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2026-07-12 - 20:32
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OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #e, slot #6

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 50 highest latencies:
System rackeslot6.osadl.org (updated Sun Jul 12, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
30077499132126,4cyclictest390107-21kworker/u8:0+flush-179:012:30:141
30077099125118,6cyclictest374869-21kworker/u8:2+flush-179:011:20:000
30077099124117,5cyclictest327405-21kworker/u8:2+events_unbound08:35:250
30077099123117,5cyclictest305636-21kworker/u8:2+events_unbound07:55:230
30077099123117,5cyclictest297744-21kworker/u8:0+events_unbound07:10:040
30077499121107,10cyclictest350433-21latency_hist09:40:001
30077099121115,5cyclictest285205-21kworker/u8:3+events_unbound07:15:250
30077499118105,9cyclictest333740-21latency_hist08:50:011
30077099115109,5cyclictest402448-21kworker/u8:2+events_unbound12:30:000
30077499111104,5cyclictest361797-21kworker/u8:3+flush-179:010:15:161
30077099110105,4cyclictest352328-21kworker/u8:3+flush-179:009:50:240
30077099110104,4cyclictest317965-21kworker/u8:0+events_unbound08:25:190
30077099109104,4cyclictest332131-21kworker/u8:0+flush-179:009:15:150
30077099108103,3cyclictest300595-21kworker/u8:1+events_unbound07:35:190
3007709910599,4cyclictest332131-21kworker/u8:0+events_unbound08:50:220
3007709910595,7cyclictest341983-21kworker/u8:1+flush-179:009:30:160
3007709910393,4cyclictest337228-21kworker/u8:3+events_unbound09:05:230
3007749910291,8cyclictest305636-21kworker/u8:2+flush-179:008:00:161
3007709910297,4cyclictest402448-21kworker/u8:2+flush-179:012:30:250
3007709910297,4cyclictest317965-21kworker/u8:0+events_unbound08:30:240
3007709910297,3cyclictest374869-21kworker/u8:2+events_unbound11:00:170
3007749910186,12cyclictest327405-21kworker/u8:2+flush-179:008:35:011
3007709910196,4cyclictest317965-21kworker/u8:0+flush-179:008:05:240
3007709910095,4cyclictest386224-21kworker/u8:1+flush-179:011:50:240
300774999980,8cyclictest390107-21kworker/u8:0+events_unbound12:35:151
300770999994,4cyclictest309080-21kworker/u8:3+events_unbound07:50:260
300770999892,4cyclictest305636-21kworker/u8:2+flush-179:007:30:210
300774999791,4cyclictest387557-21kworker/u8:3+flush-179:011:35:161
300774999789,5cyclictest394438-21kworker/u8:2+flush-179:012:00:161
300774999786,8cyclictest510-21rs:main1
300774999786,8cyclictest510-21rs:main1
300770999792,4cyclictest366664-21kworker/u8:2+events_unbound10:35:260
300770999687,3cyclictest366664-21kworker/u8:2+events_unbound10:40:250
300774999589,4cyclictest300595-21kworker/u8:1+events_unbound07:20:011
300770999589,4cyclictest379647-21kworker/u8:0+events_unbound11:20:030
300774999486,6cyclictest317965-21kworker/u8:0+flush-179:008:30:001
300770999489,4cyclictest394438-21kworker/u8:2+events_unbound12:00:250
300770999489,4cyclictest327405-21kworker/u8:2+flush-179:008:45:250
300770999388,4cyclictest309080-21kworker/u8:3+flush-179:007:45:200
300774999258,2cyclictest0-21swapper/111:04:001
300770999288,3cyclictest332131-21kworker/u8:0+flush-179:009:35:260
300770999288,3cyclictest320723-21kworker/u8:1+events_unbound08:20:230
300770999187,3cyclictest348719-21kworker/u8:2+flush-179:010:00:250
300770999186,4cyclictest327405-21kworker/u8:2+flush-179:008:40:270
300770999181,8cyclictest402448-21kworker/u8:2+flush-179:012:20:160
300774999083,5cyclictest309080-21kworker/u8:3+events_unbound07:45:011
300774999068,16cyclictest317965-21kworker/u8:0+flush-179:008:05:151
300774998980,7cyclictest385985-21latency_hist11:30:001
300770998984,4cyclictest361816-21kworker/u8:4+events_unbound10:50:130
300774998877,8cyclictest1213033-21systemd-journal10:30:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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