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2026-01-21 - 04:04
[ 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 highest latencies:
System rack2slot7s.osadl.org (updated Tue Jan 20, 2026 19:55:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
837527997967,8cyclictest1656752-21sort18:10:171
837526997057,8cyclictest1654104-21sh18:10:090
837528996451,9cyclictest1655204-21grep18:10:122
837528995851,4cyclictest1168-21mta-sts-daemon17:28:222
837528995848,6cyclictest1653353-21sh18:10:062
837527995620,20cyclictest0-21swapper/117:43:091
837528995543,7cyclictest1149877-21ntpq17:45:062
837526995535,15cyclictest12450irq/32-eth018:30:010
837527995445,6cyclictest1733157-21munin-run18:40:011
837527995445,6cyclictest1733157-21munin-run18:40:011
837527995436,15cyclictest1608430-21sh18:08:181
837527995436,15cyclictest1608430-21sh18:08:181
837527995319,30cyclictest1151630-21execl17:50:181
837528995142,6cyclictest1651588-21rm18:10:022
837528995142,6cyclictest1124647-21od17:42:342
837528995042,5cyclictest840643-21latency_hist17:15:032
837526994942,5cyclictest1146998-21multi.sh17:43:270
837528994826,15cyclictest843782-21latency_hist17:25:022
837527994835,8cyclictest1149895-21dhry2reg17:45:071
837527994830,14cyclictest1566505-21latency_hist18:05:021
837528994737,6cyclictest1153785-21Run17:56:032
837526994737,6cyclictest0-21swapper/017:40:020
837527994640,3cyclictest0-21swapper/117:35:011
837527994631,12cyclictest0-21swapper/117:15:011
837526994537,5cyclictest1648550-21expr18:09:540
837526994537,5cyclictest1648550-21expr18:09:540
837526994530,11cyclictest0-21swapper/017:20:000
837528994433,7cyclictest1151634-21execl17:50:112
837527994435,6cyclictest1068904-21multi.sh17:40:021
837526994438,3cyclictest0-21swapper/017:50:100
837526994434,6cyclictest843071-21kworker/u8:0-xprtiod17:25:010
837528994336,4cyclictest1032894-21latency_hist17:35:032
837528994335,5cyclictest1730203-21systemd-run18:30:012
83752799433,29cyclictest1153832-21Run17:58:261
837526994335,5cyclictest1150666-21execl17:50:000
837526994327,12cyclictest12450irq/32-eth017:35:010
837528994235,3cyclictest0-21swapper/217:40:022
837528994232,5cyclictest1155515-21Run18:00:272
837527994233,4cyclictest0-21swapper/118:30:011
837527994220,18cyclictest0-21swapper/117:10:031
83752799412,4cyclictest1730477-21ntpq18:30:041
83752799411,11cyclictest844079-21ntpq17:25:041
837526994128,9cyclictest0-21swapper/018:20:010
837527994030,4cyclictest0-21swapper/117:20:011
837526994033,4cyclictest0-21swapper/017:30:020
837526994032,5cyclictest837531-21systemd-run17:05:010
837528993929,6cyclictest837548-21ntpq17:05:022
83752799392,4cyclictest1726002-21ntpq18:15:051
837527993923,12cyclictest0-21swapper/117:20:061
83752799391,4cyclictest1727534-21ntpq18:20:061
83752899385,28cyclictest1733341-21latency_hist18:40:032
83752899385,28cyclictest1733341-21latency_hist18:40:032
837526993831,4cyclictest840448-21ls17:15:010
837528993731,3cyclictest0-21swapper/218:20:012
837526993729,6cyclictest564-21dbus-daemon18:35:030
837528993628,5cyclictest1731561-21latency_hist18:35:022
837527993625,4cyclictest0-21swapper/117:05:011
837526993629,4cyclictest1154639-21ntpq18:00:010
837526993627,7cyclictest838882-21systemd-run17:10:010
837526993528,5cyclictest1155780-21spawn18:03:180
837528993425,7cyclictest842244-21latency_hist17:20:022
837526993429,2cyclictest0-21swapper/018:25:020
83752899336,8cyclictest171rcu_preempt17:05:052
83752899331,28cyclictest1728700-21latency_hist18:25:032
837526993018,8cyclictest1733239-21cat18:40:020
837526993018,8cyclictest1733239-21cat18:40:020
83752999211,10cyclictest0-21swapper/318:25:013
83752999192,9cyclictest0-21swapper/317:55:013
83752999174,7cyclictest0-21swapper/317:20:003
83752999171,10cyclictest0-21swapper/318:00:373
83752999163,8cyclictest0-21swapper/317:30:013
83752999162,8cyclictest0-21swapper/318:10:063
83752999162,8cyclictest0-21swapper/317:40:033
83752999161,7cyclictest0-21swapper/317:35:013
83752999153,9cyclictest0-21swapper/318:10:083
83752999151,8cyclictest0-21swapper/317:10:043
83752999142,8cyclictest0-21swapper/317:25:033
83752999141,8cyclictest0-21swapper/318:35:033
83752999141,8cyclictest0-21swapper/318:05:323
83752999141,7cyclictest0-21swapper/317:05:023
83752999134,6cyclictest0-21swapper/317:45:093
83752999123,6cyclictest0-21swapper/318:30:023
83752999123,6cyclictest0-21swapper/317:57:023
83752999122,6cyclictest0-21swapper/317:40:083
83752999122,6cyclictest0-21swapper/317:10:033
83752999112,5cyclictest0-21swapper/318:40:013
83752999112,5cyclictest0-21swapper/318:40:013
83752999103,5cyclictest0-21swapper/318:20:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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