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2026-05-23 - 05:07

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 Sat May 23, 2026 00:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3810092995852,4cyclictest3986476-21getprofile21:57:453
3810083994236,4cyclictest3809982-21latency_hist19:10:011
3810078994238,3cyclictest4060419-21kworker/u8:0+events_unbound23:30:210
3810088994135,4cyclictest4102056-21latency_hist23:50:002
3810092994034,4cyclictest4039626-21latency_hist22:50:003
3810083994036,3cyclictest335557-21systemd-journal21:58:101
3810078993936,2cyclictest4034440-21kworker/u8:5+events_unbound23:05:200
3810092993832,4cyclictest3949590-21latency_hist21:25:013
3810078993835,2cyclictest3949607-21kworker/u8:0+events_unbound21:45:220
3810078993734,2cyclictest3992426-21kworker/u8:2+flush-259:023:40:200
3810078993734,2cyclictest3804833-21kworker/u8:4+events_unbound19:40:210
3810078993633,2cyclictest3997819-21kworker/u8:3+flush-259:022:10:230
3810078993633,2cyclictest3850428-21kworker/u8:2+flush-259:019:55:240
3810078993632,3cyclictest3992426-21kworker/u8:2+flush-259:023:25:200
3810078993632,3cyclictest3986566-21kworker/u8:2+events_unbound21:58:020
3810078993631,3cyclictest4112555-21/usr/sbin/munin00:00:240
3810078993532,2cyclictest4086801-21kworker/u8:4+events_unbound00:15:150
3810078993532,2cyclictest3949607-21kworker/u8:0+events_unbound22:35:180
3810078993531,3cyclictest3959935-21gpgv21:35:010
3810078993531,3cyclictest3804833-21kworker/u8:4+flush-259:019:45:180
3810092993430,3cyclictest3924072-21kworker/u8:4+events_unbound21:05:213
3810083993430,3cyclictest335557-21systemd-journal21:36:071
3810083993429,4cyclictest3991524-21ntpq22:00:221
3810078993431,2cyclictest3992426-21kworker/u8:2+flush-259:023:35:220
3810078993431,2cyclictest3924072-21kworker/u8:4+flush-259:021:20:230
3810078993431,2cyclictest3877273-21kworker/u8:3+events_unbound20:15:210
3810078993430,3cyclictest3918910-21kworker/u8:2+flush-259:021:00:150
3810078993430,3cyclictest3799627-21kworker/u8:2+events_unbound19:30:140
3810078993430,3cyclictest3789757-21kworker/u8:3+events_unbound19:10:220
3810078993330,2cyclictest4102284-21kworker/u8:3+events_unbound00:20:240
3810078993330,2cyclictest4086801-21kworker/u8:4+flush-259:023:55:200
3810078993330,2cyclictest3855987-21kworker/u8:0+events_unbound20:10:210
3810092993127,3cyclictest3789757-21kworker/u8:3+flush-259:019:15:253
3810078993128,2cyclictest4143157-21kworker/u8:0+events_unbound00:30:220
3810078993128,2cyclictest4112542-21kworker/u8:2+flush-259:000:05:220
3810078993128,2cyclictest4060419-21kworker/u8:0+events_unbound23:45:220
3810078993128,2cyclictest3924072-21kworker/u8:4+events_unbound21:11:160
3810078993128,2cyclictest3789757-21kworker/u8:3+events_unbound19:20:190
3810078993127,3cyclictest3892748-21kworker/u8:1+events_unbound20:40:150
3810088993026,3cyclictest4044833-21kworker/u8:3+flush-259:023:00:252
3810088993024,4cyclictest3908409-21diskstats20:45:132
3810083993023,5cyclictest4038785-21ntpq22:45:211
3810083993023,5cyclictest4002757-21latency_hist22:15:011
3810078993027,2cyclictest3992426-21kworker/u8:2+events_unbound23:15:150
3810078993027,2cyclictest3867293-21kworker/u8:2+events_unbound20:25:180
3810078993026,3cyclictest3882495-21apt-get20:20:080
3810078993025,4cyclictest3861788-21kworker/u8:4+events_unbound20:05:200
3810078993024,4cyclictest3825693-21/usr/sbin/munin19:25:130
3810088992925,3cyclictest3887374-21kworker/u8:0+events_unbound20:50:322
