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2026-02-17 - 21:50
[ 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 #1, slot #2

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.
Unexpectedly long latencies may be caused by SMIs
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 rack1slot2s.osadl.org (updated Tue Feb 17, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
817123727,0sleep30-21swapper/306:59:563
836423624,0sleep20-21swapper/207:02:122
846423422,0sleep00-21swapper/007:03:220
814223223,0sleep10-21swapper/106:59:381
85679965,0cyclictest28870-21unixbench_singl09:54:082
85679960,0cyclictest0-21swapper/209:09:032
85669960,0cyclictest6599-21diskmemload12:17:581
85659965,0cyclictest24247-21cut09:14:020
8215060,0irq/24-0000:00:27600-21latency_hist11:58:452
339960,0migration/35320-21sh09:19:503
339960,0migration/320273-21sh10:29:563
339960,0migration/311934-21taskset10:45:103
339960,0migration/311731-21sh11:27:423
29725060,0irq/27-eth0-tx-8052-21irqrtprio09:04:010
29715060,0irq/26-eth0-rx-8577-21grep10:24:033
29715060,0irq/26-eth0-rx-31541-21irqstats10:19:023
29715060,0irq/26-eth0-rx-23061-21iostat07:14:033
29715060,0irq/26-eth0-rx-12313-21ssh11:28:473
149960,0migration/013284-21sh10:06:230
149960,0migration/011205-21taskset11:26:070
85679955,0cyclictest0-21swapper/207:09:042
85679950,0cyclictest0-21swapper/212:30:512
85669955,0cyclictest0-21swapper/109:09:431
85669950,0cyclictest0-21swapper/112:20:581
85669950,0cyclictest0-21swapper/110:26:111
85669950,0cyclictest0-21swapper/110:18:091
85669950,0cyclictest0-21swapper/110:03:291
85669950,0cyclictest0-21swapper/109:46:371
85669950,0cyclictest0-21swapper/109:18:051
85659955,0cyclictest0-21swapper/012:01:460
85659955,0cyclictest0-21swapper/009:43:400
85659950,0cyclictest0-21swapper/012:16:450
85659950,0cyclictest0-21swapper/010:50:400
85659950,0cyclictest0-21swapper/007:44:000
4150,0ktimersoftd/00-21swapper/011:55:180
339950,0migration/39252-21kthreadcore10:04:023
339950,0migration/36495-21sshd09:02:523
339950,0migration/34643-21taskset08:13:373
339950,0migration/33872-21latency_hist07:48:463
339950,0migration/33563-21fschecks_time07:23:583
339950,0migration/331296-21kthreadcore10:39:013
339950,0migration/330529-21kthreadcore11:59:023
339950,0migration/329982-21munin-node07:19:033
339950,0migration/328380-21kthreadcore08:29:043
339950,0migration/326311-21kthreadcore09:14:033
339950,0migration/323097-21timerandwakeup07:59:103
339950,0migration/321204-21latency_hist10:53:453
339950,0migration/320069-21kthreadcore08:24:013
339950,0migration/315879-21latency07:54:043
339950,0migration/31568-21rt-features11:39:083
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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