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2026-07-12 - 02:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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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  Intel
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: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Sun Jul 12, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
63423521620,3sleep3451irq_work/319:15:193
7852262770,5sleep00-21swapper/021:45:240
8144692680,3chrt281rcuc/122:15:111
623209996057,2cyclictest693487-21kworker/u8:2+events_unbound21:50:261
623209995045,4cyclictest627723-21kworker/u8:1+events_unbound19:15:261
623214994941,6cyclictest1704890-21systemd-journal23:55:012
623209994736,8cyclictest680665-21apt-get20:05:011
623207994735,4cyclictest627723-21kworker/u8:1+flush-8:020:30:210
623209994541,3cyclictest749960-21kworker/u8:1+flush-8:022:55:231
623209994540,4cyclictest881323-21kworker/u8:3+flush-8:000:25:221
623209994439,4cyclictest881323-21kworker/u8:3+events_unbound23:25:201
623207994438,4cyclictest679571-21kworker/u8:0+events_unbound20:10:070
623207994430,12cyclictest710577-21kworker/u8:3+flush-8:020:55:190
623209994340,2cyclictest693487-21kworker/u8:2+flush-8:020:40:171
623209994338,4cyclictest820948-21kworker/u8:3+events_unbound22:30:231
623207994337,4cyclictest608777-21kworker/u8:2+flush-8:019:10:210
623209994238,3cyclictest693487-21kworker/u8:2+flush-8:020:45:211
623209994238,3cyclictest693487-21kworker/u8:2+flush-8:020:45:201
623209994238,3cyclictest3975468-21kworker/u8:3+flush-8:020:05:091
623209994237,4cyclictest649927-21kworker/u8:0+events_unbound19:35:371
623209994234,6cyclictest1704890-21systemd-journal20:14:591
623209994233,7cyclictest665188-21apt-get19:46:251
623207994236,4cyclictest881323-21kworker/u8:3+flush-8:000:05:270
623207994236,4cyclictest791411-21kworker/u8:0+flush-8:022:10:110
62130224211,2sleep10-21swapper/119:05:131
623214994135,4cyclictest945215-21kworker/u8:0+flush-8:000:30:132
623209994137,3cyclictest815580-21kworker/u8:2+flush-8:022:50:101
623207994135,5cyclictest881323-21kworker/u8:3+flush-8:000:25:180
623207994135,5cyclictest749960-21kworker/u8:1+events_unbound22:45:210
623207994129,10cyclictest915582-21kworker/u8:2+flush-8:000:15:160
623209994036,3cyclictest945215-21kworker/u8:0+flush-8:000:35:061
623209994036,3cyclictest856721-21kworker/u8:0+flush-8:023:20:241
623209994036,3cyclictest749960-21kworker/u8:1+events_unbound21:20:081
623209994036,3cyclictest749960-21kworker/u8:1+events_unbound21:15:211
623209994036,3cyclictest627723-21kworker/u8:1+events_unbound19:55:171
623207994036,3cyclictest693487-21kworker/u8:2+flush-8:021:30:170
623207994034,4cyclictest945215-21kworker/u8:0+flush-8:000:35:070
623207994034,4cyclictest815580-21kworker/u8:2+flush-8:022:35:220
623207994030,8cyclictest884824-21ntpq23:25:150
623214993933,4cyclictest693487-21kworker/u8:2+flush-8:021:35:172
623209993936,2cyclictest749960-21kworker/u8:1+events_unbound22:25:251
623209993935,3cyclictest881323-21kworker/u8:3+events_unbound00:08:281
623209993935,3cyclictest749960-21kworker/u8:1+flush-8:021:55:111
623209993935,3cyclictest749960-21kworker/u8:1+flush-8:021:55:101
623209993935,3cyclictest710577-21kworker/u8:3+events_unbound21:10:251
623209993935,3cyclictest710577-21kworker/u8:3+events_unbound20:50:161
623209993935,3cyclictest693487-21kworker/u8:2+flush-8:021:37:341
