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2026-05-01 - 21:07

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 May 01, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1189321100,3sleep30-21swapper/312:07:313
1189321100,3sleep30-21swapper/312:07:313
1189321100,3sleep30-21swapper/312:07:313
770721090,3sleep30-21swapper/307:37:253
838821070,2sleep30-21swapper/309:07:143
838821070,2sleep30-21swapper/309:07:143
41862990,3chrt0-21swapper/311:47:293
41862990,3chrt0-21swapper/311:47:293
132072830,3chrt0-21swapper/209:17:342
132072830,3chrt0-21swapper/209:17:342
132072830,3chrt0-21swapper/209:17:342
23112740,2sleep10-21swapper/107:22:291
23112740,2sleep10-21swapper/107:22:291
176702720,2chrt17669-21/usr/sbin/munin12:22:321
176702720,2chrt17669-21/usr/sbin/munin12:22:321
176702720,2chrt17669-21/usr/sbin/munin12:22:321
298892700,3sleep30-21swapper/311:27:353
298892700,3sleep30-21swapper/311:27:353
298892700,3sleep30-21swapper/311:27:353
326422690,1sleep00-21swapper/008:42:340
326422690,1sleep00-21swapper/008:42:340
326422690,1sleep00-21swapper/008:42:340
56942680,2sleep30-21swapper/308:57:333
56942680,2sleep30-21swapper/308:57:333
150012660,2sleep0171ktimers/009:22:300
150012660,2sleep0171ktimers/009:22:300
150012660,2sleep0171ktimers/009:22:300
202572650,2sleep30-21swapper/311:02:353
202572650,2sleep30-21swapper/311:02:353
185732640,3chrt0-21swapper/212:27:162
185732640,3chrt0-21swapper/212:27:162
185732640,3chrt0-21swapper/212:27:162
266162580,3sleep20-21swapper/211:22:162
266162580,3sleep20-21swapper/211:22:162
35482570,3sleep30-21swapper/311:47:173
35482570,3sleep30-21swapper/311:47:173
231662560,2chrt23165-21sendmail_mailtr08:17:340
231662560,2chrt23165-21sendmail_mailtr08:17:340
231662560,2chrt23165-21sendmail_mailtr08:17:340
65402530,1sleep00-21swapper/010:27:260
65402530,1sleep00-21swapper/010:27:260
299042510,2sleep10-21swapper/108:37:261
299042510,2sleep10-21swapper/108:37:261
292412490,1sleep00-21swapper/011:27:280
292412490,1sleep00-21swapper/011:27:280
292412490,1sleep00-21swapper/011:27:280
135322490,3sleep30-21swapper/310:47:193
135322490,3sleep30-21swapper/310:47:193
19992460,2chrt0-21swapper/207:22:252
19992460,2chrt0-21swapper/207:22:252
17042460,2sleep01709-21unixbench_multi10:12:350
17042460,2sleep01709-21unixbench_multi10:12:350
237122430,3sleep022446-21/usr/sbin/munin12:37:350
104362430,4sleep20-21swapper/207:42:352
104362430,4sleep20-21swapper/207:42:352
274422410,4chrt0-21swapper/111:22:311
274422410,4chrt0-21swapper/111:22:311
248572410,2sleep20-21swapper/211:17:212
203952390,2sleep20-21swapper/209:37:282
203952390,2sleep20-21swapper/209:37:282
85092380,2sleep10-21swapper/110:32:261
30418993829,7cyclictest31772-21netstat10:07:301
30418993829,7cyclictest31772-21netstat10:07:301
30418993828,6cyclictest17758-21sh09:32:131
30418993828,6cyclictest17758-21sh09:32:131
30418993828,6cyclictest17758-21sh09:32:131
175302380,3sleep30-21swapper/310:57:243
175302380,3sleep30-21swapper/310:57:243
175302380,3sleep30-21swapper/310:57:243
30415993720,14cyclictest16446-21systemctl08:02:120
30415993720,14cyclictest16446-21systemctl08:02:120
277562370,3chrt0-21swapper/209:57:262
277562370,3chrt0-21swapper/209:57:262
27062360,2sleep12714-21idleruntime-cro08:52:131
27062360,2sleep12714-21idleruntime-cro08:52:131
59912340,3sleep15994-21unixbench_multi08:57:351
59912340,3sleep15994-21unixbench_multi08:57:351
30418993428,5cyclictest18062-21needreboot10:57:301
30418993428,5cyclictest18062-21needreboot10:57:301
30418993428,5cyclictest18062-21needreboot10:57:301
263552340,2sleep30-21swapper/309:52:323
263552340,2sleep30-21swapper/309:52:323
30415993325,6cyclictest774-21gltestperf10:12:250
192852330,3chrt0-21swapper/308:07:323
192852330,3chrt0-21swapper/308:07:323
30418993228,3cyclictest30414-21cyclictest10:27:241
30418993228,3cyclictest30414-21cyclictest10:27:241
30415993222,8cyclictest12599-21processes10:42:310
30415993222,8cyclictest12599-21processes10:42:310
30418993122,7cyclictest30212-21threads10:02:331
30418993122,7cyclictest30212-21threads10:02:331
30418993122,7cyclictest27498-21fschecks_count09:57:241
30418993122,7cyclictest27498-21fschecks_count09:57:241
30415993127,3cyclictest16915-21fschecks_time08:02:250
30415993127,3cyclictest16915-21fschecks_time08:02:250
30418993025,3cyclictest19214-21needreboot08:07:311
30418993025,3cyclictest19214-21needreboot08:07:311
30418993025,3cyclictest11377-21tail07:47:261
30418993023,6cyclictest9406-21processes09:07:341
30418993023,5cyclictest9691-21idleruntime-cro10:37:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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