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2026-02-15 - 05:09
[ 290.152] (II) VESA: driver for VESA chipsets: vesa

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
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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 50 highest latencies:
System rack5slot4s.osadl.org (updated Sun Feb 15, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
135696021960,3sleep3584-21kworker/3:2-mm_percpu_wq20:11:113
133683121940,6sleep30-21swapper/319:51:093
137609621440,8sleep239-21ksoftirqd/220:31:122
15863662830,2sleep30-21swapper/300:01:123
15863662830,2sleep30-21swapper/300:01:123
13614672750,3chrt0-21swapper/220:16:072
15375852620,1sleep01537586-21unixbench_multi23:11:220
1293278995546,6cyclictest1319845-21latency_hist19:35:010
1293285995347,4cyclictest1236633-21kworker/u8:3+events_unbound19:15:052
1293285995145,4cyclictest1236633-21kworker/u8:3+events_unbound21:40:022
1293283995040,7cyclictest1537977-21latency_hist23:15:011
1293278995041,6cyclictest1359654-21latency_hist20:15:010
15741272480,6chrt0-21swapper/223:51:082
1293285994842,4cyclictest1477652-21kworker/u8:3+events_unbound22:25:032
1293278994842,4cyclictest1429060-21kworker/u8:2+events_unbound22:00:000
15335072460,3chrt584-21kworker/3:2-mm_percpu_wq23:11:053
1293283994535,7cyclictest1374476-21latency_hist20:30:011
13636652440,2chrt0-21swapper/120:16:101
1293278994331,9cyclictest1418936-21apt-get21:15:010
1293285994238,3cyclictest1477652-21kworker/u8:3+events_unbound22:46:182
1293278994030,8cyclictest1339739-21cp19:55:000
1293285993933,4cyclictest1429060-21kworker/u8:2+events_unbound23:10:012
1293285993928,9cyclictest1567078-21ntpq23:41:142
1293285993834,3cyclictest1374500-21kworker/u8:0+events_unbound21:16:102
1293285993830,6cyclictest1434057-21cat21:30:012
1293283993830,6cyclictest1305338-21/usr/sbin/munin19:21:141
1293285993727,8cyclictest1438933-21awk21:35:002
1293283993727,7cyclictest1325119-21/usr/sbin/munin19:41:141
1293278993732,4cyclictest1463843-21kworker/u8:1+events_unbound22:56:110
1293278993732,4cyclictest1463843-21kworker/u8:1+events_unbound22:56:110
1293278993727,8cyclictest1526992-21ntpq23:01:150
1293283993631,3cyclictest1492330-21needreboot22:26:121
1293278993629,5cyclictest1578277-21kworker/u8:3+events_unbound00:21:070
1293278993628,6cyclictest1349789-21latency_hist20:05:000
1293278993627,7cyclictest1556901-21ntpq23:31:150
1293285993524,8cyclictest1394242-21awk20:50:012
1293278993528,5cyclictest274-21systemd-journal21:33:260
1293278993527,5cyclictest1583377-21apt-get00:01:020
1293278993527,5cyclictest1583377-21apt-get00:01:020
1293285993426,6cyclictest1503171-21awk22:40:002
1293283993427,5cyclictest274-21systemd-journal23:36:031
1293283993426,6cyclictest274-21systemd-journal21:18:011
1293283993425,7cyclictest1444181-21/usr/sbin/munin21:41:141
1293283993422,9cyclictest1617703-21apt-get00:35:011
1293283993329,3cyclictest1374500-21kworker/u8:0+flush-8:020:36:071
1293278993324,7cyclictest1442988-21ntpq21:36:140
129327899331,29cyclictest394-21dbus-daemon19:30:000
1293283993229,2cyclictest1479484-21irqrtprio22:16:071
1293278993226,4cyclictest1374500-21kworker/u8:0+flush-8:021:01:180
1293278993226,4cyclictest1374500-21kworker/u8:0+flush-8:021:01:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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