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2025-12-01 - 08:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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  Intel
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Mon Dec 01, 2025 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2437991090,6rtkit-daemon0-21swapper/322:30:563
211672970,7sleep121168-21ls21:31:051
815999915,78cyclictest0-21swapper/021:05:440
815999907,76cyclictest25963-21awk22:50:400
815999907,76cyclictest25963-21awk22:50:400
815999883,78cyclictest0-21swapper/023:50:580
8164998636,10cyclictest13669-21grep20:06:221
815999857,70cyclictest0-21swapper/019:02:490
815999856,71cyclictest0-21swapper/019:16:020
815999856,71cyclictest0-21swapper/019:16:020
815999826,68cyclictest0-21swapper/020:31:070
815999824,60cyclictest0-21swapper/020:51:180
815999806,51cyclictest0-21swapper/019:41:220
8159998034,39cyclictest17682-21crond19:10:490
815999802,72cyclictest0-21swapper/023:10:350
8159998018,45cyclictest261881munin-node22:51:100
8159998018,43cyclictest17848-21munin-node21:26:020
8159998018,43cyclictest17848-21munin-node21:26:020
815999795,67cyclictest0-21swapper/020:08:000
815999794,55cyclictest0-21swapper/019:36:010
815999783,67cyclictest11597-21sshd21:11:060
815999783,57cyclictest0-21swapper/020:43:070
815999783,57cyclictest0-21swapper/020:43:070
816499779,23cyclictest0-21swapper/120:30:461
8159997733,38cyclictest30486-21tune2fs21:51:000
815999773,67cyclictest0-21swapper/023:59:350
815999773,66cyclictest0-21swapper/019:53:080
8159997715,43cyclictest0-21swapper/021:55:560
815999766,51cyclictest0-21swapper/020:21:190
815999765,63cyclictest0-21swapper/023:39:030
8159997634,36cyclictest13791-21cut21:16:030
8159997630,40cyclictest1369-21runrttasks23:32:570
8159997630,40cyclictest1369-21runrttasks23:32:570
815999763,65cyclictest8384-21munin-node18:51:110
815999763,65cyclictest25702-21taskset00:00:490
815999754,64cyclictest0-21swapper/020:01:220
815999753,65cyclictest7297-21tail19:56:010
815999753,65cyclictest7297-21tail19:56:010
815999753,64cyclictest0-21swapper/022:10:560
8159997528,39cyclictest25904-21gltestperf19:26:070
8159997527,41cyclictest27857-21df21:45:590
815999752,64cyclictest16621-21munin-node22:31:070
815999746,61cyclictest0-21swapper/019:15:490
815999744,63cyclictest0-21swapper/021:40:550
815999743,64cyclictest223652chrt21:35:310
8159997427,40cyclictest22292-21grep20:26:070
815999737,59cyclictest0-21swapper/020:16:080
815999733,62cyclictest15432-21missed_timers20:11:120
815999733,56cyclictest28777-21open_inodes19:31:190
8159997326,41cyclictest1369-21runrttasks22:30:090
8159997322,44cyclictest5011-21grep22:05:580
8159997322,44cyclictest5011-21grep22:05:580
815999726,59cyclictest0-21swapper/023:45:390
815999724,61cyclictest0-21swapper/000:16:080
815999724,61cyclictest0-21swapper/000:16:080
815999723,54cyclictest0-21swapper/021:38:250
815999723,39cyclictest0-21swapper/022:38:340
8159997224,42cyclictest27647-21gzip20:36:170
815999713,53cyclictest0-21swapper/022:20:540
8159997126,39cyclictest9136-21tail21:06:050
8159997126,39cyclictest1369-21runrttasks19:47:540
8159997123,41cyclictest4240-21tune2fs20:56:040
8159997119,46cyclictest1369-21runrttasks23:29:070
8159997030,34cyclictest9915-21unixbench_multi23:21:120
815999697,51cyclictest0-21swapper/020:46:010
815999693,60cyclictest5598-21latency_hist23:15:400
815999693,60cyclictest0-21swapper/022:17:000
815999693,51cyclictest8141-21latency_hist18:50:510
8159996923,40cyclictest1369-21runrttasks00:09:170
815999692,60cyclictest30347-21munin-node00:11:150
8159996913,50cyclictest1369-21runrttasks23:19:030
815999686,48cyclictest0-21swapper/023:00:520
815999683,51cyclictest30018-21python22:56:120
8159996820,41cyclictest1369-21runrttasks22:42:560
815999676,55cyclictest0-21swapper/018:57:030
815999673,52cyclictest22695-21munin-node19:21:120
815999673,46cyclictest20567-21latency_hist23:50:390
816699664,42cyclictest0-21swapper/222:35:402
815999663,57cyclictest0-21swapper/021:21:240
815999663,57cyclictest0-21swapper/021:21:240
815999663,56cyclictest2383-21telnet22:00:540
243799650,5rtkit-daemon21644-21gzip21:31:133
294332640,4sleep329430-21grep20:41:053
294332640,4sleep329430-21grep20:41:053
243799640,6rtkit-daemon0-21swapper/222:29:413
243799640,4rtkit-daemon2436-21rtkit-daemon18:56:261
8167996312,33cyclictest0-21swapper/320:46:103
8167996210,44cyclictest20795-21df_abs19:16:053
8167996210,44cyclictest20795-21df_abs19:16:053
243799620,6rtkit-daemon0-21swapper/223:20:393
816799618,46cyclictest0-21swapper/319:01:123
816799608,45cyclictest0-21swapper/322:00:433
816799608,36cyclictest0-21swapper/323:31:573
816799608,36cyclictest0-21swapper/323:31:573
816799607,40cyclictest0-21swapper/319:45:273
816799605,49cyclictest0-21swapper/321:40:443
8167996021,32cyclictest31599-21unixbench_singl19:36:213
243799600,5rtkit-daemon0-21swapper/223:55:223
816699594,12cyclictest0-21swapper/223:21:082
816699593,49cyclictest9179-21grep21:06:052
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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