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2026-06-13 - 12:58

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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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  Intel
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, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Sat Jun 13, 2026 00:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
289965421910,5sleep30-21swapper/300:25:353
2582537998476,5cyclictest2734609-21kworker/u8:1+flush-8:022:00:461
28954292790,5sleep20-21swapper/200:20:372
2582537997870,6cyclictest2728969-21kworker/u8:3+events_unbound21:40:451
2582537997266,4cyclictest2558222-21kworker/u8:1+events_unbound20:00:001
2582537997264,6cyclictest2758950-21kworker/u8:3+flush-8:023:20:431
2582534997066,3cyclictest1641715-21kworker/u8:0+events_unbound19:25:430
2582534996965,3cyclictest2734609-21kworker/u8:1+events_unbound22:10:280
2582534996965,3cyclictest1641715-21kworker/u8:0+events_unbound19:50:450
2582534996864,3cyclictest2558222-21kworker/u8:1+events_unbound19:40:300
2582537996762,4cyclictest2734609-21kworker/u8:1+events_unbound22:35:401
2582542996654,9cyclictest2907231-21ntpq00:30:422
2582534996662,3cyclictest2758950-21kworker/u8:3+events_unbound23:45:290
2582534996662,3cyclictest1641715-21kworker/u8:0+events_unbound19:45:380
27404092650,2sleep3471rcuc/321:45:343
2582537996559,4cyclictest2769053-21kworker/u8:0+flush-8:022:25:461
2582537996559,4cyclictest1641715-21kworker/u8:0+events_unbound20:15:441
2582534996561,3cyclictest2683954-21kworker/u8:2+events_unbound21:25:300
2582537996457,5cyclictest2758950-21kworker/u8:3+events_unbound23:35:411
2582537996456,6cyclictest2803679-21/usr/sbin/munin22:50:391
2582537996359,3cyclictest2728969-21kworker/u8:3+events_unbound21:50:391
2582537996358,3cyclictest2558222-21kworker/u8:1+flush-8:020:10:451
2582537996357,4cyclictest2683954-21kworker/u8:2+flush-8:021:55:451
2582537996356,4cyclictest2758950-21kworker/u8:3+flush-8:023:45:371
2582537996353,8cyclictest2599619-21/usr/sbin/munin19:25:361
2582534996358,4cyclictest2694052-21kworker/u8:3+flush-8:021:05:440
2582537996258,3cyclictest2558222-21kworker/u8:1+events_unbound20:05:421
2582534996257,4cyclictest2728969-21kworker/u8:3+events_unbound21:50:470
2582537996055,4cyclictest2694052-21kworker/u8:3+events_unbound21:05:421
2582537996054,5cyclictest2683954-21kworker/u8:2+flush-8:021:25:411
2582537996054,4cyclictest2769053-21kworker/u8:0+events_unbound22:45:291
2582534996056,3cyclictest2683954-21kworker/u8:2+events_unbound21:55:480
2582542995847,9cyclictest1704890-21systemd-journal19:50:412
2582537995853,3cyclictest2734609-21kworker/u8:1+flush-8:023:30:461
2582537995752,4cyclictest2734609-21kworker/u8:1+events_unbound00:25:391
2582537995747,8cyclictest2674298-21/usr/sbin/munin20:40:381
2582534995752,4cyclictest2734609-21kworker/u8:1+events_unbound22:00:490
2582537995651,4cyclictest1641715-21kworker/u8:0+flush-8:020:35:351
2582537995651,3cyclictest2758950-21kworker/u8:3+events_unbound00:00:311
2582537995548,5cyclictest1641715-21kworker/u8:0+events_unbound19:35:441
2582537995547,6cyclictest2855956-21kworker/u8:2+events_unbound00:10:501
2582534995545,8cyclictest2907180-21ntpq00:30:400
2582537995448,4cyclictest1641715-21kworker/u8:0+flush-8:020:45:411
2582537995448,4cyclictest1641715-21kworker/u8:0+flush-8:019:45:401
2582537995447,5cyclictest2803089-21kworker/u8:2+events_unbound23:05:291
2582537995446,6cyclictest2614445-21/usr/sbin/munin19:40:451
2582534995450,3cyclictest1641715-21kworker/u8:0+events_unbound20:45:330
28023932530,3chrt0-21swapper/222:45:382
