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2026-03-25 - 02:37

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 Tue Mar 24, 2026 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
586975995344,6cyclictest662107-21cron10:45:013
586975995224,24cyclictest630763-21cron09:15:003
586975994927,19cyclictest0-21swapper/309:05:253
586966994940,5cyclictest694714-21munin-plugin-st12:20:001
586975994840,5cyclictest687877-21sh12:00:013
586975994829,15cyclictest0-21swapper/311:10:283
586975994829,15cyclictest0-21swapper/311:10:283
586966994632,11cyclictest231ktimers/110:20:121
586975994517,24cyclictest0-21swapper/309:40:003
58697599450,10cyclictest623965-21apt-get08:55:143
58697599450,10cyclictest623965-21apt-get08:55:143
58697599432,36cyclictest693228-21sshd12:15:103
58697599432,35cyclictest204-21dbus-daemon11:20:003
58697599431,7cyclictest596123-21latency_hist07:35:013
58696699438,11cyclictest644732-21latency_hist09:55:001
586961994337,4cyclictest618535-21kworker/u8:1+events_unbound09:04:350
58697599423,35cyclictest641216-21cron09:45:013
58697599421,9cyclictest696656-21/usr/sbin/munin12:25:283
58697599421,3cyclictest0-21swapper/309:45:123
58697599420,10cyclictest632723-21apt-get09:20:143
586975994125,13cyclictest391ktimers/312:00:123
58697599412,35cyclictest637322-21grep09:30:243
586975994120,17cyclictest0-21swapper/308:15:283
58697599411,8cyclictest681369-21/usr/sbin/munin11:40:113
58697599411,8cyclictest658024-21/usr/sbin/munin10:30:243
58697599411,8cyclictest652238-21/usr/sbin/munin10:15:203
58697599411,8cyclictest608749-21/usr/sbin/munin08:10:193
58697599411,5cyclictest592957-21df07:25:143
586975994114,24cyclictest589423-21/usr/sbin/munin07:15:263
58697599411,33cyclictest684706-21sshd11:50:073
58697599411,10cyclictest604903-21df08:00:153
586966994134,4cyclictest684487-21munin-plugin-st11:50:011
58697599409,27cyclictest612028-21cut08:20:153
58697599402,34cyclictest651198-21grep10:10:253
58697599402,34cyclictest204-21dbus-daemon11:30:023
58697599402,32cyclictest662533-21fschecks_time10:45:203
58697599401,9cyclictest615438-21apt-get08:30:113
58697599401,8cyclictest659598-21/usr/sbin/munin10:35:243
58697599401,7cyclictest668234-21/usr/sbin/munin11:00:243
58697599401,4cyclictest691943-21cat12:10:193
58697599401,4cyclictest6183952chrt08:37:333
58697599401,36cyclictest700235-21fschecks_time12:35:153
58697599401,10cyclictest618966-21df08:40:143
58697599400,4cyclictest677112-21/usr/sbin/munin11:25:273
586970994034,3cyclictest699824-21kthreadd12:34:592
586966994026,10cyclictest231ktimers/111:15:131
586966994025,11cyclictest231ktimers/110:50:141
586961994031,6cyclictest121ktimers/009:35:130
586975993931,5cyclictest646329-21munin-plugin-st10:00:013
58697599392,33cyclictest683228-21grep11:45:153
58697599392,33cyclictest598506-21grep07:40:203
58697599392,32cyclictest623723-21cron08:54:593
58697599391,9cyclictest601456-21/usr/sbin/munin07:50:133
58697599391,7cyclictest680364-21/usr/sbin/munin11:35:253
58697599391,7cyclictest613650-21diskstats08:25:173
58697599391,5cyclictest653911-21/usr/sbin/munin10:20:153
58697599391,3cyclictest0-21swapper/310:05:113
58697599391,11cyclictest597329-21users07:35:253
58697599391,10cyclictest587228-21df07:10:143
58697599390,6cyclictest694958-21apt-get12:20:133
586966993928,6cyclictest0-21swapper/112:15:001
586961993933,4cyclictest601128-21kworker/u8:0+events_unbound07:56:420
586961993932,4cyclictest698572-21fschecks_time12:30:160
586961993924,5cyclictest601128-21kworker/u8:0+events_unbound08:18:400
586961993921,12cyclictest131rcu_preempt10:34:040
586961993918,5cyclictest0-21swapper/010:25:220
58697599383,12cyclictest647078-21sed10:00:193
586975993827,7cyclictest0-21swapper/312:30:163
58697599382,32cyclictest606919-21grep08:05:173
58697599381,9cyclictest670198-21unixbench_singl11:05:273
58697599381,9cyclictest600681-21unixbench_multi07:45:253
58697599381,6cyclictest665851-21df10:55:143
58697599381,5cyclictest591503-21sed07:20:173
58697599381,4cyclictest664636-21/usr/sbin/munin10:50:223
58697599381,32cyclictest626537-21wc09:00:263
58697599381,10cyclictest603523-21meminfo07:55:203
58697099381,15cyclictest0-21swapper/207:50:132
586966993831,4cyclictest651663-21munin-plugin-st10:15:001
586961993830,5cyclictest596030-21munin-plugin-st07:35:010
586961993820,10cyclictest131rcu_preempt11:55:140
58697599372,31cyclictest634821-21cut09:25:173
58697599372,31cyclictest634821-21cut09:25:173
58697599371,7cyclictest655820-21if_eth010:25:173
58697599371,6cyclictest643293-21fschecks_count09:50:163
58697599371,3cyclictest620562-21apt-get08:45:113
58697599371,32cyclictest674233-21cron11:20:003
58697599371,10cyclictest631206-21fschecks_time09:15:153
586970993720,6cyclictest656834-21kworker/u8:2+events_unbound10:30:232
586966993730,4cyclictest642927-21sh09:50:011
586966993729,5cyclictest0-21swapper/112:00:011
586966993714,6cyclictest633776-21sed09:20:261
586961993715,9cyclictest131rcu_preempt07:17:370
58697599361,31cyclictest689973-21fschecks_count12:05:153
586970993627,4cyclictest0-21swapper/208:30:222
586966993629,4cyclictest682771-21cron11:45:001
586966993628,4cyclictest625456-21sendmail09:00:001
586966993628,4cyclictest625456-21sendmail09:00:001
586966993627,6cyclictest678933-21unixbench_singl11:30:261
586966993625,7cyclictest0-21swapper/110:35:261
586961993628,4cyclictest0-21swapper/012:25:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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