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2026-05-27 - 08:49

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 Wed May 27, 2026 00:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4115046994542,2cyclictest4094300-21kworker/u8:3+events_unbound19:40:151
4115042994538,5cyclictest8581-21latency_hist20:35:010
4115046994037,2cyclictest55597-21kworker/u8:1+events_unbound21:25:161
4115054993934,4cyclictest19107-21kworker/u8:1+flush-259:020:50:003
4115046993936,2cyclictest4176879-21kworker/u8:2+events_unbound21:10:141
4115046993936,2cyclictest4066182-21kworker/u8:2+events_unbound19:20:241
4115046993936,2cyclictest201296-21kworker/u8:0+events_unbound00:25:131
4115046993936,2cyclictest123423-21kworker/u8:2+events_unbound22:40:221
4115046993933,3cyclictest4156100-21kworker/u8:0+events_unbound19:55:231
4115046993836,2cyclictest97087-21kworker/u8:3+events_unbound22:50:221
4115046993835,2cyclictest77103-21kworker/u8:3+events_unbound21:45:201
4115046993835,2cyclictest112913-21kworker/u8:1+events_unbound22:15:211
4115046993833,4cyclictest55845-21latency_hist21:20:011
4115046993734,2cyclictest248522-21kworker/u8:4+events_unbound00:35:231
4115046993733,3cyclictest201296-21kworker/u8:0+events_unbound00:17:301
4115046993633,2cyclictest97087-21kworker/u8:3+events_unbound22:35:231
4115046993632,3cyclictest4176879-21kworker/u8:2+events_unbound20:30:231
4115046993632,3cyclictest4176879-21kworker/u8:2+events_unbound20:30:231
4115046993632,3cyclictest216996-21apt-get23:55:031
4115046993632,3cyclictest170154-21kworker/u8:1+events_unbound23:45:301
4115046993630,3cyclictest4110046-21kworker/u8:4+events_unbound19:51:261
4115042993632,3cyclictest4140948-21apt-get19:35:100
4115046993531,3cyclictest97087-21kworker/u8:3+events_unbound23:09:291
4115046993531,3cyclictest112913-21kworker/u8:1+events_unbound22:20:221
4115046993531,3cyclictest102862-21kworker/u8:0+flush-259:022:25:301
4115046993529,4cyclictest154607-21diskstats22:55:141
4115046993430,3cyclictest97087-21kworker/u8:3+events_unbound23:42:221
4115046993430,3cyclictest4156100-21kworker/u8:0+events_unbound20:05:271
4115046993330,2cyclictest4094300-21kworker/u8:3+events_unbound19:15:231
4115046993330,2cyclictest227900-21kworker/u8:3+events_unbound00:31:321
4115046993330,2cyclictest227900-21kworker/u8:3+events_unbound00:05:301
4115046993330,2cyclictest201296-21kworker/u8:0+events_unbound00:20:231
4115046993330,2cyclictest19107-21kworker/u8:1+events_unbound20:50:141
4115046993330,2cyclictest149205-21kworker/u8:4+events_unbound23:20:231
4115046993329,3cyclictest97087-21kworker/u8:3+events_unbound22:03:291
4115046993228,3cyclictest4176879-21kworker/u8:2+events_unbound20:21:271
4115046993228,3cyclictest4094300-21kworker/u8:3+events_unbound20:35:211
4115046993228,3cyclictest4094300-21kworker/u8:3+events_unbound20:10:291
4115042993226,4cyclictest142914-21ntpq22:40:190
4115050993125,4cyclictest335557-21systemd-journal21:31:302
4115046993128,2cyclictest76890-21kworker/u8:1+events_unbound21:41:321
4115046993128,2cyclictest4094300-21kworker/u8:3+events_unbound19:45:201
4115046993128,2cyclictest29229-21kworker/u8:3+flush-259:021:05:201
4115046993128,2cyclictest149205-21kworker/u8:4+events_unbound23:30:131
4115046993127,3cyclictest4110046-21kworker/u8:4+events_unbound19:39:291
4115046993127,3cyclictest149205-21kworker/u8:4+events_unbound23:10:171
4115054993024,4cyclictest4094300-21kworker/u8:3+flush-259:019:50:003
