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2026-03-08 - 06:05
[ 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 Mar 08, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1196740995145,4cyclictest1387119-21kworker/u8:1+events_unbound23:11:421
1196740994942,5cyclictest1263050-21kworker/u8:2+flush-8:020:36:581
1196740994939,7cyclictest1327321-21latency_hist21:20:011
1196740994843,3cyclictest1191718-21kworker/u8:1+events_unbound21:50:011
1196740994740,5cyclictest1460825-21kworker/u8:3+flush-8:023:51:431
1196740994738,6cyclictest1238368-21latency_hist19:50:011
1196740994737,7cyclictest1381939-21latency_hist22:15:011
1196740994439,3cyclictest1191718-21kworker/u8:1+events_unbound20:31:561
1196740994439,3cyclictest1051571-21kworker/u8:4+flush-8:020:15:001
1196740994437,5cyclictest1332502-21kworker/u8:2+events_unbound22:01:521
1196740994436,5cyclictest1416514-21kworker/u8:2+events_unbound22:51:551
1196736994435,6cyclictest1451040-21latency_hist23:25:010
1196740994336,5cyclictest1376743-21kworker/u8:0+flush-8:023:31:571
1196740994336,5cyclictest1376743-21kworker/u8:0+events_unbound22:41:441
1196740994334,6cyclictest280-21systemd-journal20:46:421
1196740994234,6cyclictest1332502-21kworker/u8:2+flush-8:022:07:011
1196740994233,6cyclictest1387119-21kworker/u8:1+flush-8:023:56:521
1196740994230,9cyclictest280-21systemd-journal00:31:441
1196736994233,7cyclictest1341348-21ntpq21:31:510
1196740994135,4cyclictest280-21systemd-journal00:16:431
14318152400,3chrt0-21swapper/223:06:422
1196742994030,8cyclictest1292759-21awk20:45:002
1196740994036,3cyclictest1270910-21kworker/u8:0+events_unbound20:26:471
1196740994035,3cyclictest1191718-21kworker/u8:1+events_unbound20:51:491
1196740994034,4cyclictest1485947-21kworker/u8:2+flush-8:000:01:551
1196740994034,4cyclictest1466381-21kworker/u8:0+flush-8:000:06:561
1196740993934,3cyclictest1460825-21kworker/u8:3+events_unbound23:46:461
1196740993933,4cyclictest1495842-21kworker/u8:1+events_unbound00:11:581
1196740993933,4cyclictest1332502-21kworker/u8:2+events_unbound21:45:001
1196740993930,4cyclictest1387119-21kworker/u8:1+events_unbound23:16:411
1196736993930,6cyclictest1253192-21latency_hist20:05:000
1196740993832,5cyclictest1387119-21kworker/u8:1+flush-8:023:26:581
1196740993828,7cyclictest280-21systemd-journal21:11:421
1196736993830,5cyclictest1312512-21latency_hist21:05:010
1196736993828,8cyclictest1207726-21ntpq19:17:000
14904022370,5sleep20-21swapper/200:01:592
1196740993731,5cyclictest1460825-21kworker/u8:3+flush-8:000:21:581
1196740993731,5cyclictest1337857-21kworker/u8:3+flush-8:022:16:521
1196740993731,4cyclictest1051571-21kworker/u8:4+events_unbound20:06:541
1196740993731,4cyclictest1051571-21kworker/u8:4+events_unbound20:06:541
1196740993730,5cyclictest1397094-21kworker/u8:3+events_unbound22:36:551
1196736993731,4cyclictest1416514-21kworker/u8:2+flush-8:023:01:440
1196736993729,6cyclictest1347357-21awk21:40:000
1196736993729,6cyclictest1347357-21awk21:40:000
1196740993631,3cyclictest1159453-21kworker/u8:0+flush-8:019:51:561
1196740993630,4cyclictest1191718-21kworker/u8:1+events_unbound20:56:471
1196740993630,4cyclictest1051571-21kworker/u8:4+events_unbound20:01:451
1196740993629,5cyclictest1332502-21kworker/u8:2+flush-8:021:57:001
1196740993629,5cyclictest1267992-21latency_hist20:20:011
1196740993530,3cyclictest1201673-21systemd-run19:15:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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