2582537995349,3cyclictest2855956-21kworker/u8:2+flush-8:023:55:421
2582537995349,3cyclictest2683954-21kworker/u8:2+flush-8:021:00:441
2582537995349,3cyclictest2683954-21kworker/u8:2+events_unbound21:10:411
2582537995348,3cyclictest1641715-21kworker/u8:0+events_unbound20:00:441
2582537995347,4cyclictest2855956-21kworker/u8:2+flush-8:000:05:511
2582537995346,6cyclictest2703950-21kworker/u8:0+flush-8:021:15:421
2582537995346,5cyclictest2769053-21kworker/u8:0+events_unbound22:15:401
2582534995349,3cyclictest2683954-21kworker/u8:2+events_unbound21:15:030
2582534995344,4cyclictest2769053-21kworker/u8:0+events_unbound22:15:320
2582534995342,8cyclictest2724290-21/usr/sbin/munin21:30:360
2582537995247,3cyclictest1641715-21kworker/u8:0+flush-8:019:50:361
2582537995245,4cyclictest2703950-21kworker/u8:0+flush-8:021:30:311
2582534995248,3cyclictest2558222-21kworker/u8:1+events_unbound19:20:350
2582537995144,6cyclictest2558222-21kworker/u8:1+flush-8:020:25:411
2582542995044,4cyclictest2758950-21kworker/u8:3+flush-8:023:10:452
2582537995046,3cyclictest2758950-21kworker/u8:3+events_unbound22:05:441
2582537995046,3cyclictest2728969-21kworker/u8:3+events_unbound21:35:421
2582537995045,3cyclictest2803089-21kworker/u8:2+flush-8:023:15:451
2582534995046,3cyclictest2558222-21kworker/u8:1+events_unbound20:05:490
2582537994944,4cyclictest2855956-21kworker/u8:2+flush-8:000:20:421
2582537994944,3cyclictest1641715-21kworker/u8:0+flush-8:020:55:351
2582537994943,5cyclictest2728969-21kworker/u8:3+events_unbound21:45:411
2582534994945,3cyclictest2848010-21kworker/u8:0+events_unbound00:13:440
2582534994945,3cyclictest2758950-21kworker/u8:3+events_unbound22:20:470
2582542994843,3cyclictest2558222-21kworker/u8:1+events_unbound20:30:472
2582537994843,3cyclictest2758950-21kworker/u8:3+events_unbound23:00:451
2582534994844,3cyclictest2758950-21kworker/u8:3+events_unbound23:00:320
2582534994840,6cyclictest2823461-21apt-get23:10:030
2582534994840,3cyclictest2683954-21kworker/u8:2+events_unbound21:01:390
2582534994835,9cyclictest2873435-21cp00:00:000
2582537994743,3cyclictest2769053-21kworker/u8:0+events_unbound22:20:331
2582537994743,3cyclictest2558222-21kworker/u8:1+flush-8:020:50:301
2582537994742,3cyclictest2758950-21kworker/u8:3+events_unbound22:55:301
2582537994742,3cyclictest2558222-21kworker/u8:1+events_unbound19:35:011
2582537994740,5cyclictest2863484-21/usr/sbin/munin23:50:371
2582534994742,4cyclictest1641715-21kworker/u8:0+events_unbound19:57:410
2582542994642,3cyclictest2855956-21kworker/u8:2+events_unbound00:00:492
2582537994641,4cyclictest2769053-21kworker/u8:0+events_unbound22:40:271
2582534994642,3cyclictest2803089-21kworker/u8:2+events_unbound23:05:480
2582534994642,3cyclictest2734609-21kworker/u8:1+events_unbound00:36:430
2582534994637,7cyclictest2792670-21ntpq22:35:380
2582534994635,8cyclictest2857605-21python323:40:450
2582537994539,4cyclictest2848010-21kworker/u8:0+events_unbound23:40:291
2582537994539,4cyclictest2558222-21kworker/u8:1+events_unbound20:20:301
2582537994537,6cyclictest2558222-21kworker/u8:1+flush-8:019:15:421
2582534994541,3cyclictest2848010-21kworker/u8:0+events_unbound00:08:120
2582534994540,4cyclictest1641715-21kworker/u8:0+events_unbound20:18:400
2582537994434,8cyclictest2767661-21ntpq22:10:371
2582534994440,3cyclictest2758950-21kworker/u8:3+events_unbound23:17:390
2582534994440,3cyclictest2758950-21kworker/u8:3+events_unbound22:05:480
2582534994440,3cyclictest2743491-21kworker/u8:0+events_unbound21:48:380
2582534994440,3cyclictest2734609-21kworker/u8:1+events_unbound23:25:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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