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2026-08-28 - 10:47

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 Fri Aug 28, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2275421070,2chrt21254-40mandb00:04:410
2275421070,2chrt21254-40mandb00:04:410
234392680,3sleep20-21swapper/200:09:132
38802660,2chrt0-21swapper/023:14:230
38802660,2chrt0-21swapper/023:14:230
227712630,4sleep20-21swapper/200:04:552
227712630,4sleep20-21swapper/200:04:552
219472600,3chrt21946-21irqstats00:04:171
219472600,3chrt21946-21irqstats00:04:171
31252590,3sleep03031-21latency_hist21:49:050
240642590,2chrt0-21swapper/019:49:210
240642590,2chrt0-21swapper/019:49:210
269122570,3sleep20-21swapper/222:49:252
101322560,2sleep010131-21unixbench_singl22:04:250
101322560,2sleep010131-21unixbench_singl22:04:250
130862550,3sleep20-21swapper/220:49:052
145652510,1sleep00-21swapper/023:44:140
131262450,1sleep00-21swapper/023:39:240
131262450,1sleep00-21swapper/023:39:240
131262450,1sleep00-21swapper/023:39:240
131262450,1sleep00-21swapper/023:39:240
261042430,2sleep126227-21cat00:14:231
261042430,2sleep126227-21cat00:14:231
251232430,2sleep20-21swapper/221:19:202
251232430,2sleep20-21swapper/221:19:202
207282430,2sleep20-21swapper/222:34:182
251772420,3sleep20-21swapper/200:14:122
251772420,3sleep20-21swapper/200:14:122
283512410,4sleep20-21swapper/222:54:192
283512410,4sleep20-21swapper/222:54:192
314752400,4sleep30-21swapper/323:04:133
314752400,4sleep30-21swapper/323:04:133
257352400,3sleep30-21swapper/319:54:203
257352400,3sleep30-21swapper/319:54:203
10492994034,5cyclictest21256-21latency_hist00:04:021
10492994034,5cyclictest21256-21latency_hist00:04:021
10492994034,5cyclictest21256-21latency_hist00:04:021
97042380,4sleep09703-21grep20:39:140
97042380,4sleep09703-21grep20:39:140
178542380,4sleep20-21swapper/220:59:232
178542380,4sleep20-21swapper/220:59:232
127222380,2sleep00-21swapper/020:46:060
244652370,3sleep30-21swapper/321:19:133
244652370,3sleep30-21swapper/321:19:133
10492993729,6cyclictest10489-21cyclictest00:24:161
10492993729,6cyclictest10489-21cyclictest00:24:161
11592360,3sleep20-21swapper/200:34:222
10492993629,5cyclictest20446-21cron21:09:011
10492993629,5cyclictest20446-21cron21:09:011
283762350,3chrt0-21swapper/322:54:213
283762350,3chrt0-21swapper/322:54:213
56602340,3sleep30-21swapper/323:19:253
56602340,3sleep30-21swapper/323:19:253
10492993428,4cyclictest2426-21gltestperf00:39:161
10492993428,4cyclictest2426-21gltestperf00:39:161
10491993427,5cyclictest22505-21kernelversion22:39:180
10491993427,5cyclictest22505-21kernelversion22:39:180
10491993427,4cyclictest1-21systemd20:35:210
10492993328,3cyclictest0-21swapper/120:04:011
10492993328,3cyclictest0-21swapper/120:04:011
10491993329,3cyclictest14854-21latency_hist20:54:010
236912320,3sleep10-21swapper/122:44:011
236912320,3sleep10-21swapper/122:44:011
1049599323,21cyclictest21353-21taskset00:04:073
1049599323,21cyclictest21353-21taskset00:04:073
1049599323,21cyclictest21353-21taskset00:04:073
1049599322,20cyclictest22762-21taskset00:04:483
1049599322,20cyclictest22762-21taskset00:04:483
1049399321,24cyclictest21327-21taskset00:04:062
1049399321,24cyclictest21327-21taskset00:04:062
1049399321,24cyclictest21327-21taskset00:04:062
10492993227,4cyclictest1138-21latency_hist21:44:011
10492993227,4cyclictest1138-21latency_hist21:44:011
10491993226,3cyclictest0-21swapper/000:04:050
10491993226,3cyclictest0-21swapper/000:04:050
10491993226,3cyclictest0-21swapper/000:04:050
10492993125,4cyclictest30909-21gltestperf20:09:141
10492993125,4cyclictest30909-21gltestperf20:09:141
10492993125,4cyclictest15376-21gltestperf20:54:141
10492993125,4cyclictest15376-21gltestperf20:54:141
10492993124,5cyclictest15768-21unixbench_singl22:19:241
10492993124,5cyclictest15768-21unixbench_singl22:19:241
10492993124,4cyclictest0-21swapper/123:44:011
10492993124,4cyclictest0-21swapper/123:44:011
10492993124,4cyclictest0-21swapper/123:44:011
10492993124,4cyclictest0-21swapper/123:44:011
10491993126,3cyclictest28484-21cron20:04:010
10491993126,3cyclictest28484-21cron20:04:010
10491993123,6cyclictest18716-21sshd21:04:060
10491993123,6cyclictest18716-21sshd21:04:060
10491993120,9cyclictest0-21swapper/021:39:140
10491993120,9cyclictest0-21swapper/021:39:140
1049599301,8cyclictest9170-21chrt20:38:413
10492993025,4cyclictest374-21idleruntime20:14:151
10492993025,4cyclictest374-21idleruntime20:14:151
10492993025,3cyclictest749-21runrttasks22:59:121
10492993025,3cyclictest749-21runrttasks22:59:121
10492993025,3cyclictest749-21runrttasks22:59:121
10492993024,4cyclictest9400-21latency_hist20:39:071
10492993024,4cyclictest7304-21gltestperf21:59:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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