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2026-06-06 - 16:12

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 Sat Jun 06, 2026 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2990021320,1sleep30-21swapper/321:52:513
2990021320,1sleep30-21swapper/321:52:513
286492980,2sleep028646-21latency_hist20:22:510
140752980,2sleep00-21swapper/021:08:050
140752980,2sleep00-21swapper/021:08:050
140752980,2sleep00-21swapper/021:08:050
123962910,10sleep112399-21head23:57:591
123962910,10sleep112399-21head23:57:591
3702790,3chrt0-21swapper/021:58:060
3702790,3chrt0-21swapper/021:58:060
225882750,2sleep022586-21grep00:23:070
225882750,2sleep022586-21grep00:23:070
225882750,2sleep022586-21grep00:23:070
225882750,2sleep022586-21grep00:23:070
116552740,5sleep30-21swapper/321:02:583
116552740,5sleep30-21swapper/321:02:583
116552740,5sleep30-21swapper/321:02:583
265962680,2sleep30-21swapper/321:42:583
265962680,2sleep30-21swapper/321:42:583
105252640,3chrt0-21swapper/020:58:080
105252640,3chrt0-21swapper/020:58:080
152712590,2chrt0-21swapper/000:03:330
152712590,2chrt0-21swapper/000:03:330
310192550,3chrt0-21swapper/321:53:073
275882520,2sleep30-21swapper/300:38:013
275882520,2sleep30-21swapper/300:38:013
121332520,2sleep112295-21if_err_eth019:37:581
121332520,2sleep112295-21if_err_eth019:37:581
176262480,4chrt0-21swapper/021:18:020
176262480,4chrt0-21swapper/021:18:020
174132480,3sleep30-21swapper/319:52:513
174132480,3sleep30-21swapper/319:52:513
174132480,3sleep30-21swapper/319:52:513
287532460,3sleep00-21swapper/000:42:480
287532460,3sleep00-21swapper/000:42:480
92322450,5sleep09236-21cut22:22:590
237052450,2chrt0-21swapper/300:28:003
237052450,2chrt0-21swapper/300:28:003
237052450,2chrt0-21swapper/300:28:003
237052450,2chrt0-21swapper/300:28:003
2867994316,16cyclictest2356-21chrt23:31:530
2867994316,16cyclictest2356-21chrt23:31:530
2867994315,17cyclictest12700-21seq21:04:230
2867994315,17cyclictest12700-21seq21:04:230
2867994315,17cyclictest12700-21seq21:04:230
76522420,3sleep30-21swapper/322:18:033
76522420,3sleep30-21swapper/322:18:033
76522420,3sleep30-21swapper/322:18:033
2867994215,17cyclictest8499-21chrt22:21:060
2867994215,17cyclictest8499-21chrt22:21:060
265582420,1sleep00-21swapper/023:08:050
265582420,1sleep00-21swapper/023:08:050
265582420,1sleep00-21swapper/023:08:050
2867994117,13cyclictest30099-21chrt20:24:070
2867994117,13cyclictest30099-21chrt20:24:070
2867994116,14cyclictest29561-21chrt21:49:300
2867994116,14cyclictest29561-21chrt21:49:300
2867994115,16cyclictest25982-21chrt21:41:380
2867994115,16cyclictest25982-21chrt21:41:380
2867994115,16cyclictest25982-21chrt21:41:380
2867994114,8cyclictest20821-21taskset20:00:090
2867994114,8cyclictest20821-21taskset20:00:090
2867994114,8cyclictest20821-21taskset20:00:090
2867994114,16cyclictest1492-21chrt20:35:250
2867994016,13cyclictest8948-21taskset20:54:380
2867994016,10cyclictest14364-21cat22:37:480
2867994016,10cyclictest14364-21cat22:37:480
2867994015,15cyclictest11650-21taskset23:55:370
2867994015,15cyclictest11650-21taskset23:55:370
2867994015,12cyclictest5640-21/usr/sbin/munin20:48:100
2867994015,12cyclictest5640-21/usr/sbin/munin20:48:100
2867994012,9cyclictest27061-21ntp_states21:43:030
2867994012,9cyclictest27061-21ntp_states21:43:030
2867994012,9cyclictest27061-21ntp_states21:43:030
2867994012,13cyclictest16831-21sed21:17:500
2867994012,13cyclictest16831-21sed21:17:500
2867994012,13cyclictest16831-21sed21:17:500
2867993916,9cyclictest21756-21/usr/sbin/munin21:28:070
2867993916,9cyclictest21756-21/usr/sbin/munin21:28:070
2867993916,9cyclictest21756-21/usr/sbin/munin21:28:070
2867993916,13cyclictest372-21taskset23:25:530
2867993916,13cyclictest372-21taskset23:25:530
2867993916,13cyclictest372-21taskset23:25:530
2867993915,14cyclictest24640-21runrttasks00:28:570
2867993915,14cyclictest24640-21runrttasks00:28:570
2867993915,14cyclictest24640-21runrttasks00:28:570
2867993915,14cyclictest23490-21chrt23:01:060
2867993915,14cyclictest23490-21chrt23:01:060
2867993915,14cyclictest23490-21chrt23:01:060
2867993915,13cyclictest26402-21chrt20:14:510
2867993915,13cyclictest26402-21chrt20:14:510
2867993915,13cyclictest24465-21seq20:08:520
2867993914,14cyclictest4160-21runrttasks23:36:030
2867993914,14cyclictest4160-21runrttasks23:36:030
2867993914,14cyclictest4160-21runrttasks23:36:030
2867993913,15cyclictest9665-21taskset23:49:010
2867993913,15cyclictest9665-21taskset23:49:010
2867993913,15cyclictest9665-21taskset23:49:010
2867993913,11cyclictest9940-21cat19:32:520
2867993913,11cyclictest9940-21cat19:32:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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