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2026-01-22 - 05:16
[ 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 #b, slot #7

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.

Note that this system runs a non-RT kernel.
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 50 highest latencies:
System rackbslot7s.osadl.org (updated Sun Jan 18, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15551256796,5656sleep313981-21kworker/3:123:15:433
15551256796,5656sleep313981-21kworker/3:123:15:433
8524210037,961sleep38568-21ntpq21:09:443
29724279214,761sleep129735-21/usr/sbin/munin22:14:521
3149727075,691sleep031364-21kworker/0:122:22:050
3149727075,691sleep031364-21kworker/0:122:22:050
938126458,628sleep11074-1kworker/1:1H19:25:451
29107262415,590sleep129108-21sendmail-mta23:57:231
482524985,475sleep012185-1kworker/0:1H20:58:390
482524985,475sleep012185-1kworker/0:1H20:58:390
2217024847,467sleep13676-1kworker/1:0H21:52:311
2217024847,467sleep13676-1kworker/1:0H21:52:311
1407324566,443sleep013044-1kworker/0:3H21:26:210
17732241412,386sleep117806-21find23:19:491
2971424087,389sleep13676-1kworker/1:0H23:59:371
1515623767,361sleep26345-1kworker/2:2H23:13:032
1515623767,361sleep26345-1kworker/2:2H23:13:032
1894236376,261sleep31987-21fschecks_time00:14:373
2038623456,328sleep330095-21snmpd20:00:033
20728233452,238sleep320933-21latency_hist21:49:223
686229010,268sleep13676-1kworker/1:0H22:25:181
3480228919,129sleep30-21swapper/300:19:373
10755224075,95sleep310834-21xargs19:30:193
1212222280,6sleep30-21swapper/319:34:463
4811222243,88sleep30-21swapper/322:39:413
19146222110,148sleep319208-21sendmail-msp19:59:193
7248221514,183sleep35999-21systemd-journal22:49:183
18946220212,105sleep319004-21latency23:24:393
18946220212,105sleep319004-21latency23:24:393
5204220074,67sleep30-21swapper/321:00:523
5204220074,67sleep30-21swapper/321:00:523
3318219420,95sleep33461-21unixbench_singl20:49:503
17982218817,92sleep33071-21cyclictest21:39:413
876216546,42sleep330095-21snmpd22:27:343
27953216451,100sleep328068-21cat22:09:493
2344216178,42sleep30-21swapper/320:49:213
14550215313,127sleep314618-21latency_hist19:44:203
1959621508,17sleep00-21swapper/023:24:570
1959621508,17sleep00-21swapper/023:24:570
2615214940,85sleep30-21swapper/322:34:203
28879214813,121sleep228881-21entropy20:29:382
1624221489,80sleep30-21swapper/323:15:553
1624221489,80sleep30-21swapper/323:15:553
11805214814,61sleep30-21swapper/321:19:503
5656214617,108sleep05725-21cat21:01:010
27246214556,45sleep30-21swapper/320:24:343
9186213811,65sleep39288-21fschecks_time22:54:393
21151213342,77sleep30-21swapper/321:49:503
21151213342,77sleep30-21swapper/321:49:503
18081213319,60sleep30-21swapper/323:20:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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