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2026-06-21 - 09:33

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 Sun Jun 21, 2026 00:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2211521190,3sleep20-21swapper/223:18:072
2211521190,3sleep20-21swapper/223:18:072
195822940,1chrt19584-21cat21:43:141
195822940,1chrt19584-21cat21:43:141
195822940,1chrt19584-21cat21:43:141
266662750,2chrt26665-21ntpq23:28:191
266662750,2chrt26665-21ntpq23:28:191
266662750,2chrt26665-21ntpq23:28:191
46512670,3sleep20-21swapper/221:03:162
46512670,3sleep20-21swapper/221:03:162
20182650,2sleep12206-21grep23:48:221
20182650,2sleep12206-21grep23:48:221
125422650,3sleep20-21swapper/200:18:132
91642630,4sleep20-21swapper/200:08:162
91642630,4sleep20-21swapper/200:08:162
31762610,3sleep20-21swapper/219:33:152
250742600,2chrt0-21swapper/120:33:031
250742600,2chrt0-21swapper/120:33:031
250742600,2chrt0-21swapper/120:33:031
274072540,3sleep30-21swapper/320:38:123
274072540,3sleep30-21swapper/320:38:123
257172520,3sleep10-21swapper/121:58:221
257172520,3sleep10-21swapper/121:58:221
166292490,3sleep20-21swapper/223:03:112
166292490,3sleep20-21swapper/223:03:112
166292490,3sleep20-21swapper/223:03:112
175562460,4sleep20-21swapper/221:38:132
175562460,4sleep20-21swapper/221:38:132
72292450,2sleep20-21swapper/222:38:122
72292450,2sleep20-21swapper/222:38:122
72292450,2sleep20-21swapper/222:38:122
274382440,2sleep10-21swapper/122:03:211
274382440,2sleep10-21swapper/122:03:211
27950994338,3cyclictest25858-21kworker/u9:3-xprtiod00:03:161
27949994135,4cyclictest1346-21avahi-daemon00:03:520
27949994135,4cyclictest1346-21avahi-daemon00:03:520
27949994135,4cyclictest1346-21avahi-daemon00:03:520
27949994134,4cyclictest0-21swapper/000:03:070
27949994134,4cyclictest0-21swapper/000:03:070
27949994134,4cyclictest0-21swapper/000:03:070
326552390,3chrt0-21swapper/120:53:091
277032380,2sleep027786-21cpuspeed23:33:090
277032380,2sleep027786-21cpuspeed23:33:090
277032380,2sleep027786-21cpuspeed23:33:090
217902370,2sleep30-21swapper/320:23:133
217902370,2sleep30-21swapper/320:23:133
161282370,3sleep10-21swapper/120:08:111
161282370,3sleep10-21swapper/120:08:111
27950993631,3cyclictest20065-21kernelversion20:18:141
27950993631,3cyclictest20065-21kernelversion20:18:141
228452360,2chrt22847-21latency_hist21:53:111
228452360,2chrt22847-21latency_hist21:53:111
156462360,2sleep30-21swapper/322:58:233
156462360,2sleep30-21swapper/322:58:233
156462360,2sleep30-21swapper/322:58:233
2796399352,23cyclictest6493-21chrt00:03:063
2796399352,23cyclictest6493-21chrt00:03:063
2796399352,23cyclictest6493-21chrt00:03:063
189402350,1sleep10-21swapper/121:43:061
189402350,1sleep10-21swapper/121:43:061
17272350,3sleep20-21swapper/219:28:202
17272350,3sleep20-21swapper/219:28:202
17272350,3sleep20-21swapper/219:28:202
287522340,1sleep30-21swapper/323:33:193
287522340,1sleep30-21swapper/323:33:193
287522340,1sleep30-21swapper/323:33:193
27950993427,5cyclictest27161-21latency_hist20:38:111
27950993427,5cyclictest17024-21threads00:28:221
27950993427,5cyclictest17024-21threads00:28:221
27950993427,5cyclictest17024-21threads00:28:221
27950993427,5cyclictest12377-21gltestperf19:58:131
27950993427,5cyclictest12377-21gltestperf19:58:131
27949993427,5cyclictest719-21kernelversion20:53:140
27949993427,5cyclictest719-21kernelversion20:53:140
258782340,4sleep20-21swapper/221:58:232
258782340,4sleep20-21swapper/221:58:232
27950993328,2cyclictest0-21swapper/119:33:211
27950993326,5cyclictest0-21swapper/100:03:121
27950993326,5cyclictest0-21swapper/100:03:121
27949993327,4cyclictest14474-21idleruntime-cro22:57:590
27949993327,4cyclictest14474-21idleruntime-cro22:57:590
27949993327,4cyclictest14474-21idleruntime-cro22:57:590
27950993227,3cyclictest4352-21kworker/u9:0-xprtiod00:03:571
27950993227,3cyclictest4352-21kworker/u9:0-xprtiod00:03:571
27950993227,3cyclictest4352-21kworker/u9:0-xprtiod00:03:571
27950993226,4cyclictest572-21cups-browsed22:58:221
27950993226,4cyclictest572-21cups-browsed22:58:221
27950993226,4cyclictest572-21cups-browsed22:58:221
27950993224,5cyclictest15941-21latency_hist00:28:071
27950993224,5cyclictest15941-21latency_hist00:28:071
27950993224,5cyclictest15941-21latency_hist00:28:071
27949993224,6cyclictest9572-21unixbench_singl19:48:210
27949993224,6cyclictest9572-21unixbench_singl19:48:210
27949993223,6cyclictest9889-21fschecks_time21:18:120
27949993223,6cyclictest9889-21fschecks_time21:18:120
27949993223,6cyclictest9889-21fschecks_time21:18:120
27950993126,4cyclictest749-21runrttasks19:18:151
27950993126,4cyclictest749-21runrttasks19:18:151
27950993126,3cyclictest0-21swapper/100:42:591
27950993126,3cyclictest0-21swapper/100:42:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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