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2025-12-09 - 00:03

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 Mon Dec 08, 2025 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1274440995648,5cyclictest1283498-21munin-plugin-st07:35:013
1274432994841,4cyclictest1295848-21auditctl08:10:001
1274436994538,4cyclictest1316330-21cron09:10:002
1274432994433,7cyclictest1323255-21latency_hist09:30:001
1274432994433,7cyclictest1323255-21latency_hist09:30:001
1274440994231,7cyclictest1341943-21grep10:20:263
1274432994234,5cyclictest1307787-21cron08:45:001
1274427994232,6cyclictest1337434-21fschecks_time10:10:170
1274427994232,6cyclictest1337434-21fschecks_time10:10:170
1274440994132,5cyclictest1299247-21sh08:20:013
1274440994132,5cyclictest1299247-21sh08:20:003
1274440994127,10cyclictest391ktimers/311:40:133
1274436994133,6cyclictest1299272-21sendmail08:20:002
1274436994133,6cyclictest1299272-21sendmail08:20:002
1274436994131,7cyclictest0-21swapper/211:20:002
1274440994032,5cyclictest1336599-21grep10:05:293
1274440994031,5cyclictest1389235-21munin-run12:40:003
1274436993928,7cyclictest0-21swapper/212:05:002
1274432993926,8cyclictest0-21swapper/111:00:001
1274427993927,8cyclictest0-21swapper/011:00:000
1274440993829,6cyclictest1275647-21unixbench_singl07:10:273
1274440993826,8cyclictest1387108-21grep12:30:263
1274440993826,8cyclictest1347002-21tail10:35:273
1274440993728,5cyclictest1307798-21kthreadd08:45:003
1274440993728,5cyclictest1297100-21unixbench_multi08:10:233
1274436993730,5cyclictest1334984-21kworker/u8:3+events_unbound10:06:062
1274436993729,4cyclictest0-21swapper/209:50:002
1274436993728,6cyclictest1388786-21unixbench_multi12:35:262
1274436993727,6cyclictest0-21swapper/211:40:022
1274432993730,3cyclictest1291776-21switchtime07:55:271
1274432993728,5cyclictest0-21swapper/108:20:171
1274440993627,5cyclictest0-21swapper/309:15:193
1274436993628,4cyclictest0-21swapper/207:25:172
1274436993626,4cyclictest0-21swapper/209:31:032
1274427993630,3cyclictest1285412-21sendmail07:40:000
1274427993624,8cyclictest1356198-21idleruntime-cro11:05:000
1274440993526,5cyclictest0-21swapper/310:30:263
1274440993525,6cyclictest1330332-21seq09:50:013
1274440993524,8cyclictest1326792-21sendmail09:40:013
1274440993523,8cyclictest1305673-21grep08:35:253
1274436993528,5cyclictest1373518-21kworker/u8:3+events_unbound11:56:182
1274436993528,4cyclictest0-21swapper/211:15:002
1274436993527,5cyclictest1357906-21munin-run11:10:022
1274436993526,6cyclictest1364899-21unixbench_multi11:25:272
1274436993526,6cyclictest0-21swapper/210:50:012
1274432993528,4cyclictest1333611-21sendmail10:00:001
1274432993525,6cyclictest0-21swapper/110:40:001
1274427993528,5cyclictest1280056-21kworker/u8:0+events_unbound07:25:240
1274427993528,3cyclictest0-21swapper/008:00:010
1274427993527,3cyclictest0-21swapper/008:20:000
1274427993527,3cyclictest0-21swapper/008:20:000
1274440993426,4cyclictest0-21swapper/309:45:003
1274440993425,5cyclictest1361775-21latency_hist11:20:013
1274440993423,7cyclictest0-21swapper/310:30:003
1274440993420,10cyclictest391ktimers/310:40:143
1274436993424,7cyclictest1323148-21cron09:30:002
1274436993424,7cyclictest1323148-21cron09:30:002
1274436993424,6cyclictest0-21swapper/210:10:272
1274436993424,6cyclictest0-21swapper/210:10:272
1274432993426,4cyclictest0-21swapper/110:15:311
1274432993426,4cyclictest0-21swapper/110:15:311
1274432993425,6cyclictest1334906-21unixbench_singl10:00:261
1274432993425,4cyclictest0-21swapper/110:26:081
1274432993424,6cyclictest0-21swapper/112:40:011
1274440993326,5cyclictest1328354-21kworker/u8:2+events_unbound09:52:433
127443699334,5cyclictest131rcu_preempt09:55:132
1274436993323,7cyclictest1321456-21auditctl09:25:002
1274436993323,7cyclictest1321456-21auditctl09:25:002
1274432993325,4cyclictest0-21swapper/108:45:271
1274432993324,5cyclictest0-21swapper/110:15:001
1274432993324,5cyclictest0-21swapper/110:15:001
1274432993323,6cyclictest0-21swapper/110:45:281
1274427993325,4cyclictest0-21swapper/010:51:100
1274427993325,4cyclictest0-21swapper/010:51:100
1274427993325,4cyclictest0-21swapper/009:35:010
1274427993318,12cyclictest121ktimers/007:20:120
127444099325,3cyclictest131rcu_preempt09:00:153
1274440993223,4cyclictest0-21swapper/311:00:193
1274440993220,6cyclictest0-21swapper/311:51:173
1274440993217,10cyclictest1-21systemd08:00:323
127444099321,5cyclictest131rcu_preempt11:25:143
127444099321,5cyclictest131rcu_preempt08:50:133
1274436993224,6cyclictest311ktimers/208:45:162
1274432993225,4cyclictest1292365-21kworker/u8:3+events_unbound08:10:391
1274432993222,6cyclictest0-21swapper/111:35:001
1274432993222,6cyclictest0-21swapper/109:20:001
1274427993224,5cyclictest0-21swapper/008:55:130
1274427993219,9cyclictest121ktimers/009:15:160
1274440993124,5cyclictest1373518-21kworker/u8:3+events_unbound12:01:193
1274440993123,4cyclictest0-21swapper/312:20:283
1274440993122,6cyclictest1278306-21kworker/u8:2+events_unbound07:20:253
1274436993124,4cyclictest0-21swapper/207:30:272
1274436993123,4cyclictest0-21swapper/207:35:262
1274436993122,5cyclictest0-21swapper/212:11:182
1274436993122,5cyclictest0-21swapper/210:55:262
1274432993125,3cyclictest0-21swapper/110:35:001
1274432993123,4cyclictest0-21swapper/111:10:251
1274432993123,3cyclictest0-21swapper/108:40:001
1274432993122,6cyclictest0-21swapper/111:45:251
1274432993122,5cyclictest0-21swapper/112:25:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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