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2026-07-17 - 01:45

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 Thu Jul 16, 2026 12:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2320221090,4sleep20-21swapper/211:43:362
242772910,2sleep20-21swapper/210:18:422
242772910,2sleep20-21swapper/210:18:422
242772910,2sleep20-21swapper/210:18:422
83602880,2sleep30-21swapper/308:08:463
83602880,2sleep30-21swapper/308:08:463
212252860,3sleep30-21swapper/308:43:433
306242850,2sleep20-21swapper/209:08:432
306242850,2sleep20-21swapper/209:08:432
306242850,2sleep20-21swapper/209:08:432
16422820,3sleep30-21swapper/312:13:323
16422820,3sleep30-21swapper/312:13:323
29342810,3chrt0-21swapper/312:13:483
29342810,3chrt0-21swapper/312:13:483
29342810,3chrt0-21swapper/312:13:483
7802720,2sleep00-21swapper/010:43:360
23552710,2sleep02357-21tail12:13:410
23552710,2sleep02357-21tail12:13:410
23552710,2sleep02357-21tail12:13:410
311122650,2sleep131138-21ntp_states12:03:421
311122650,2sleep131138-21ntp_states12:03:421
269352640,6sleep026939-21gltestperf11:53:350
41912630,1sleep016-21ksoftirqd/010:53:330
41912630,1sleep016-21ksoftirqd/010:53:330
251452570,4chrt25144-21basename10:23:220
251452570,4chrt25144-21basename10:23:220
251452570,4chrt25144-21basename10:23:220
263782550,3chrt0-21swapper/007:33:260
263782550,3chrt0-21swapper/007:33:260
19277994620,24cyclictest28085-21sshd11:55:501
19277994620,24cyclictest28085-21sshd11:55:501
143562460,3sleep30-21swapper/309:53:343
143562460,3sleep30-21swapper/309:53:343
143562460,3sleep30-21swapper/309:53:343
143562460,3sleep30-21swapper/309:53:343
19277994522,21cyclictest23630-21sshd08:50:501
19277994522,21cyclictest23630-21sshd08:50:501
19277994319,5cyclictest1269-21sshd07:52:501
19277994319,5cyclictest1269-21sshd07:52:501
103912430,2sleep20-21swapper/212:33:452
103912430,2sleep20-21swapper/212:33:452
103912430,2sleep20-21swapper/212:33:452
273022420,3sleep30-21swapper/311:53:383
273022420,3sleep30-21swapper/311:53:383
219702420,2sleep021973-21sed10:13:370
219702420,2sleep021973-21sed10:13:370
45292410,2sleep04693-21sed12:18:440
45292410,2sleep04693-21sed12:18:440
45292410,2sleep04693-21sed12:18:440
135952400,3sleep00-21swapper/011:18:330
135952400,3sleep00-21swapper/011:18:330
19277993919,3cyclictest23257-21latency_hist10:18:251
19277993919,3cyclictest23257-21latency_hist10:18:251
126632390,3sleep20-21swapper/211:13:452
126632390,3sleep20-21swapper/211:13:452
184542360,2sleep20-21swapper/210:03:382
184542360,2sleep20-21swapper/210:03:382
19277993427,5cyclictest1983-21threads09:18:451
19277993427,5cyclictest1983-21threads09:18:451
19277993427,5cyclictest1983-21threads09:18:451
19277993427,5cyclictest19269-21cyclictest10:18:431
19277993427,5cyclictest19269-21cyclictest10:18:431
19277993427,5cyclictest19269-21cyclictest10:18:431
19271993428,4cyclictest31499-21timerwakeupswit12:03:450
19271993428,4cyclictest31499-21timerwakeupswit12:03:450
19271993427,5cyclictest21378-21gltestperf11:38:350
19271993427,5cyclictest21378-21gltestperf11:38:350
19277993327,4cyclictest19269-21cyclictest11:38:451
19277993327,4cyclictest19269-21cyclictest11:38:451
19277993327,4cyclictest19269-21cyclictest11:38:451
19277993327,4cyclictest19269-21cyclictest11:38:451
19271993326,5cyclictest24916-21fschecks_count11:48:340
19271993326,5cyclictest24916-21fschecks_count11:48:340
19271993223,7cyclictest18377-21kernelversion10:03:380
19271993223,7cyclictest18377-21kernelversion10:03:380
19277993126,3cyclictest7704-21sendmail11:03:231
19277993122,7cyclictest3618-21fschecks_time07:58:371
19277993122,7cyclictest3618-21fschecks_time07:58:371
19277993122,7cyclictest3618-21fschecks_time07:58:371
19277993122,7cyclictest23050-21fschecks_time07:23:371
19271993123,6cyclictest1466-21idleruntime-cro12:13:220
19271993123,6cyclictest1466-21idleruntime-cro12:13:220
19271993122,7cyclictest10290-21kernelversion11:08:360
19271993122,7cyclictest10290-21kernelversion11:08:360
142182310,3sleep20-21swapper/211:18:402
142182310,3sleep20-21swapper/211:18:402
142182310,3sleep20-21swapper/211:18:402
22362300,2sleep12255-21cat10:48:331
22362300,2sleep12255-21cat10:48:331
22362300,2sleep12255-21cat10:48:331
19277993025,4cyclictest30960-21sshd09:09:021
19277993025,4cyclictest30960-21sshd09:09:021
19277993025,4cyclictest30960-21sshd09:09:021
19277993024,5cyclictest9179-21needreboot09:38:411
19277993024,5cyclictest9179-21needreboot09:38:411
19277993024,5cyclictest9179-21needreboot09:38:411
19277993023,5cyclictest6030-21latency12:23:361
19277993023,5cyclictest6030-21latency12:23:361
19277993023,5cyclictest19798-21missed_timers11:33:391
19277993023,5cyclictest19798-21missed_timers11:33:391
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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