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2026-04-24 - 01:20

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 Thu Apr 23, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
724224996947,6cyclictest733710-21kworker/u8:4+events_unbound07:35:192
724229995340,8cyclictest760737-21grep08:50:243
724220995240,8cyclictest813421-21apt-key11:25:011
724220995041,5cyclictest751419-21fschecks_time08:25:161
724215995022,25cyclictest749261-21munin-run08:20:000
72421599501,3cyclictest775074-21apt-get09:35:110
724220994734,9cyclictest804468-21idleruntime-cro11:00:001
724224994640,4cyclictest486446-21kworker/u8:2+events_unbound07:15:152
724224994640,4cyclictest486446-21kworker/u8:2+events_unbound07:15:152
724224994632,10cyclictest311ktimers/212:15:142
724215994622,20cyclictest0-21swapper/007:50:150
724215994619,23cyclictest0-21swapper/009:00:010
724215994516,25cyclictest811493-21auditctl11:20:000
72421599451,5cyclictest780531-21irqstats09:50:180
72421599451,4cyclictest820688-21apt-get11:45:120
724224994436,4cyclictest790411-21sendmail10:19:592
72421599441,7cyclictest839397-21date12:40:000
72421599441,5cyclictest764844-21apt-get09:05:130
72421599441,5cyclictest745838-21latency_hist08:10:010
724229994335,5cyclictest813222-21munin-plugin-st11:25:003
72421599431,10cyclictest773373-21/usr/sbin/munin09:30:110
724229994232,7cyclictest792123-21munin-plugin-st10:25:003
724220994230,8cyclictest0-21swapper/112:20:001
72421599422,32cyclictest726127-21grep07:15:010
724215994223,16cyclictest13550irq/42-30be0000.ethernet09:20:140
72421599421,8cyclictest835020-21/usr/sbin/munin12:25:240
72421599421,6cyclictest760063-21irqstats08:50:170
72421599421,4cyclictest757403-21users08:40:260
72421599421,3cyclictest0-21swapper/011:40:110
72421599421,38cyclictest728894-21/usr/sbin/munin07:20:190
72421599421,37cyclictest805743-21head11:00:250
72421599421,2cyclictest0-21swapper/012:20:000
72421599413,3cyclictest776795-21apt-get09:40:130
72421599412,36cyclictest833402-21/usr/sbin/munin12:20:220
72421599411,9cyclictest813653-21apt-get11:25:120
724215994117,21cyclictest804466-21sendmail11:00:000
724215994116,23cyclictest0-21swapper/007:25:250
72421599411,5cyclictest742449-21latency_hist08:00:010
72421599411,3cyclictest0-21swapper/010:30:210
72421599411,3cyclictest0-21swapper/009:25:180
72421599411,3cyclictest0-21swapper/009:25:180
724215994113,25cyclictest0-21swapper/010:25:000
72421599411,11cyclictest785649-21/usr/sbin/munin10:05:160
72421599411,10cyclictest732047-21sshd07:30:180
724229994033,5cyclictest776388-21kworker/u8:2+events_unbound10:16:013
724229994032,4cyclictest0-21swapper/307:20:153
724220994029,7cyclictest827671-21fschecks_count12:05:141
724220994029,7cyclictest827671-21fschecks_count12:05:141
724220994027,9cyclictest231ktimers/109:30:141
72421599403,5cyclictest783189-21cron09:58:010
72421599402,34cyclictest769715-21cron09:20:000
72421599401,9cyclictest825961-21tune2fs12:00:150
72421599401,9cyclictest778494-21/usr/sbin/munin09:45:120
72421599401,7cyclictest828071-21ntp_states12:05:210
72421599401,7cyclictest828071-21ntp_states12:05:200
72421599401,3cyclictest736928-21basename07:45:010
72421599401,3cyclictest0-21swapper/008:30:130
72421599400,11cyclictest808109-21apt-get11:10:110
724229993931,4cyclictest733289-21munin-plugin-st07:35:013
724229993921,10cyclictest131rcu_preempt07:10:253
724224993930,6cyclictest818335-21unixbench_singl11:35:252
724220993930,5cyclictest728151-21cron07:20:011
724220993930,5cyclictest728151-21cron07:20:001
72421599392,31cyclictest824113-21cpu11:55:130
72421599391,3cyclictest0-21swapper/011:35:110
72421599391,3cyclictest0-21swapper/010:45:010
72421599391,3cyclictest0-21swapper/008:10:120
72421599391,3cyclictest0-21swapper/007:45:090
72421599391,33cyclictest783914-21cat10:00:160
72421599391,12cyclictest742472-21apt-get08:00:120
72421599391,10cyclictest728170-21tr07:20:010
72421599391,10cyclictest728170-21tr07:20:000
72421599390,3cyclictest0-21swapper/009:10:090
724224993831,4cyclictest816836-21munin-plugin-st11:35:002
724220993831,4cyclictest762912-21idleruntime-cro09:00:011
72421599383,3cyclictest836354-21/usr/sbin/munin12:30:170
72421599383,31cyclictest830225-21grep12:10:230
72421599381,9cyclictest756067-21cron08:40:010
72421599381,7cyclictest751836-21processes08:25:220
72421599381,6cyclictest750672-21sshd08:21:240
72421599381,4cyclictest801849-21ntp_states10:50:200
72421599381,4cyclictest801849-21ntp_states10:50:190
72421599381,4cyclictest800153-21ntp_states10:45:230
72421599381,4cyclictest800153-21ntp_states10:45:230
72421599381,3cyclictest812504-21/usr/sbin/munin11:20:230
72421599381,34cyclictest815690-21irqstats11:30:170
72421599381,32cyclictest788008-21grep10:10:240
72421599381,11cyclictest822725-21irqstats11:50:160
72421599381,10cyclictest789255-21/usr/sbin/munin10:15:180
72421599381,10cyclictest763149-21/usr/sbin/munin09:00:130
72421599381,10cyclictest758631-21/usr/sbin/munin08:45:220
724224993729,4cyclictest828568-21unixbench_singl12:05:252
724224993729,4cyclictest828568-21unixbench_singl12:05:252
724220993730,4cyclictest766317-21sh09:10:001
724220993729,4cyclictest0-21swapper/108:15:001
724220993728,6cyclictest790387-21cron10:20:001
72421599371,4cyclictest806465-21/usr/sbin/munin11:05:140
72421599371,4cyclictest792556-21apt-get10:25:120
72421599371,3cyclictest733836-21df_inode07:35:150
724229993627,4cyclictest0-21swapper/311:54:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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