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2025-12-21 - 06:36

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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 rackbslot5s.osadl.org (updated Sun Dec 21, 2025 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
240779995145,4cyclictest326736-21kworker/u8:1+events_unbound00:08:412
240771994736,7cyclictest261364-21grep20:05:260
240771994735,9cyclictest354743-21sendmail00:40:000
240771994635,6cyclictest331709-21grep23:30:260
240771994635,6cyclictest331709-21grep23:30:260
240784994433,8cyclictest333427-21grep23:35:283
240771994436,4cyclictest337245-21cron23:50:010
240779994336,4cyclictest263480-21idleruntime-cro20:15:002
240779994236,4cyclictest268821-21kworker/u8:0+events_unbound20:42:582
240775994232,7cyclictest320209-21sendmail23:00:001
240771994229,6cyclictest0-21swapper/000:05:250
240784994133,6cyclictest344133-21kworker/u8:2+events_unbound00:13:433
240779994134,4cyclictest285899-21idleruntime-cro21:20:012
240784994032,4cyclictest326736-21kworker/u8:1+events_unbound23:33:363
240784994032,4cyclictest326736-21kworker/u8:1+events_unbound23:33:363
240771994028,8cyclictest329970-21grep23:25:260
240775993931,6cyclictest309350-21unixbench_singl22:25:261
240784993830,5cyclictest337258-21ls23:50:013
240779993831,5cyclictest345859-21kworker/u8:0+events_unbound00:24:412
240779993831,4cyclictest314888-21apt-get22:45:012
240779993830,5cyclictest264709-21unixbench_multi20:15:292
240779993828,7cyclictest438-21cron19:50:002
240775993831,4cyclictest313148-21cron22:40:011
240771993826,8cyclictest271602-21grep20:35:270
240771993826,8cyclictest271602-21grep20:35:270
240779993727,7cyclictest354751-21sendmail00:40:002
240779993726,7cyclictest0-21swapper/223:20:002
240775993729,4cyclictest0-21swapper/121:25:291
240771993729,5cyclictest342136-21unixbench_multi00:00:270
240771993727,6cyclictest0-21swapper/019:35:270
240771993722,11cyclictest121ktimers/000:20:110
240784993628,4cyclictest0-21swapper/320:10:293
240779993629,5cyclictest300948-21kworker/u8:0+events_unbound22:08:212
240779993628,4cyclictest0-21swapper/222:53:272
240775993625,8cyclictest292714-21sendmail21:40:001
240771993626,6cyclictest296114-21idleruntime-cro21:50:000
240771993626,4cyclictest0-21swapper/019:42:410
240771993625,7cyclictest292223-21grep21:35:260
240771993624,6cyclictest321484-21head23:00:280
240784993528,4cyclictest0-21swapper/322:50:003
240784993527,5cyclictest293085-21fschecks_count21:40:173
240784993526,6cyclictest299927-21fschecks_count22:00:153
240779993527,4cyclictest0-21swapper/220:00:002
240779993527,4cyclictest0-21swapper/220:00:002
240779993523,8cyclictest345859-21kworker/u8:0-ext4-rsv-conversion00:20:002
240775993526,6cyclictest0-21swapper/123:15:001
240775993526,6cyclictest0-21swapper/122:05:001
240771993511,13cyclictest11-21ksoftirqd/019:15:040
240784993427,4cyclictest309753-21auditctl22:30:003
240779993426,4cyclictest0-21swapper/221:00:172
24077199349,7cyclictest11-21ksoftirqd/019:50:000
24077199349,6cyclictest11-21ksoftirqd/020:55:010
24077199348,6cyclictest151rcuc/021:15:260
240771993424,6cyclictest0-21swapper/020:20:000
240771993423,6cyclictest0-21swapper/000:15:250
240771993421,8cyclictest0-21swapper/000:10:250
240784993322,7cyclictest324852-21grep23:10:263
240779993326,3cyclictest0-21swapper/221:45:162
240779993325,4cyclictest0-21swapper/223:58:382
240779993325,4cyclictest0-21swapper/221:35:012
240779993324,4cyclictest0-21swapper/222:30:002
240779993316,5cyclictest325027-21kworker/u8:2+events_unbound23:12:002
240775993326,5cyclictest244712-21munin-plugin-st19:20:011
240775993326,4cyclictest0-21swapper/119:25:291
240775993325,4cyclictest0-21swapper/119:55:181
240775993325,4cyclictest0-21swapper/119:55:181
240771993322,6cyclictest0-21swapper/023:10:160
240771993322,6cyclictest0-21swapper/022:35:270
240771993322,6cyclictest0-21swapper/000:30:250
240784993226,4cyclictest251228-21kworker/u8:1+events_unbound19:37:423
240784993225,5cyclictest242108-21kworker/u8:0+events_unbound19:27:383
240784993225,4cyclictest0-21swapper/300:18:423
240779993226,4cyclictest320136-21kworker/u8:2+events_unbound23:03:302
240779993224,4cyclictest0-21swapper/223:20:272
240779993222,7cyclictest351115-21apt00:30:002
24077199328,6cyclictest11-21ksoftirqd/020:45:240
24077199328,6cyclictest0-21swapper/021:10:240
240771993226,4cyclictest0-21swapper/019:30:140
240784993125,4cyclictest242108-21kworker/u8:0+events_unbound19:17:373
240784993124,4cyclictest0-21swapper/320:25:003
240784993123,4cyclictest0-21swapper/300:30:163
24078499311,4cyclictest131rcu_preempt23:00:143
24077999313,6cyclictest131rcu_preempt23:05:142
240779993122,5cyclictest0-21swapper/219:50:272
240775993124,4cyclictest0-21swapper/121:15:021
240775993123,6cyclictest338551-21timerandwakeup23:50:231
240775993123,4cyclictest0-21swapper/123:20:271
240775993120,8cyclictest276850-21grep20:50:251
240775993115,13cyclictest240765-21cyclictest00:20:111
24077199319,7cyclictest0-21swapper/022:20:260
24077199317,6cyclictest0-21swapper/023:35:250
24077199316,7cyclictest350392-21grep00:25:260
240771993120,6cyclictest0-21swapper/022:05:290
240779993020,7cyclictest271996-21sh20:40:002
240779993020,7cyclictest271996-21sh20:40:002
240779993019,7cyclictest0-21swapper/221:55:252
240775993024,4cyclictest258217-21kworker/u8:1+events_unbound20:12:511
240775993024,4cyclictest240765-21cyclictest23:20:001
240775993022,4cyclictest0-21swapper/100:00:001
240775993021,6cyclictest0-21swapper/100:30:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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