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2026-05-08 - 20:59

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 08, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
298202920,4sleep30-21swapper/310:07:433
298202920,4sleep30-21swapper/310:07:433
147472900,2chrt0-21swapper/209:27:422
147472900,2chrt0-21swapper/209:27:422
147472900,2chrt0-21swapper/209:27:422
173322830,2sleep30-21swapper/311:02:343
173322830,2sleep30-21swapper/311:02:343
173322830,2sleep30-21swapper/311:02:343
187522810,3sleep30-21swapper/309:39:333
187522810,3sleep30-21swapper/309:39:333
204082750,2sleep20-21swapper/209:42:412
204082750,2sleep20-21swapper/209:42:412
204082750,2sleep20-21swapper/209:42:412
249642740,3sleep30-21swapper/311:22:363
249642740,3sleep30-21swapper/311:22:363
249642740,3sleep30-21swapper/311:22:363
242122720,3sleep20-21swapper/209:52:422
242122720,3sleep20-21swapper/209:52:422
242122720,3sleep20-21swapper/209:52:422
246842600,3sleep024686-21grep08:27:420
246842600,3sleep024686-21grep08:27:420
117342540,3sleep30-21swapper/310:47:353
117342540,3sleep30-21swapper/310:47:353
117342540,3sleep30-21swapper/310:47:353
189682530,3chrt0-21swapper/308:12:423
214102520,3sleep00-21swapper/011:12:400
214102520,3sleep00-21swapper/011:12:400
30652460,2sleep30-21swapper/310:22:423
30652460,2sleep30-21swapper/310:22:423
30652460,2sleep30-21swapper/310:22:423
254532450,4sleep025448-21strings09:57:350
254532450,4sleep025448-21strings09:57:350
28114994319,21cyclictest0-21swapper/110:12:191
28114994319,21cyclictest0-21swapper/110:12:191
245232430,3sleep30-21swapper/308:27:423
245232430,3sleep30-21swapper/308:27:423
97712420,2sleep09773-21if_eth010:42:330
97712420,2sleep09773-21if_eth010:42:330
97712420,2sleep09773-21if_eth010:42:330
312592420,2sleep00-21swapper/008:47:320
312592420,2sleep00-21swapper/008:47:320
28114994214,3cyclictest0-21swapper/110:07:361
154512420,3sleep30-21swapper/309:32:293
154512420,3sleep30-21swapper/309:32:293
154512420,3sleep30-21swapper/309:32:293
285332410,3sleep30-21swapper/310:07:313
285332410,3sleep30-21swapper/310:07:313
285332410,3sleep30-21swapper/310:07:313
293322400,4chrt0-21swapper/211:33:042
135972400,2sleep013600-21latency10:52:340
287792390,2chrt28777-21ntp_states11:32:380
28114993916,3cyclictest0-21swapper/109:57:311
28114993916,3cyclictest0-21swapper/109:57:311
28114993916,3cyclictest0-21swapper/109:57:311
28114993913,5cyclictest0-21swapper/112:10:341
28114993913,5cyclictest0-21swapper/112:10:341
149792390,2chrt0-21swapper/208:02:402
149792390,2chrt0-21swapper/208:02:402
28110993831,5cyclictest4520-21sh07:37:190
28110993831,5cyclictest4520-21sh07:37:190
166172380,1sleep30-21swapper/308:07:353
28110993629,6cyclictest6258-21netstat10:32:390
28110993629,6cyclictest6258-21netstat10:32:390
28110993629,5cyclictest20458-21kernelversion12:37:340
28110993629,5cyclictest20458-21kernelversion12:37:340
28110993528,5cyclictest666-21fschecks_time08:52:310
28110993528,5cyclictest666-21fschecks_time08:52:310
28110993526,7cyclictest7887-21unixbench_singl07:42:420
28110993526,7cyclictest7887-21unixbench_singl07:42:420
209822350,3sleep20-21swapper/212:37:402
209822350,3sleep20-21swapper/212:37:402
178862350,2sleep20-21swapper/211:02:412
178862350,2sleep20-21swapper/211:02:412
178862350,2sleep20-21swapper/211:02:412
30412330,2sleep10-21swapper/108:57:391
30412330,2sleep10-21swapper/108:57:391
28114993327,5cyclictest5770-21fschecks_time10:32:341
28114993327,5cyclictest5770-21fschecks_time10:32:341
28110993327,4cyclictest572-21cups-browsed10:17:390
28110993320,11cyclictest31935-21fschecks_count11:42:320
28110993320,11cyclictest31935-21fschecks_count11:42:320
133342330,3sleep20-21swapper/210:52:332
28110993227,3cyclictest5333-21latency_hist10:32:190
28110993227,3cyclictest5333-21latency_hist10:32:190
28110993227,3cyclictest5333-21latency_hist10:32:190
28114993123,6cyclictest25814-21threads09:57:401
28114993123,6cyclictest25814-21threads09:57:401
28114993123,6cyclictest25814-21threads09:57:401
28110993124,5cyclictest3673-21missed_timers11:52:360
28110993124,5cyclictest3673-21missed_timers11:52:360
28110993124,5cyclictest27133-21if_wlan010:02:340
28110993124,5cyclictest27133-21if_wlan010:02:340
28110993124,5cyclictest12605-21sshd10:49:330
28110993124,5cyclictest12605-21sshd10:49:330
28110993124,5cyclictest12605-21sshd10:49:330
28110993122,7cyclictest25508-21fschecks_count08:32:300
28110993122,7cyclictest25508-21fschecks_count08:32:300
197282310,3sleep10-21swapper/108:17:261
289402300,2sleep20-21swapper/210:07:342
289402300,2sleep20-21swapper/210:07:342
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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