00:291
2009994722,12cyclictest0-21swapper/021:37:000
188662470,3sleep337-21rcuc/321:16:323
201099467,24cyclictest0-21swapper/120:25:201
201099467,14cyclictest12899-21diskmemload23:30:281
201099464,6cyclictest0-21swapper/120:15:281
200999468,21cyclictest0-21swapper/021:00:150
2009994630,4cyclictest101ktimersoftd/019:20:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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