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2026-02-12 - 01:46
[ 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 Wed Feb 11, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4992221850,3sleep3584-21kworker/3:2+events12:36:093
3917624995546,6cyclictest4003932-21latency_hist08:35:011
40564852540,2sleep30-21swapper/309:26:123
40500642540,4sleep2371rcuc/209:21:092
3917620995040,7cyclictest4098426-21ntpq10:06:140
3917624994942,6cyclictest4003163-21kworker/u8:0+events_unbound08:56:251
3917620994740,5cyclictest3949512-21kworker/u8:2+events_unbound08:00:000
3917626994642,3cyclictest3912592-21kworker/u8:2+flush-8:007:15:052
3917624994337,5cyclictest4044144-21kworker/u8:2+events_unbound10:36:211
3917624994238,3cyclictest4029277-21kworker/u8:3+flush-8:009:56:221
3917624994237,3cyclictest3988295-21kworker/u8:2+flush-8:008:26:211
3917624994235,5cyclictest4129375-21/usr/sbin/munin10:41:231
3917624994233,7cyclictest3984447-21/usr/sbin/munin08:16:221
3917624994233,6cyclictest3954242-21latency_hist07:45:001
3917624994233,6cyclictest3954242-21latency_hist07:45:001
3917620994233,7cyclictest4089140-21apt-get10:00:010
3917626994137,3cyclictest4044144-21kworker/u8:2+events_unbound10:16:222
3917626994036,3cyclictest4069302-21kworker/u8:0+events_unbound10:10:002
3917624994035,4cyclictest4003163-21kworker/u8:0+flush-8:008:51:101
3917620994033,5cyclictest4069058-21latency_hist09:40:010
3917620994033,5cyclictest4069058-21latency_hist09:40:000
3917624993934,4cyclictest4003163-21kworker/u8:0+events_unbound09:06:131
3917624993934,4cyclictest3875417-21kworker/u8:3+flush-8:007:46:081
3917624993934,3cyclictest4014168-21kworker/u8:1+events_unbound09:01:101
3917624993933,4cyclictest4014168-21kworker/u8:1+events_unbound09:36:201
3917624993933,4cyclictest4014168-21kworker/u8:1+events_unbound09:36:201
3917620993934,4cyclictest4183225-21kworker/u8:2+events_unbound11:46:160
3917620993932,5cyclictest3979045-21base6408:10:000
3917626993833,4cyclictest3988295-21kworker/u8:2+events_unbound08:31:142
3917624993833,4cyclictest3902559-21kworker/u8:1+flush-8:007:16:081
3917626993731,4cyclictest4193056-21kworker/u8:3+flush-8:012:16:092
3917624993731,4cyclictest4044144-21kworker/u8:2+flush-8:011:01:101
3917624993726,3cyclictest4114380-21kworker/u8:3+flush-8:010:46:191
3917620993732,3cyclictest4003163-21kworker/u8:0+events_unbound09:00:010
3917626993629,5cyclictest4049190-21gpgv09:20:002
3917624993632,3cyclictest4173524-21kworker/u8:0+events_unbound12:21:091
3917624993627,6cyclictest4059186-21latency_hist09:30:011
3917620993632,3cyclictest19340-21latency_hist12:05:010
3917620993631,4cyclictest4044144-21kworker/u8:2+events_unbound11:01:050
3917620993631,4cyclictest3924627-21kworker/u8:0+flush-8:007:36:210
3917620993628,7cyclictest3969081-21kworker/u8:0+flush-8:008:16:090
3917624993527,6cyclictest274-21systemd-journal12:27:141
3917626993430,3cyclictest24368-21kworker/u8:2+flush-8:012:20:152
3917624993429,4cyclictest4183225-21kworker/u8:2+events_unbound12:01:151
3917624993429,3cyclictest3875417-21kworker/u8:3+flush-8:007:36:141
3917624993428,5cyclictest3924627-21kworker/u8:0+flush-8:007:26:211
3917624993425,7cyclictest274-21systemd-journal10:27:141
3917620993429,4cyclictest4139200-21kworker/u8:1+events_unbound11:31:130
3917620993427,5cyclictest4034190-21wc09:05:010
3917620993427,5cyclictest274-21systemd-journal10:45:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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