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2026-03-05 - 10:54
[ 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 #e, 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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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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot4s.osadl.org (updated Thu Mar 05, 2026 00:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2307403994237,3cyclictest2397039-21base6420:35:013
2307395993936,2cyclictest2624727-21kworker/u8:1+flush-259:000:15:241
2307403993531,3cyclictest2449175-21apt-get21:25:113
2307395993431,2cyclictest2349320-21kworker/u8:2+events_unbound19:55:191
2307395993330,2cyclictest2479860-21kworker/u8:3+events_unbound22:40:231
2307395993330,2cyclictest2396743-21kworker/u8:2+events_unbound20:45:191
2307395993329,3cyclictest2598979-21kworker/u8:2+events_unbound00:30:201
2307395993229,2cyclictest2149756-21kworker/u8:0+events_unbound19:10:131
2307395993128,2cyclictest2469573-21kworker/u8:1+events_unbound22:20:211
2307395993127,3cyclictest2577976-21kworker/u8:1+flush-259:023:45:001
2307395993126,3cyclictest2417638-21kworker/u8:1+events_unbound21:15:131
2307395993027,2cyclictest2546678-21kworker/u8:0+events_unbound23:55:201
2307395993026,3cyclictest2500433-21kworker/u8:2+events_unbound22:55:201
2307395993026,2cyclictest2443356-21kworker/u8:3+flush-259:021:30:191
2307403992925,3cyclictest2598979-21kworker/u8:2+flush-259:000:30:143
2307403992922,5cyclictest2520043-21ntpq22:30:183
2307398992922,4cyclictest2375689-21cp20:15:012
2307395992926,2cyclictest2443356-21kworker/u8:3+events_unbound21:40:201
2307395992923,3cyclictest2307368-21kworker/u8:1+events_unbound19:50:201
2307403992823,3cyclictest2505548-21latency_hist22:20:003
2307398992822,4cyclictest2635047-21latency_hist00:25:012
2307395992825,2cyclictest2598979-21kworker/u8:2+events_unbound23:50:121
2307392992822,4cyclictest2598979-21kworker/u8:2+flush-259:000:25:010
2307392992822,4cyclictest2598979-21kworker/u8:2+flush-259:000:25:010
2307395992724,2cyclictest2546678-21kworker/u8:0+events_unbound23:35:131
2307395992723,3cyclictest251476-21kworker/u8:3+events_unbound19:20:101
2307392992720,5cyclictest2454496-21diskstats21:30:140
2307398992620,4cyclictest2328354-21latency_hist19:30:002
2307395992620,4cyclictest252-21systemd-journal20:00:011
2307395992522,2cyclictest2417638-21kworker/u8:1+events_unbound21:25:211
2307395992522,2cyclictest2370365-21kworker/u8:0+events_unbound20:50:151
2307395992521,3cyclictest2402112-21kworker/u8:4+flush-259:021:05:241
2307392992522,2cyclictest2500433-21kworker/u8:2+flush-259:022:50:190
2307392992519,4cyclictest2318081-21latency_hist19:20:000
2307403992417,5cyclictest2385287-21ntpq20:20:203
2307395992421,2cyclictest2609259-21kworker/u8:3+events_unbound00:40:011
2307395992421,2cyclictest2546678-21kworker/u8:0+events_unbound23:25:451
2307395992421,2cyclictest2396743-21kworker/u8:2+events_unbound20:35:221
2307395992421,2cyclictest2149756-21kworker/u8:0+events_unbound19:15:241
2307395992420,3cyclictest2546678-21kworker/u8:0+flush-259:023:00:251
2307392992416,5cyclictest2588231-21latency_hist23:40:000
2307403992318,3cyclictest2396743-21kworker/u8:2+flush-259:020:40:233
2307395992320,2cyclictest2546678-21kworker/u8:0+flush-259:023:34:551
2307395992320,2cyclictest2500433-21kworker/u8:2+flush-259:022:50:181
2307395992320,2cyclictest2479860-21kworker/u8:3+flush-259:022:45:231
2307395992320,2cyclictest2338872-21kworker/u8:3+flush-259:020:10:241
