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2026-01-05 - 10:42

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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.
Unexpectedly long latencies may be caused by SMIs
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 rack7slot7s.osadl.org (updated Mon Jan 05, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1487228875,9sleep20-21swapper/219:09:072
1484528875,9sleep00-21swapper/019:08:450
1476528859,9sleep30-21swapper/319:07:433
1362728063,13sleep10-21swapper/119:05:211
1503299291,21cyclictest225-21systemd-journal22:26:240
1504199250,10cyclictest0-21swapper/320:45:123
1503299231,21cyclictest20273-21tr21:35:150
1503299230,22cyclictest0-21swapper/023:05:150
1503299230,22cyclictest0-21swapper/000:30:160
1503299230,22cyclictest0-21swapper/000:30:150
1503299230,21cyclictest0-21swapper/023:30:150
15038992221,0cyclictest0-21swapper/221:05:182
1503599220,21cyclictest0-21swapper/120:50:141
1503299220,21cyclictest21843-21fschecks_count20:30:170
1503899210,1cyclictest27719-21users20:40:282
1503299204,8cyclictest7736-21idleruntime-cro00:30:000
1503299201,16cyclictest29409-21apt-config21:55:000
1503299200,14cyclictest0-21swapper/000:00:160
1504199190,14cyclictest0-21swapper/322:40:163
1503299196,7cyclictest9008-21awk20:05:000
1503299191,17cyclictest19969-21sh19:20:000
1503299191,17cyclictest0-21swapper/022:35:140
1503299191,17cyclictest0-21swapper/022:35:130
1503299191,17cyclictest0-21swapper/022:20:130
1503299190,16cyclictest0-21swapper/021:25:130
1503899183,12cyclictest477-21rs:main2
15035991818,0cyclictest0-21swapper/123:45:131
1503299181,12cyclictest225-21systemd-journal20:41:320
1503299180,17cyclictest0-21swapper/022:05:000
1503899173,3cyclictest15158-21latency_hist21:24:592
1503299179,7cyclictest7851-21chrt21:10:120
1503299170,16cyclictest0-21swapper/021:05:180
1503299170,15cyclictest0-21swapper/021:20:140
1503299170,12cyclictest0-21swapper/020:05:140
1504199165,10cyclictest13895-21apache223:30:213
1503299169,6cyclictest16379-21sed20:20:000
1503299168,7cyclictest22971-21cron23:55:010
1503299168,6cyclictest1629-21tail23:10:230
1503299161,13cyclictest13497-21taskset20:12:040
1503299160,14cyclictest0-21swapper/019:10:160
1503299160,13cyclictest0-21swapper/021:15:140
15041991512,2cyclictest39-21ksoftirqd/320:42:343
1504199150,0cyclictest0-21swapper/300:35:163
1503599156,5cyclictest225-21systemd-journal21:00:001
1503299158,6cyclictest17158-21cut20:20:190
1503299154,8cyclictest13951-21apache219:20:130
1503299151,13cyclictest3046-21kernelversion19:50:240
1503299151,11cyclictest30471-21gltestperf21:55:180
1503299151,11cyclictest0-21swapper/021:40:120
1503299150,15cyclictest0-21swapper/020:55:180
1503299150,14cyclictest0-21swapper/022:30:220
1503299150,12cyclictest0-21swapper/023:35:130
15041991411,2cyclictest18386-21grep23:45:143
15041991411,2cyclictest16957-21sed19:10:263
15041991411,2cyclictest13764-21awk22:30:003
15038991411,2cyclictest22176-21sendmail-msp21:39:592
15035991410,3cyclictest29580-21wc19:39:591
1503299149,3cyclictest25553-21cut21:45:170
1503299149,3cyclictest25441-21chrt19:30:160
1503299148,5cyclictest888-21cut00:15:150
1503299148,5cyclictest8707-21taskset22:16:430
1503299148,5cyclictest5933-21cut23:20:160
1503299148,5cyclictest325-21cut19:45:150
1503299148,5cyclictest24205-21ls19:25:300
1503299148,5cyclictest23246-21taskset23:55:120
1503299148,5cyclictest21634-21sort22:45:160
1503299148,5cyclictest18075-21cat23:45:000
1503299147,6cyclictest4188-21grep00:20:200
1503299147,6cyclictest28978-21expr23:00:150
1503299147,6cyclictest27641-21cat22:55:240
1503299147,6cyclictest24032-21tr22:50:130
1503299143,5cyclictest30496-21perf20:50:000
1503299142,11cyclictest30919-21awk19:40:220
1503299141,11cyclictest19989-21awk23:45:270
1503299140,13cyclictest18052-21cat21:30:160
1503299140,13cyclictest0-21swapper/021:00:190
1503299140,12cyclictest0-21swapper/020:50:130
1503299140,11cyclictest225-21systemd-journal19:36:220
99712130,1chrt9969-21grep21:15:013
1504199139,3cyclictest4326-21wc19:55:003
1504199139,3cyclictest3818-21sed22:05:283
1504199139,3cyclictest14306-21tr22:30:143
1504199139,2cyclictest570-21cron00:15:003
1504199131,7cyclictest15201-21cron23:40:003
15041991310,2cyclictest9980-21head20:05:183
15041991310,2cyclictest6396-21grep00:25:173
15041991310,2cyclictest28907-21sort00:05:173
15041991310,2cyclictest24815-21cat23:55:273
15041991310,2cyclictest23085-21grep22:45:273
15041991310,2cyclictest21218-21sort19:20:213
15041991310,2cyclictest17244-21grep20:20:203
15041991310,2cyclictest1350-21grep22:00:273
15041991310,2cyclictest12953-21fgrep20:10:253
1504199130,12cyclictest18347-21grep19:15:183
1503899139,3cyclictest18419-21grep21:30:172
15038991310,2cyclictest9860-21grep22:20:172
15038991310,2cyclictest5392-21cat00:25:002
15038991310,2cyclictest5159-21grep19:55:192
15038991310,2cyclictest2798-21cron21:00:002
15038991310,2cyclictest26124-21tr00:00:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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