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2026-01-03 - 04:42

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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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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 rackeslot5s.osadl.org (updated Sat Jan 03, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3068599240,23cyclictest0-21swapper/319:56:023
30680992422,1cyclictest23947-21dump-pmu-power21:10:002
30676992421,1cyclictest0-21swapper/123:21:021
3067699240,2cyclictest313-21systemd-journal23:20:011
3067699240,23cyclictest20224-21apt-get19:56:021
30685992322,0cyclictest0-21swapper/321:41:003
30685992320,2cyclictest19157-21basename21:00:013
30685992316,6cyclictest20513-21idleruntime-cro00:20:003
3068599230,23cyclictest0-21swapper/319:26:003
30680992322,0cyclictest7851-21munin-run19:30:002
3067699230,22cyclictest23271-21apt-get00:26:011
3067699230,22cyclictest16389-21apt-get23:06:021
3067699230,0cyclictest0-21swapper/122:51:011
30671992323,0cyclictest0-21swapper/021:40:020
30671992321,1cyclictest0-21swapper/022:25:020
3067199230,22cyclictest3980-21sh22:40:010
30685992222,0cyclictest3385-21apt-get19:21:013
30685992220,1cyclictest18782-21apt23:11:023
30685992220,1cyclictest13347-21perf00:05:013
3068599220,21cyclictest9130-21apt-get22:51:013
3068599220,21cyclictest29888-21apt-get21:21:013
3068599220,21cyclictest26753-21latency_hist21:15:003
3068599220,21cyclictest0-21swapper/322:11:003
3068599220,1cyclictest29172-21apt-get23:31:013
30680992220,1cyclictest31612-21munin-run22:30:012
30680992220,1cyclictest26743-21apt-get22:21:012
30680992220,1cyclictest10855-21grep00:00:012
3068099221,0cyclictest18783-21apt-get23:11:012
3068099220,21cyclictest26748-21perf21:15:002
3068099220,21cyclictest25332-21turbostat00:30:002
3068099220,21cyclictest13592-21turbostat23:00:002
3068099220,21cyclictest0-21swapper/223:51:012
3068099220,21cyclictest0-21swapper/223:50:002
3068099220,21cyclictest0-21swapper/223:16:012
3068099220,21cyclictest0-21swapper/200:06:022
3068099220,1cyclictest2232-21apt-get20:25:592
30676992221,0cyclictest28813-21apt-get22:25:021
30676992220,1cyclictest23929-21sh21:10:001
3067699220,21cyclictest9093-21apt-get20:40:021
3067699220,21cyclictest30980-21apt-get19:10:591
3067699220,21cyclictest0-21swapper/121:05:001
3067699220,21cyclictest0-21swapper/119:36:021
3067699220,1cyclictest6375-21apt-get23:51:011
3067699220,1cyclictest28840-21grep23:30:001
3067699220,0cyclictest0-21swapper/121:25:591
30671992221,0cyclictest11525-21apt-get22:56:000
30671992221,0cyclictest0-21swapper/023:56:030
3067199220,1cyclictest25035-21apt-get20:06:010
3067199220,1cyclictest1953-21perf21:30:010
3067199220,1cyclictest0-21swapper/020:20:000
30685992119,1cyclictest16815-21awk22:00:003
3068599210,20cyclictest20880-21apt-get00:21:013
3068599210,20cyclictest0-21swapper/323:06:033
3068599210,1cyclictest0-21swapper/300:40:013
30680992121,0cyclictest0-21swapper/221:36:002
30680992120,0cyclictest19534-21apt-get22:06:022
30680992118,2cyclictest18102-21cron00:15:012
3068099210,20cyclictest0-21swapper/221:41:002
3068099210,20cyclictest0-21swapper/221:31:012
3068099210,0cyclictest0-21swapper/222:31:002
3068099210,0cyclictest0-21swapper/219:10:592
3068099210,0cyclictest0-21swapper/200:01:022
30676992121,0cyclictest8773-21apt-get23:56:031
30676992121,0cyclictest0-21swapper/121:40:021
30676992121,0cyclictest0-21swapper/120:25:591
30676992120,1cyclictest22644-21apt-get20:01:031
30676992119,1cyclictest0-21swapper/122:05:001
3067699210,21cyclictest15379-21apt-get19:46:011
3067699210,20cyclictest17828-21apt-get19:51:011
3067699210,1cyclictest1598-21munin-run22:35:011
3067699210,0cyclictest28058-21apt-get00:36:011
3067699210,0cyclictest0-21swapper/122:56:001
3067699210,0cyclictest0-21swapper/122:46:001
3067699210,0cyclictest0-21swapper/120:21:031
30671992121,0cyclictest0-21swapper/020:01:030
30671992121,0cyclictest0-21swapper/000:21:010
30671992121,0cyclictest0-21swapper/000:11:000
30671992120,0cyclictest0-21swapper/023:16:010
3067199210,2cyclictest17042-21/usr/sbin/munin20:56:070
3067199210,21cyclictest0-21swapper/022:51:010
3067199210,20cyclictest31933-21apt-get22:31:000
3067199210,20cyclictest0-21swapper/022:06:020
3067199210,20cyclictest0-21swapper/019:31:030
3067199210,0cyclictest0-21swapper/023:01:020
30685992020,0cyclictest6734-21apt-get22:46:013
30685992020,0cyclictest27073-21apt-get21:16:003
30685992020,0cyclictest2279-21apt-get21:31:013
30685992020,0cyclictest0-21swapper/322:06:023
30685992020,0cyclictest0-21swapper/320:41:013
30685992020,0cyclictest0-21swapper/320:06:013
30685992020,0cyclictest0-21swapper/319:31:033
30685992019,1cyclictest16068-21apt-get00:11:003
30685992019,0cyclictest12985-21apt-get19:41:003
30685992019,0cyclictest0-21swapper/323:41:003
30685992019,0cyclictest0-21swapper/322:56:003
30685992018,1cyclictest23990-21apt-get23:21:023
30685992017,2cyclictest4008-21apt22:40:013
3068599200,3cyclictest0-21swapper/319:10:593
3068599200,1cyclictest31574-21apt-get23:36:013
3068599200,0cyclictest4630-21apt-get20:31:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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