2307395992319,3cyclictest2479860-21kworker/u8:3+events_unbound23:20:121
2307392992319,3cyclictest2479860-21kworker/u8:3+flush-259:022:35:200
2307392992316,5cyclictest2374583-21ntpq20:10:200
230739899223,10cyclictest2635113-21cat00:25:002
2307398992219,2cyclictest2500433-21kworker/u8:2+events_unbound22:25:002
2307398992217,4cyclictest2552503-21apt-get23:05:132
2307398992217,3cyclictest0-21swapper/219:45:002
2307395992219,2cyclictest2459245-21kworker/u8:0+flush-259:021:55:191
2307395992219,2cyclictest2338872-21kworker/u8:3+events_unbound19:45:241
2307403992117,3cyclictest2598979-21kworker/u8:2+flush-259:023:55:233
2307403992117,3cyclictest252-21systemd-journal20:50:003
230739899214,8cyclictest2454083-21basename21:29:592
2307398992115,4cyclictest2396743-21kworker/u8:2+flush-259:021:00:132
2307395992118,2cyclictest2598979-21kworker/u8:2+flush-259:000:25:231
2307395992118,2cyclictest2546678-21kworker/u8:0+events_unbound23:05:151
2307395992118,2cyclictest2370365-21kworker/u8:0+events_unbound20:15:191
2307395992118,2cyclictest2349320-21kworker/u8:2+flush-259:020:20:191
2307395992117,3cyclictest2459245-21kworker/u8:0+events_unbound21:50:211
2307395992117,3cyclictest2443356-21kworker/u8:3+events_unbound21:35:201
2307395992115,4cyclictest2489254-21ntpq22:00:191
2307392992117,3cyclictest2546678-21kworker/u8:0+flush-259:023:15:270
2307392992117,3cyclictest2149756-21kworker/u8:0+flush-259:019:15:000
2307392992114,5cyclictest2479860-21kworker/u8:3+flush-259:023:49:590
2307403992016,3cyclictest252-21systemd-journal23:00:383
2307403992014,4cyclictest2562538-21latency_hist23:15:013
230739899204,4cyclictest2358779-21ntpq19:55:202
2307398992016,2cyclictest2546674-21idleruntime-cro23:00:002
2307398992014,4cyclictest2443356-21kworker/u8:3+flush-259:021:40:152
2307395992018,1cyclictest2500433-21kworker/u8:2+events_unbound22:25:181
2307395992017,2cyclictest2598979-21kworker/u8:2+events_unbound00:05:191
2307395992017,2cyclictest2479860-21kworker/u8:3+flush-259:022:10:221
2307392992016,2cyclictest2510951-21apt-get22:25:110
2307392992013,5cyclictest2509834-21ntpq22:20:210
2307392992013,4cyclictest2473844-21ntpq21:45:220
2307403991915,3cyclictest2546678-21kworker/u8:0+flush-259:023:35:243
230739899193,5cyclictest2540651-21ntpq22:50:202
2307398991913,4cyclictest252-21systemd-journal23:20:442
2307398991912,5cyclictest2328601-21/usr/sbin/munin19:30:132
2307395991916,2cyclictest252-21systemd-journal22:40:011
2307395991916,2cyclictest2479860-21kworker/u8:3+flush-259:023:15:221
2307395991915,3cyclictest2577976-21kworker/u8:1+flush-259:023:45:191
2307395991915,3cyclictest2402112-21kworker/u8:4+events_unbound21:03:331
2307395991914,2cyclictest2396743-21kworker/u8:2+events_unbound20:40:221
2307395991914,2cyclictest2338872-21kworker/u8:3+events_unbound20:30:131
2307395991913,4cyclictest2307314-21latency_hist19:09:591
2307392991916,2cyclictest1-21systemd00:00:340
230739899185,7cyclictest2598084-21ntpq23:45:212
230739899184,3cyclictest2629065-21ntpq00:15:222
2307398991815,2cyclictest2323247-21turbostat.cron19:25:002
2307395991815,2cyclictest2469573-21kworker/u8:1+flush-259:022:05:251
2307395991814,3cyclictest2307368-21kworker/u8:1+flush-259:019:35:051
2307395991813,3cyclictest2609476-21/usr/sbin/munin00:00:231
2307392991814,3cyclictest2546678-21kworker/u8:0+flush-259:023:25:210
2307392991813,3cyclictest2591213-21ps23:40:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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