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2026-02-16 - 03:08
[ 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 Mon Feb 16, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
304450460,0irq/25-eth10-21swapper/319:02:493
2074624637,0sleep20-21swapper/219:03:542
1437923724,0sleep00-21swapper/018:59:040
2050223424,0sleep10-21swapper/119:01:051
208179976,0cyclictest1225-21crond23:13:532
339960,0migration/38860-21sh23:38:393
339960,0migration/33733-21idleruntime-cro20:03:553
339960,0migration/332129-21sh00:33:353
339960,0migration/317784-21sh21:20:213
29725060,0irq/27-eth0-tx-21038-21cut21:04:120
29725060,0irq/27-eth0-tx-15297-21munin-node19:24:130
29715060,0irq/26-eth0-rx-24360-21ssh00:08:133
29715060,0irq/26-eth0-rx-16517-21sshd00:24:003
29715060,0irq/26-eth0-rx-14577-21unixbench_multi00:19:173
29715060,0irq/26-eth0-rx-12315-21cut22:59:113
29715060,0irq/26-eth0-rx-0-21swapper/323:41:293
208179966,0cyclictest0-21swapper/220:34:082
208179966,0cyclictest0-21swapper/200:32:412
208179960,0cyclictest0-21swapper/221:24:162
208169960,0cyclictest1267-21sed23:13:531
208159960,0cyclictest0-21swapper/021:49:050
19160,0ktimersoftd/119058-21diskmemload00:29:431
149960,0migration/09604-21sh22:38:000
149960,0migration/030285-21sendmail_mailqu00:29:140
149960,0migration/026243-21aten_r1power_cu22:49:040
149960,0migration/025903-21sh21:45:530
149960,0migration/024850-21sh23:27:360
149960,0migration/010577-21sh21:37:550
339950,0migration/39701-21taskset21:56:183
339950,0migration/37192-21kthreadcore20:29:113
339950,0migration/3634-21taskset23:12:193
339950,0migration/35285-21kthreadcore21:14:113
339950,0migration/33298-21aten_r1power_vo21:34:063
339950,0migration/332182-21taskset23:51:403
339950,0migration/331541-21kthreadcore22:29:123
339950,0migration/330749-21timerandwakeup00:09:153
339950,0migration/329411-21munin-node19:34:073
339950,0migration/328179-21munin-node22:09:103
339950,0migration/327662-21kthreadcore23:29:113
339950,0migration/327334-21taskset19:07:113
339950,0migration/327096-21latency_hist21:48:533
339950,0migration/32661-21fschecks_time22:34:073
339950,0migration/325437-21diskmemload21:44:333
339950,0migration/318843-21fschecks_time20:39:073
339950,0migration/318120-21idleruntime20:14:083
339950,0migration/31491-21fschecks_time23:54:073
339950,0migration/314724-21taskset19:20:013
339950,0migration/311447-21cpuspeed_turbos21:39:073
339950,0migration/311240-21kthreadcore19:44:103
339950,0migration/310524-21munin-node23:19:083
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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