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2025-11-13 - 16:36

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #4

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 rack8slot4s.osadl.org (updated Thu Nov 13, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29492562232173,19sleep40-21swapper/407:09:504
29489972232172,47sleep60-21swapper/607:06:066
29491802227166,20sleep20-21swapper/207:08:442
29492712215181,22sleep50-21swapper/507:09:595
29491902214180,22sleep30-21swapper/307:08:523
29491102210177,21sleep70-21swapper/707:07:457
29490832203168,22sleep00-21swapper/007:07:220
29468212201168,21sleep10-21swapper/107:05:061
2949491993029,1cyclictest3129691-21fwupd12:18:205
294950099269,4cyclictest0-21swapper/707:39:487
294949599260,22cyclictest3043633-21http09:50:116
294950099258,4cyclictest0-21swapper/711:19:287
294950099258,4cyclictest0-21swapper/710:24:327
294950099258,4cyclictest0-21swapper/708:34:437
294950099258,0cyclictest0-21swapper/709:18:397
294950099258,0cyclictest0-21swapper/707:17:497
294950099250,2cyclictest3066335-21sh10:30:007
294949199250,24cyclictest3112711-21awk11:50:005
294949199250,24cyclictest0-21swapper/509:40:115
294948499250,24cyclictest3031760-21sh09:29:592
2949495992423,1cyclictest0-21swapper/612:25:146
2949495992422,1cyclictest3043213-21idleruntime-cro09:50:006
294949599240,0cyclictest0-21swapper/608:40:006
2949491992423,1cyclictest0-21swapper/508:35:005
294948699240,22cyclictest2961969-21apt-get07:30:103
2949479992422,2cyclictest2981591-21sh08:05:011
294947999240,23cyclictest3141550-21run-parts12:40:011
294947799240,23cyclictest0-21swapper/010:20:130
294950099239,14cyclictest0-21swapper/707:50:467
2949500992322,1cyclictest0-21swapper/710:00:007
294950099230,23cyclictest3028932-21basename09:25:007
294950099230,22cyclictest0-21swapper/707:30:117
294949599230,22cyclictest3055329-21apt-get10:10:136
2949491992320,2cyclictest3074836-21dpkg-deb10:42:555
294949199231,21cyclictest2981591-21apt-get08:05:025
294949199230,22cyclictest3101001-21dump-pmu-power11:30:015
294948999230,22cyclictest2999949-21apt-get08:35:144
2949486992320,2cyclictest3129834-21turbostat.cron12:20:003
294948699230,22cyclictest3073721-21ntpq10:40:173
294948699230,22cyclictest2967725-21apt-get07:40:133
294948699230,22cyclictest0-21swapper/311:45:013
2949484992322,1cyclictest0-21swapper/208:25:012
2949484992321,1cyclictest3118835-21apt-get12:00:112
2949484992321,1cyclictest3107406-21apt-get11:40:122
294948499230,2cyclictest3002421-21lockfile-create08:39:592
294948499230,23cyclictest0-21swapper/208:50:012
294948499230,23cyclictest0-21swapper/208:20:012
294948499230,22cyclictest0-21swapper/210:40:112
294948499230,22cyclictest0-21swapper/208:10:122
294948499230,1cyclictest3005939-21apt-get08:45:152
2949479992323,0cyclictest0-21swapper/110:15:151
294947999230,22cyclictest3037469-21sh09:40:001
2949477992323,0cyclictest0-21swapper/010:05:150
2949477992321,1cyclictest3029336-21apt-get09:25:140
294947799230,22cyclictest2987568-21munin-run08:15:000
2949500992221,1cyclictest0-21swapper/711:30:117
294950099220,21cyclictest3139107-21apt-get12:35:147
294950099220,21cyclictest3074835-21dpkg-deb10:42:557
294950099220,21cyclictest0-21swapper/711:55:147
294950099220,21cyclictest0-21swapper/710:10:027
294950099220,21cyclictest0-21swapper/710:05:007
294950099220,1cyclictest3089938-21apt-get11:10:137
294950099220,0cyclictest0-21swapper/709:40:007
2949495992221,1cyclictest0-21swapper/609:55:126
2949495992220,2cyclictest0-21swapper/612:15:136
2949495992220,1cyclictest0-21swapper/612:10:136
2949495992220,1cyclictest0-21swapper/608:55:126
2949495992220,1cyclictest0-21swapper/608:29:596
294949599220,22cyclictest0-21swapper/611:05:016
294949599220,22cyclictest0-21swapper/611:05:016
294949599220,21cyclictest3074838-21dpkg-deb10:42:556
294949599220,21cyclictest0-21swapper/610:15:166
294949599220,21cyclictest0-21swapper/607:20:136
2949491992222,0cyclictest0-21swapper/511:35:125
2949491992221,1cyclictest0-21swapper/508:10:135
2949491992221,0cyclictest3124540-21apt-get12:10:135
2949491992221,0cyclictest0-21swapper/509:00:145
294949199220,21cyclictest3087044-21apt-get11:05:145
294949199220,21cyclictest0-21swapper/511:50:125
294949199220,21cyclictest0-21swapper/511:00:145
294949199220,21cyclictest0-21swapper/511:00:145
294949199220,21cyclictest0-21swapper/510:15:165
294949199220,21cyclictest0-21swapper/508:55:135
294949199220,1cyclictest3135562-21apt-get12:30:025
2949489992221,1cyclictest0-21swapper/410:55:014
2949489992221,1cyclictest0-21swapper/408:49:594
294948999220,21cyclictest3035050-21apt-get09:35:144
294948999220,21cyclictest0-21swapper/412:00:134
294948999220,21cyclictest0-21swapper/409:50:124
294948999220,1cyclictest0-21swapper/411:40:014
294948999220,1cyclictest0-21swapper/411:10:144
2949486992221,1cyclictest2973441-21apt-get07:50:133
2949486992221,1cyclictest0-21swapper/309:20:133
2949486992220,1cyclictest3083697-21turbostat11:00:013
2949486992220,1cyclictest3083697-21turbostat11:00:003
2949486992220,1cyclictest3014350-21turbostat08:59:593
294948699220,21cyclictest0-21swapper/312:30:033
294948699220,21cyclictest0-21swapper/310:50:133
294948699220,21cyclictest0-21swapper/310:15:153
294948699220,21cyclictest0-21swapper/307:25:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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