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2026-03-29 - 13:33

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 Sun Mar 29, 2026 00:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12238991133,12cyclictest12243-21apt-get19:10:140
12238991011,79cyclictest19919-21timerandwakeup23:00:380
1223899961,78cyclictest14303-21fschecks_count22:15:280
53192920,2sleep00-21swapper/020:20:250
235402900,6sleep31224499cyclictest21:47:403
12238999018,31cyclictest0-21swapper/023:20:180
30692890,3sleep123-21ksoftirqd/120:15:111
12239998926,33cyclictest7850irq/56-dwc_otg_23:20:181
12238998831,37cyclictest7850irq/56-dwc_otg_00:00:280
12238998831,37cyclictest7850irq/56-dwc_otg_00:00:280
12238998828,44cyclictest21361-21/usr/sbin/munin00:20:370
1223899864,40cyclictest0-21swapper/020:10:250
12238998630,39cyclictest30275-21rm22:35:110
1223899861,65cyclictest0-21swapper/019:30:270
1223899841,68cyclictest22436-21unixbench_singl19:35:460
1223899841,68cyclictest22436-21unixbench_singl19:35:460
1223899841,66cyclictest28220-21runrttasks21:53:220
12238998225,4cyclictest17465-21munin-plugin-st19:25:110
12238998114,5cyclictest0-21swapper/022:46:210
1223899801,68cyclictest0-21swapper/020:05:240
1223899801,59cyclictest0-21swapper/020:25:220
1223899801,59cyclictest0-21swapper/020:25:220
306952780,2sleep00-21swapper/023:53:100
1223899781,69cyclictest0-21swapper/021:12:220
1223899781,63cyclictest0-21swapper/023:40:230
12238997620,45cyclictest334-21cat21:20:330
1223899761,62cyclictest0-21swapper/023:37:310
1223899761,62cyclictest0-21swapper/022:05:400
1223899761,16cyclictest0-21swapper/021:55:250
1223899761,16cyclictest0-21swapper/021:55:250
1223899752,15cyclictest21553-21/usr/sbin/munin21:05:420
1223899751,27cyclictest16960-21switchtime20:50:360
1223899744,61cyclictest9980-21ssh21:31:230
1223899742,27cyclictest19928-21chrt22:21:270
1223899741,62cyclictest0-21swapper/023:09:070
1223899741,26cyclictest0-21swapper/021:17:490
1223899741,25cyclictest0-21swapper/020:16:050
12238997226,35cyclictest7750irq/56-dwc_otg23:57:370
1223899721,61cyclictest0-21swapper/000:31:530
1223899721,61cyclictest0-21swapper/000:31:530
1223899721,28cyclictest0-21swapper/021:49:340
1223899712,58cyclictest0-21swapper/022:37:590
1223899711,18cyclictest0-21swapper/022:57:380
1223899702,15cyclictest0-21swapper/023:26:210
1223899695,21cyclictest0-21swapper/023:35:020
1223899692,57cyclictest0-21swapper/019:25:290
1223899691,57cyclictest0-21swapper/000:05:310
1223999684,5cyclictest7850irq/56-dwc_otg_23:40:281
1223899686,49cyclictest0-21swapper/020:55:160
1223899681,64cyclictest145212sleep021:36:500
1223899681,55cyclictest0-21swapper/023:12:170
1223899681,30cyclictest0-21swapper/023:45:180
1223899681,26cyclictest0-21swapper/021:25:580
1223899681,24cyclictest0-21swapper/022:40:500
12238996812,13cyclictest0-21swapper/000:26:160
1223899672,54cyclictest0-21swapper/020:40:110
1223899671,20cyclictest0-21swapper/022:53:220
1223899662,55cyclictest0-21swapper/000:37:320
1223899662,15cyclictest0-21swapper/022:03:590
1223899661,27cyclictest0-21swapper/022:26:170
1223899652,55cyclictest26701-21/usr/sbin/munin19:50:300
1223899651,39cyclictest0-21swapper/019:45:220
1223899651,25cyclictest0-21swapper/021:42:150
1223899651,23cyclictest0-21swapper/000:14:510
1224299643,12cyclictest24577-21ssh00:25:232
1223999641,6cyclictest15795-21latency_hist19:20:121
1223899641,51cyclictest0-21swapper/022:12:440
1223899641,25cyclictest0-21swapper/023:17:080
1223899641,25cyclictest0-21swapper/023:17:080
1223999632,6cyclictest5850-21aten_rbpower_vo22:05:251
12238996324,3cyclictest0-21swapper/019:20:110
12238996310,17cyclictest0-21swapper/000:17:450
1223999618,7cyclictest7850irq/56-dwc_otg_21:50:371
1223899613,34cyclictest0-21swapper/021:00:240
12238996120,33cyclictest0-21swapper/020:45:350
1223899611,20cyclictest0-21swapper/020:00:260
1223999608,4cyclictest0-21swapper/121:55:281
1223999608,4cyclictest0-21swapper/121:55:281
1223899601,43cyclictest28797-21fschecks_time19:55:300
107662600,5sleep121-21rcuc/119:05:291
1223999591,6cyclictest424-21ntpq21:20:341
12239995911,4cyclictest7850irq/56-dwc_otg_22:45:191
1223899591,21cyclictest0-21swapper/020:31:500
1223899591,21cyclictest0-21swapper/019:41:060
1223999584,10cyclictest0-21swapper/123:49:231
1223999572,9cyclictest4298-21ssh00:00:311
1223999572,9cyclictest4298-21ssh00:00:311
1223999569,9cyclictest21530-21cat00:20:391
1223999562,9cyclictest7950irq/56-dwc_otg_19:55:261
1223999561,11cyclictest7750irq/56-dwc_otg23:35:031
1224299556,25cyclictest0-21swapper/219:35:242
1224299556,25cyclictest0-21swapper/219:35:242
1223999543,12cyclictest7950irq/56-dwc_otg_21:12:261
12238995430,5cyclictest12396-21aten_rbpower_en20:40:250
12244995324,8cyclictest7850irq/56-dwc_otg_23:45:243
1223999539,29cyclictest0-21swapper/123:05:251
1223999531,14cyclictest0-21swapper/120:35:361
1223999524,10cyclictest7750irq/56-dwc_otg22:40:241
1223999521,16cyclictest2091-21kworker/u8:221:45:231
12239995210,3cyclictest0-21swapper/100:09:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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