3810083992925,3cyclictest507-21in:imuxsock21:35:001
3810078992926,2cyclictest3992426-21kworker/u8:2+flush-259:022:51:310
3810078992926,2cyclictest3949607-21kworker/u8:0+events_unbound22:00:150
3810078992926,2cyclictest3789757-21kworker/u8:3+events_unbound19:15:210
3810092992823,3cyclictest4112542-21kworker/u8:2+events_unbound00:10:173
3810088992823,4cyclictest3865842-21ntpq20:00:212
3810088992823,3cyclictest4008448-21base6422:20:002
3810083992823,3cyclictest335557-21systemd-journal20:51:241
3810078992824,3cyclictest3892748-21kworker/u8:1+events_unbound20:45:220
3810092992722,3cyclictest3892748-21kworker/u8:1+flush-259:020:40:213
3810092992721,4cyclictest4102483-21diskstats23:50:153
3810092992721,4cyclictest3877045-21latency_hist20:15:003
3810088992723,3cyclictest4143157-21kworker/u8:0+flush-259:000:30:002
3810083992723,3cyclictest509-21rs:main1
3810078992724,2cyclictest3992426-21kworker/u8:2+events_unbound22:25:140
3810078992724,2cyclictest3992426-21kworker/u8:2+events_unbound22:15:220
3810078992724,2cyclictest3825681-21kworker/u8:1+events_unbound20:01:090
3810078992723,3cyclictest3959951-21kworker/u8:1+flush-259:021:55:010
3810078992720,6cyclictest3840071-21ntpq19:35:200
3810092992622,3cyclictest4013596-21kworker/u8:3+events_unbound22:37:473
3810092992621,4cyclictest3877273-21kworker/u8:3+flush-259:020:35:133
3810088992622,3cyclictest3789757-21kworker/u8:3+flush-259:019:10:162
3810088992620,4cyclictest4050086-21latency_hist23:00:002
3810078992623,2cyclictest3959951-21kworker/u8:1+flush-259:022:05:190
3810078992622,3cyclictest3850428-21kworker/u8:2+events_unbound19:50:110
3810092992522,2cyclictest3892748-21kworker/u8:1+events_unbound20:30:183
3810092992521,3cyclictest3825681-21kworker/u8:1+events_unbound20:05:153
3810092992521,2cyclictest3846362-21apt-get19:45:103
3810088992519,4cyclictest3856372-21latency_hist19:55:012
3810088992519,4cyclictest335557-21systemd-journal21:30:002
3810083992521,3cyclictest335557-21systemd-journal22:32:071
3810083992518,5cyclictest4060551-21cat23:10:001
3810078992522,2cyclictest4061042-21kworker/u8:1+events_unbound23:50:230
3810078992522,2cyclictest3877273-21kworker/u8:3+events_unbound21:15:200
3810078992521,3cyclictest3949852-21apt-get21:25:100
3810078992519,5cyclictest3970697-21latency_hist21:45:010
3810092992421,2cyclictest3892748-21kworker/u8:1+events_unbound20:45:163
3810092992420,3cyclictest3992426-21kworker/u8:2+events_unbound22:10:143
3810092992420,3cyclictest3949607-21kworker/u8:0+flush-259:022:30:123
3810092992419,3cyclictest4143157-21kworker/u8:0+events_unbound00:35:153
3810083992419,4cyclictest335557-21systemd-journal21:26:071
3810083992419,4cyclictest335557-21systemd-journal21:06:071
3810083992417,6cyclictest335557-21systemd-journal19:55:011
3810078992421,2cyclictest4029462-21kworker/u8:1+flush-259:022:55:250
3810078992421,2cyclictest3949607-21kworker/u8:0+flush-259:022:20:260
3810078992419,4cyclictest3992426-21kworker/u8:2+flush-259:022:31:230
3810092992320,2cyclictest3804833-21kworker/u8:4+flush-259:019:30:053
3810092992319,3cyclictest4102284-21kworker/u8:3+flush-259:000:20:133
3810083992320,2cyclictest4013503-21kworker/u8:1+flush-259:022:25:001
3810083992317,4cyclictest4076251-21latency_hist23:25:011
3810078992320,2cyclictest3992426-21kworker/u8:2+events_unbound22:45:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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