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2026-02-14 - 12:56
[ 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 #2, 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.

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 100 highest latencies:
System rack2slot7s.osadl.org (updated Fri Feb 13, 2026 19:55:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3427894999369,21cyclictest51547-21sh18:10:251
3427893999273,16cyclictest53677-21sh18:10:330
3427893996538,9cyclictest12450irq/32-eth017:40:150
3427895996252,5cyclictest55104-21expr18:10:372
3427894996149,7cyclictest3625479-21kworker/u8:3-xprtiod17:40:191
3427894995850,5cyclictest41956-21sh18:10:021
3427894995850,5cyclictest41956-21sh18:10:021
3427893995548,5cyclictest3738499-21execl17:50:160
3427895995038,9cyclictest15121-21multi.sh18:08:572
3427895995038,9cyclictest15121-21multi.sh18:08:572
3427894995040,4cyclictest0-21swapper/117:50:211
3427895994921,21cyclictest3433357-21execl17:20:172
3427894994939,5cyclictest3426478-21kworker/u8:0-xprtiod17:35:181
3427894994836,5cyclictest0-21swapper/117:20:151
3427895994738,4cyclictest0-21swapper/217:50:172
3427895994737,5cyclictest0-21swapper/217:40:212
3427893994738,6cyclictest3740150-21/usr/sbin/munin17:55:110
3427893994631,12cyclictest3737975-21execl17:50:020
3427893994529,13cyclictest4163123-21sh18:07:070
3427893994529,13cyclictest4163123-21sh18:07:070
3427895994336,3cyclictest0-21swapper/217:49:492
3427893994335,5cyclictest3657646-21basename17:40:000
3427895994033,4cyclictest4013183-21spawn18:03:582
3427894994035,3cyclictest0-21swapper/117:30:211
3427894993930,6cyclictest763-21snmpd17:26:441
3427894993731,3cyclictest0-21swapper/117:49:381
3427894993727,6cyclictest3924811-21spawn18:03:331
3427895993629,4cyclictest119203-21fschecks_count18:30:072
3427895993528,4cyclictest3430742-21unixbench_multi17:10:302
3427895993527,4cyclictest0-21swapper/217:40:002
3427894993526,5cyclictest0-21swapper/118:15:211
3427893993526,6cyclictest3606321-21systemd-journal18:02:580
3427894993325,5cyclictest2126688-21cups-browsed17:10:211
3427894993325,5cyclictest120258-21latency_hist18:35:021
3427894993324,6cyclictest3606335-21systemd-logind18:40:011
3427894993324,6cyclictest117712-21fschecks_count18:25:071
3427895993225,4cyclictest3429448-21latency_hist17:10:022
3427894993224,5cyclictest3739593-21fstime17:55:091
3427895993123,5cyclictest3741104-21fstime17:56:142
3427894993124,5cyclictest0-21swapper/117:20:011
3427893993126,3cyclictest3432607-21munin-run17:20:010
342789599309,4cyclictest36-21ksoftirqd/218:25:152
3427895993022,5cyclictest3523874-21spawn17:34:102
342789599297,5cyclictest36-21ksoftirqd/218:20:192
3427895992922,4cyclictest3435597-21grep17:25:412
3427895992915,3cyclictest171rcu_preempt18:35:172
342789399292,20cyclictest151ktimers/018:20:180
342789599287,4cyclictest36-21ksoftirqd/217:05:022
3427895992823,2cyclictest0-21swapper/218:20:002
3427895992821,4cyclictest3431957-21proc_pri17:15:222
3427894992821,4cyclictest117200-21cron18:25:001
3427893992822,4cyclictest3436834-21sendmail_mailqu17:30:220
3427893992820,6cyclictest0-21swapper/017:28:560
3427893992817,5cyclictest12550irq/33-eth017:10:230
3427893992715,9cyclictest12450irq/32-eth017:20:220
3427894992620,3cyclictest0-21swapper/117:05:271
3427893992620,4cyclictest121088-21ntp_kernel_pll_18:35:170
3427893992519,4cyclictest3429341-21sshd17:05:580
3427893992518,4cyclictest118633-21unixbench_singl18:25:250
342789699242,12cyclictest0-21swapper/318:10:373
342789399232,16cyclictest115062-21ntpq18:15:190
342789699215,10cyclictest0-21swapper/317:44:373
342789399211,9cyclictest1-21systemd17:05:010
3427893992113,6cyclictest119021-21aten2.4-expect18:30:040
342789699203,8cyclictest0-21swapper/318:00:143
342789699192,12cyclictest0-21swapper/317:56:133
342789699183,7cyclictest0-21swapper/318:25:153
342789699183,11cyclictest0-21swapper/317:50:043
342789699172,10cyclictest0-21swapper/318:09:163
342789699172,10cyclictest0-21swapper/318:09:163
342789499178,6cyclictest3606321-21systemd-journal17:05:011
342789699163,7cyclictest0-21swapper/317:20:163
342789699161,7cyclictest0-21swapper/318:20:213
342789699161,7cyclictest0-21swapper/317:10:213
342789699153,5cyclictest0-21swapper/317:35:173
342789699152,7cyclictest0-21swapper/318:30:183
342789699152,5cyclictest0-21swapper/317:15:143
342789699143,7cyclictest0-21swapper/317:45:163
342789699142,6cyclictest0-21swapper/317:30:143
342789699141,7cyclictest0-21swapper/318:40:013
342789699141,6cyclictest0-21swapper/317:05:143
342789699123,6cyclictest0-21swapper/317:25:133
342789699122,4cyclictest0-21swapper/318:15:173
342789699103,6cyclictest0-21swapper/317:05:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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