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2026-09-22 - 23:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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 rack4slot1s.osadl.org (updated Tue Sep 22, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1411121300,4sleep3431rcuc/307:54:473
1411121300,4sleep3431rcuc/307:54:473
1876321170,3sleep20-21swapper/208:09:372
1013621110,2chrt0-21swapper/110:39:351
1013621110,2chrt0-21swapper/110:39:351
1013621110,2chrt0-21swapper/110:39:351
184972880,2sleep118501-21switchtime10:59:451
184972880,2sleep118501-21switchtime10:59:451
184972880,2sleep118501-21switchtime10:59:451
76742820,3sleep30-21swapper/309:04:463
76742820,3sleep30-21swapper/309:04:463
308952820,5sleep30-21swapper/311:34:373
303512800,2sleep130350-21irqstats08:39:391
303512800,2sleep130350-21irqstats08:39:391
58392710,2chrt0-21swapper/208:59:462
58392710,2chrt0-21swapper/208:59:462
305652640,3sleep20-21swapper/211:34:322
66472620,2sleep10-21swapper/111:54:491
86632610,4sleep10-21swapper/111:59:471
86632610,4sleep10-21swapper/111:59:471
197962570,3chrt0-21swapper/311:04:383
10922570,2chrt0-21swapper/108:49:281
3083999511,1cyclictest0-21swapper/012:18:350
287592500,2chrt28757-21cpu11:29:350
261822500,3sleep20-21swapper/208:29:352
261822500,3sleep20-21swapper/208:29:352
259442490,3chrt0-21swapper/311:19:453
259442490,3chrt0-21swapper/311:19:453
252802490,3sleep20-21swapper/208:24:462
252802490,3sleep20-21swapper/208:24:462
3083999481,9cyclictest20102-21taskset12:29:490
3083999481,9cyclictest20102-21taskset12:29:490
3083999481,8cyclictest26129-21taskset08:29:320
3083999481,8cyclictest26129-21taskset08:29:320
30839994818,27cyclictest16564-21basename08:04:240
30839994818,27cyclictest16564-21basename08:04:240
30839994818,27cyclictest16564-21basename08:04:240
122392480,2sleep20-21swapper/207:49:482
3083999471,7cyclictest1379-21chrt11:40:330
3083999471,7cyclictest1379-21chrt11:40:330
3083999471,29cyclictest0-21swapper/010:50:590
3083999470,10cyclictest28755-21taskset10:00:190
3083999470,10cyclictest28755-21taskset10:00:190
3083999470,10cyclictest28755-21taskset10:00:190
3083999461,8cyclictest21923-21chrt08:16:270
3083999461,7cyclictest7155-21chrt11:57:170
3083999461,7cyclictest23361-21taskset09:47:480
3083999461,7cyclictest15873-21chrt09:27:340
3083999461,7cyclictest12060-21taskset09:17:080
3083999461,7cyclictest12060-21taskset09:17:080
3083999461,6cyclictest6991-21chrt07:37:150
3083999461,6cyclictest6991-21chrt07:37:150
3083999461,5cyclictest731-21taskset08:46:380
3083999461,27cyclictest0-21swapper/007:44:300
3083999461,27cyclictest0-21swapper/007:44:300
3083999461,1cyclictest0-21swapper/009:21:270
3083999461,1cyclictest0-21swapper/009:21:270
3083999461,10cyclictest4609-21taskset08:58:280
3083999451,9cyclictest9134-21chrt12:03:280
3083999451,9cyclictest9134-21chrt12:03:280
3083999451,9cyclictest31283-21seq08:41:350
3083999451,9cyclictest31283-21seq08:41:350
3083999451,7cyclictest3914-21chrt10:21:330
3083999451,7cyclictest3914-21chrt10:21:330
3083999451,30cyclictest5143-21taskset07:32:490
3083999450,8cyclictest9704-21taskset10:38:130
3083999450,8cyclictest19475-21taskset09:36:000
3083999450,8cyclictest19475-21taskset09:36:000
3083999450,8cyclictest11327-21taskset10:40:060
3083999450,8cyclictest11327-21taskset10:40:060
3083999450,8cyclictest11327-21taskset10:40:060
3083999450,7cyclictest8140-21chrt09:05:190
3083999450,7cyclictest8140-21chrt09:05:190
3083999447,22cyclictest17779-21seq09:33:090
3083999447,22cyclictest17779-21seq09:33:090
3083999441,8cyclictest21463-21seq09:42:380
3083999441,8cyclictest21463-21seq09:42:380
3083999441,7cyclictest10846-21taskset12:06:130
3083999441,6cyclictest5330-21taskset11:52:470
3083999441,6cyclictest5330-21taskset11:52:470
3083999441,6cyclictest30881-21chrt10:08:190
3083999441,6cyclictest30881-21chrt10:08:190
3083999441,5cyclictest17070-21taskset10:56:350
3083999441,5cyclictest17070-21taskset10:56:350
3083999441,4cyclictest12875-21chrt12:13:250
3083999441,4cyclictest12875-21chrt12:13:250
3083999440,8cyclictest25570-21chrt08:25:030
3083999440,8cyclictest25570-21chrt08:25:030
3083999440,7cyclictest29479-21seq08:37:290
3083999440,7cyclictest25164-21seq09:52:020
3083999440,7cyclictest25164-21seq09:52:020
3083999440,7cyclictest20252-21chrt08:13:580
3083999440,3cyclictest700-21192.168.115.40-manager11:07:060
281062440,3sleep128101-21gzip09:59:431
281062440,3sleep128101-21gzip09:59:431
281062440,3sleep128101-21gzip09:59:431
230382440,3sleep10-21swapper/112:39:391
230382440,3sleep10-21swapper/112:39:391
230382440,3sleep10-21swapper/112:39:391
3083999431,4cyclictest18817-21chrt11:00:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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