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2026-05-09 - 06:08

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 Sat May 09, 2026 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
66788995237,11cyclictest311ktimers/222:05:122
66784995037,9cyclictest231ktimers/100:20:111
66784994936,10cyclictest231ktimers/121:00:131
66793994739,5cyclictest160648-21unixbench_singl23:35:223
66793994739,5cyclictest160648-21unixbench_singl23:35:223
66793994738,6cyclictest156449-21cut23:25:153
6677999470,44cyclictest115557-21latency_hist21:30:000
66788994633,9cyclictest62661-21kworker/u8:3-ext4-rsv-conversion19:20:012
66779994625,17cyclictest0-21swapper/000:34:590
66788994534,7cyclictest0-21swapper/221:00:012
6677999453,10cyclictest155742-21sshd23:22:140
66779994519,22cyclictest0-21swapper/021:05:010
66784994435,6cyclictest122953-21munin-plugin-st21:50:001
6677999431,11cyclictest92487-21unixbench_singl20:20:270
6677999431,10cyclictest151755-21/usr/sbin/munin23:10:240
66784994233,4cyclictest0-21swapper/119:57:181
6677999422,3cyclictest0-21swapper/021:05:110
6677999421,9cyclictest172160-21/usr/sbin/munin00:10:210
6677999421,6cyclictest85552-21timerwakeupswit20:00:240
66788994133,4cyclictest156450-21runrttasks23:25:152
6677999411,9cyclictest180738-21/usr/sbin/munin00:35:190
6677999411,9cyclictest170146-21/usr/sbin/munin00:05:160
6677999411,9cyclictest149463-21/usr/sbin/munin23:05:160
6677999411,8cyclictest168781-21/usr/sbin/munin00:00:220
6677999411,7cyclictest161443-21/usr/sbin/munin23:40:140
6677999411,5cyclictest166787-21/usr/sbin/munin23:55:170
6677999411,10cyclictest86444-21/usr/sbin/munin20:05:150
6677999411,10cyclictest160621-21sed23:35:230
6677999411,10cyclictest160621-21sed23:35:220
66793994032,4cyclictest70745-21sendmail19:20:003
66788994034,4cyclictest115448-21kworker/u8:1+events_unbound21:37:332
66784994032,5cyclictest121195-21latency_hist21:45:011
6677999403,5cyclictest102225-21ntp_states20:50:210
6677999403,4cyclictest163036-21apt-get23:45:120
6677999402,6cyclictest99259-21grep20:40:250
6677999402,6cyclictest121595-21df_inode21:45:140
66779994019,19cyclictest0-21swapper/022:50:130
6677999401,8cyclictest177194-21/usr/sbin/munin00:25:150
6677999401,7cyclictest175957-21/usr/sbin/munin00:20:240
6677999401,6cyclictest173916-21meminfo00:15:190
6677999401,5cyclictest13550irq/42-30be0000.ethernet21:40:120
6677999401,5cyclictest131192-21/usr/sbin/munin22:10:240
66793993932,4cyclictest110240-21apt-config21:15:013
66793993931,5cyclictest94155-21unixbench_multi20:25:253
66793993931,5cyclictest94155-21unixbench_multi20:25:253
66793993926,10cyclictest391ktimers/321:15:133
6677999393,7cyclictest111863-21sshd21:17:300
6677999392,4cyclictest133839-21apt-get22:20:110
6677999392,12cyclictest68405-21cron19:15:010
6677999392,12cyclictest68405-21cron19:15:010
6677999391,9cyclictest77302-21sshd19:37:140
6677999391,9cyclictest108970-21/usr/sbin/munin21:10:160
6677999391,8cyclictest69622-21/usr/sbin/munin19:15:160
6677999391,8cyclictest143183-21sed22:45:230
6677999391,7cyclictest137376-21/usr/sbin/munin22:30:160
6677999391,6cyclictest89823-21df_inode20:15:130
6677999391,6cyclictest72668-21/usr/sbin/munin19:25:250
6677999391,5cyclictest95283-21meminfo20:30:180
6677999391,3cyclictest126717-21wc22:00:010
66779993912,24cyclictest154104-21latency_hist23:20:010
66784993831,4cyclictest119128-21idleruntime-cro21:40:011
6677999383,3cyclictest147593-21df23:00:140
6677999382,4cyclictest156214-21/usr/sbin/munin23:25:100
6677999381,9cyclictest88388-21/usr/sbin/munin20:10:170
6677999381,9cyclictest146741-21unixbench_multi22:55:250
6677999381,7cyclictest82985-21awk19:55:140
6677999381,7cyclictest137025-21idleruntime-cro22:30:010
6677999381,5cyclictest140581-21sed22:40:010
6677999381,3cyclictest118714-21/usr/sbin/munin21:35:250
6677999381,11cyclictest103472-21df_inode20:55:140
6677999381,10cyclictest165114-21grep23:50:190
66793993727,7cyclictest86083-21idleruntime-cro20:05:013
66784993727,6cyclictest0-21swapper/100:35:161
6677999379,25cyclictest127050-21/usr/sbin/munin22:00:170
6677999371,9cyclictest123952-21ntp_states21:50:190
6677999371,9cyclictest123952-21ntp_states21:50:190
6677999371,8cyclictest74611-21/usr/sbin/munin19:30:170
6677999371,4cyclictest79019-21sshd19:42:130
6677999371,4cyclictest71061-21cstates19:20:130
6677999371,4cyclictest116065-21irqstats21:30:170
6677999371,3cyclictest99952-21/usr/sbin/munin20:45:110
6677999371,3cyclictest141411-21/usr/sbin/munin22:40:210
6677999371,3cyclictest141411-21/usr/sbin/munin22:40:200
6677999371,10cyclictest157916-21apt-get23:30:130
66779993710,23cyclictest0-21swapper/020:35:230
6677999370,9cyclictest93136-21apt-get20:25:110
6677999370,9cyclictest93136-21apt-get20:25:110
66793993627,6cyclictest391ktimers/323:30:123
66793993627,4cyclictest0-21swapper/322:25:153
66793993625,7cyclictest146809-21grep22:55:253
66793993624,8cyclictest0-21swapper/320:00:013
66788993625,7cyclictest75852-21grep19:35:002
66788993625,6cyclictest0-21swapper/220:00:252
6677999362,9cyclictest112323-21/usr/sbin/munin21:20:090
6677999361,9cyclictest80060-21ntp_states19:45:210
6677999361,6cyclictest81359-21fschecks_count19:50:160
6677999361,3cyclictest128630-21diskstats22:05:150
66793993527,4cyclictest0-21swapper/319:45:163
66788993527,5cyclictest112542-21fschecks_time21:20:142
66788993527,4cyclictest110156-21sh21:15:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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