4115050993027,2cyclictest123423-21kworker/u8:2+events_unbound22:45:152
4115050993026,3cyclictest97087-21kworker/u8:3+events_unbound22:10:152
4115050993024,4cyclictest4130408-21latency_hist19:25:012
4115046993027,2cyclictest4110046-21kworker/u8:4+events_unbound19:10:151
4115046993027,2cyclictest149205-21kworker/u8:4+events_unbound23:25:221
4115046993026,3cyclictest97087-21kworker/u8:3+events_unbound22:05:301
4115042993025,3cyclictest66661-21base6421:30:010
411504299300,28cyclictest1-21systemd21:10:000
411504299300,28cyclictest1-21systemd19:28:280
4115054992922,5cyclictest65222-21ntpq21:25:203
4115046992925,3cyclictest4110046-21kworker/u8:4+events_unbound20:41:281
4115046992925,3cyclictest149205-21kworker/u8:4+events_unbound23:00:301
4115042992924,4cyclictest335557-21systemd-journal19:54:590
4115050992824,3cyclictest97087-21kworker/u8:3+flush-259:022:50:262
4115046992825,2cyclictest97087-21kworker/u8:3+events_unbound23:16:311
4115046992825,2cyclictest4094300-21kworker/u8:3+events_unbound20:15:241
4115046992824,3cyclictest97087-21kworker/u8:3+events_unbound23:36:301
4115046992824,3cyclictest4176879-21kworker/u8:2+events_unbound21:30:301
4115046992823,4cyclictest216109-21ntpq23:50:221
4115042992824,3cyclictest4176879-21kworker/u8:2+flush-259:021:10:180
411504299280,27cyclictest1-21systemd23:39:280
4115050992721,5cyclictest221741-21ntpq23:55:212
4115046992725,2cyclictest201296-21kworker/u8:0+events_unbound00:04:291
4115046992724,2cyclictest123423-21kworker/u8:2+flush-259:022:30:231
4115046992723,3cyclictest4176879-21kworker/u8:2+events_unbound21:01:311
4115042992723,3cyclictest227900-21kworker/u8:3+events_unbound00:35:010
4115042992723,3cyclictest149205-21kworker/u8:4+flush-259:023:25:170
4115042992720,5cyclictest335557-21systemd-journal22:29:590
4115054992621,4cyclictest4110046-21kworker/u8:4+flush-259:019:20:003
4115054992621,3cyclictest4192445-21apt-get20:25:113
4115054992619,5cyclictest195042-21ntpq23:30:203
4115050992623,2cyclictest97087-21kworker/u8:3+flush-259:022:30:152
4115050992623,2cyclictest102899-21apt-get22:05:092
4115046992623,3cyclictest4176879-21kworker/u8:2+events_unbound22:14:291
4115046992622,3cyclictest55597-21kworker/u8:1+events_unbound21:21:511
4115046992622,3cyclictest4176879-21kworker/u8:2+events_unbound21:57:311
4115046992619,5cyclictest233461-21diskstats00:10:141
4115042992623,2cyclictest4094300-21kworker/u8:3+events_unbound19:45:180
4115042992623,2cyclictest149205-21kworker/u8:4+events_unbound23:00:210
4115042992621,3cyclictest174434-21ntpq23:10:220
4115054992520,3cyclictest56111-21apt-get21:20:133
4115054992519,4cyclictest70871-21ntpq21:30:243
4115054992514,9cyclictest118040-21cron22:20:003
4115050992522,2cyclictest4110046-21kworker/u8:4+events_unbound19:25:162
4115050992521,3cyclictest4094300-21kworker/u8:3+events_unbound19:40:232
4115050992521,3cyclictest29229-21kworker/u8:3+events_unbound21:05:222
4115050992521,3cyclictest29229-21kworker/u8:3+events_unbound21:03:302
4115046992522,2cyclictest4176879-21kworker/u8:2+events_unbound20:26:441
4115042992522,2cyclictest4094300-21kworker/u8:3+events_unbound20:15:000
4115042992522,2cyclictest201296-21kworker/u8:0+events_unbound00:20:200
4115042992521,3cyclictest19107-21kworker/u8:1+events_unbound20:46:480
4115042992520,4cyclictest66349-21gpgv21:30:010
4115054992418,4cyclictest4176879-21kworker/u8:2+flush-259:020:20:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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