623209993935,3cyclictest627723-21kworker/u8:1+flush-8:020:25:071
623209993927,9cyclictest1704890-21systemd-journal22:45:011
623207993935,3cyclictest815580-21kworker/u8:2+flush-8:022:20:070
623207993934,3cyclictest749960-21kworker/u8:1+flush-8:021:55:180
623207993934,3cyclictest749960-21kworker/u8:1+flush-8:021:55:170
623207993934,3cyclictest679571-21kworker/u8:0+flush-8:020:25:200
623207993929,8cyclictest749593-21ntpq21:10:170
623209993835,2cyclictest749960-21kworker/u8:1+events_unbound22:45:041
623209993834,3cyclictest649927-21kworker/u8:0+events_unbound19:40:221
623209993834,2cyclictest749960-21kworker/u8:1+events_unbound21:43:261
623209993833,4cyclictest730496-21kworker/u8:0+flush-8:020:55:081
623209993831,5cyclictest1704890-21systemd-journal19:50:241
623209993824,11cyclictest1704890-21systemd-journal23:08:231
623207993829,7cyclictest894756-21ntpq23:35:140
623209993733,3cyclictest870515-21kworker/u8:2+events_unbound23:40:231
623209993723,9cyclictest835853-21apt-get22:40:011
623207993733,3cyclictest627723-21kworker/u8:1+flush-8:019:45:120
623207993732,3cyclictest750196-21kworker/u8:4+events_unbound22:15:140
623207993728,7cyclictest1704890-21systemd-journal23:05:000
623214993626,8cyclictest1704890-21systemd-journal22:25:012
623209993633,2cyclictest911552-21irqrtprio23:55:101
623209993632,3cyclictest915582-21kworker/u8:2+events_unbound00:00:091
623209993628,6cyclictest805123-21ntpq22:05:171
623209993628,5cyclictest694503-21cut20:15:111
623207993631,3cyclictest3975468-21kworker/u8:3+flush-8:020:05:200
623209993531,3cyclictest881323-21kworker/u8:3+events_unbound00:14:381
623209993531,3cyclictest791411-21kworker/u8:0+events_unbound22:01:231
623209993531,3cyclictest749960-21kworker/u8:1+events_unbound21:25:251
623207993531,3cyclictest693487-21kworker/u8:2+events_unbound21:35:220
623207993529,4cyclictest919770-21kworker/u8:4+flush-8:000:00:160
623209993430,3cyclictest910012-21kworker/u8:1+events_unbound00:30:071
623209993430,3cyclictest881323-21kworker/u8:3+events_unbound23:30:101
623209993430,3cyclictest710577-21kworker/u8:3+events_unbound21:01:261
623209993430,3cyclictest710577-21kworker/u8:3+events_unbound20:35:171
623209993428,4cyclictest930995-21apt-get00:15:031
623209993421,10cyclictest1704890-21systemd-journal19:24:591
623207993429,4cyclictest791411-21kworker/u8:0+flush-8:022:05:200
623207993428,4cyclictest710577-21kworker/u8:3+flush-8:021:00:070
623207993426,6cyclictest714689-21ntpq20:35:170
623214993328,3cyclictest815580-21kworker/u8:2+flush-8:022:40:062
623214993324,7cyclictest1704890-21systemd-journal19:55:002
623209993330,2cyclictest856721-21kworker/u8:0+events_unbound23:00:121
623209993327,4cyclictest806608-21fschecks_count22:10:061
623209993319,11cyclictest1704890-21systemd-journal19:31:251
623207993328,4cyclictest693487-21kworker/u8:2+events_unbound21:05:250
623207993328,3cyclictest749960-21kworker/u8:1+events_unbound22:50:210
623207993327,4cyclictest856721-21kworker/u8:0+flush-8:023:20:240
623207993327,4cyclictest856721-21kworker/u8:0+events_unbound23:15:170
623207993327,4cyclictest660247-21gpgv19:45:000
623207993324,7cyclictest866172-21/usr/sbin/munin23:10:170
8175392320,5sleep3451irq_work/322:20:103
623214993228,3cyclictest693487-21kworker/u8:2+flush-8:021:40:072
623209993228,3cyclictest749960-21kworker/u8:1+events_unbound23:10:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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