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2026-02-08 - 00:53
[ 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 #e, 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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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot4s.osadl.org (updated Sat Feb 07, 2026 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2364916994839,6cyclictest2395842-21latency_hist07:40:012
2364911994739,5cyclictest2542408-21latency_hist10:00:010
2364921994339,3cyclictest2375293-21kworker/u8:0+flush-259:008:45:203
2364921994239,2cyclictest2375293-21kworker/u8:0+events_unbound08:00:243
2364911994236,4cyclictest2656727-21gpgv11:50:010
2364921993931,3cyclictest2657182-21kworker/u8:3+flush-259:012:15:163
2364911993935,3cyclictest2657181-21kworker/u8:2+flush-259:012:25:210
2364921993734,2cyclictest2657181-21kworker/u8:2+flush-259:012:15:003
2364921993633,2cyclictest2704220-21kworker/u8:1+flush-259:012:35:013
2364921993633,2cyclictest2349184-21kworker/u8:1+events_unbound07:40:143
2364921993632,3cyclictest2657182-21kworker/u8:3+flush-259:012:05:213
2364921993632,3cyclictest2615127-21apt-get11:10:123
2364921993532,2cyclictest2694116-21kworker/u8:4+flush-259:012:30:013
2364921993531,3cyclictest2375293-21kworker/u8:0+events_unbound07:25:223
2364913993529,4cyclictest2537262-21latency_hist09:55:001
2364911993532,2cyclictest2619639-21kworker/u8:4+flush-259:011:35:160
2364911993530,3cyclictest2630388-21kworker/u8:1+flush-259:011:55:210
2364921993430,3cyclictest2453220-21kworker/u8:1+flush-259:009:10:213
2364911993431,2cyclictest2704220-21kworker/u8:1+events_unbound12:35:220
2364921993327,4cyclictest2583484-21latency_hist10:39:593
2364916993327,4cyclictest252-21systemd-journal08:27:122
2364913993326,5cyclictest2598944-21latency_hist10:55:001
2364921993229,2cyclictest2568093-21kworker/u8:0+events_unbound10:40:223
2364913993226,5cyclictest2474515-21apt-get08:55:121
2364911993227,3cyclictest2657182-21kworker/u8:3+flush-259:012:05:000
2364916993126,3cyclictest2511120-21kworker/u8:2+events_unbound10:05:152
2364913993126,3cyclictest2583755-21apt-get10:40:121
2364913993125,4cyclictest2688281-21latency_hist12:20:011
2364911993128,2cyclictest2411709-21kworker/u8:2+flush-259:008:25:220
2364911993127,3cyclictest2521655-21apt-get09:40:130
2364911993127,3cyclictest2474472-21kworker/u8:3+flush-259:009:50:230
2364911993127,3cyclictest2401018-21kworker/u8:3+events_unbound07:50:270
2364911993125,4cyclictest2448512-21diskstats08:30:140
2364921993027,2cyclictest2474472-21kworker/u8:3+flush-259:010:15:163
2364921993027,2cyclictest2474472-21kworker/u8:3+events_unbound09:05:233
2364921993027,2cyclictest2411709-21kworker/u8:2+flush-259:008:00:003
2364916993026,3cyclictest2474472-21kworker/u8:3+flush-259:010:25:172
2364916993026,2cyclictest2349184-21kworker/u8:1+flush-259:007:20:232
2364921992926,2cyclictest2619639-21kworker/u8:4+flush-259:011:40:223
2364921992925,3cyclictest2511120-21kworker/u8:2+events_unbound10:50:233
2364916992923,4cyclictest2688944-21/usr/sbin/munin12:20:152
2364916992923,4cyclictest252-21systemd-journal11:00:002
2364916992922,5cyclictest509-21rs:main2
2364911992925,3cyclictest2442544-21kworker/u8:3+flush-259:008:35:150
2364911992924,4cyclictest2527236-21apt-get09:45:120
2364921992825,2cyclictest2364894-21kworker/u8:3+flush-259:007:15:163
2364911992824,3cyclictest2619639-21kworker/u8:4+flush-259:011:15:240
2364911992824,3cyclictest2511120-21kworker/u8:2+events_unbound10:30:230
2364911992823,4cyclictest2573208-21latency_hist10:30:000
2364921992724,2cyclictest2511120-21kworker/u8:2+flush-259:009:35:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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