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2026-07-01 - 23:51
OSADL QA Farm

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 Wed Jul 01, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
412008299142131,8cyclictest16042-21latency_hist11:50:010
412008399135125,8cyclictest4155030-21latency_hist09:00:011
412008299122116,4cyclictest4171255-21kworker/u8:3+events_unbound10:00:000
41200839912097,21cyclictest4155301-21apt-get09:00:121
412008399120110,7cyclictest4147307-21kworker/u8:4+flush-179:009:15:001
412008299119109,7cyclictest4189003-21latency_hist10:45:010
412008299118107,8cyclictest4193739-21kworker/u8:0+events_unbound12:05:240
412008299118107,8cyclictest4193739-21kworker/u8:0+events_unbound12:05:240
412008299114109,4cyclictest4147307-21kworker/u8:4+flush-179:008:55:280
41200829911297,11cyclictest4156631-21latency_hist09:05:010
412008299112102,7cyclictest4190588-21latency_hist10:50:000
412008299112100,9cyclictest4139111-21latency_hist08:10:000
41200829911195,12cyclictest510-21rs:main0
41200829910792,5cyclictest27437-21kworker/u8:1+events_unbound12:25:150
41200829910697,6cyclictest4103576-21kworker/u8:0+events_unbound07:20:210
41200829910599,4cyclictest4163267-21kworker/u8:1+flush-179:009:25:260
41200829910499,4cyclictest4189239-21kworker/u8:2+flush-179:011:10:240
41200839910293,6cyclictest4163298-21kworker/u8:2+flush-179:009:55:161
41200829910297,4cyclictest4163267-21kworker/u8:1+flush-179:009:45:230
41200829910291,8cyclictest4193739-21kworker/u8:0+flush-179:011:40:230
4120083999991,5cyclictest6499-21latency_hist11:20:021
4120082999993,4cyclictest4128466-21kworker/u8:0+flush-179:007:55:240
4120082999991,5cyclictest4193739-21kworker/u8:0+events_unbound12:00:190
4120082999990,6cyclictest4193739-21kworker/u8:0+events_unbound12:10:200
4120082999893,4cyclictest4163298-21kworker/u8:2+flush-179:009:40:240
4120082999793,3cyclictest4193739-21kworker/u8:0+events_unbound12:15:250
4120082999792,4cyclictest4140730-21kworker/u8:2+events_unbound08:20:250
4120082999792,3cyclictest4171255-21kworker/u8:3+flush-179:010:00:200
4120082999689,6cyclictest4147307-21kworker/u8:4+events_unbound09:05:020
4120082999590,4cyclictest4140730-21kworker/u8:2+flush-179:008:25:220
4120082999586,7cyclictest4103576-21kworker/u8:0+events_unbound07:20:010
4120082999582,10cyclictest4129559-21latency_hist07:40:020
4120082999582,10cyclictest4129559-21latency_hist07:40:010
4120083999383,8cyclictest26125-21apt-get12:20:111
4120083999379,10cyclictest1213033-21systemd-journal12:20:011
4120082999388,4cyclictest4163298-21kworker/u8:2+flush-179:010:10:240
4120083999283,6cyclictest4171255-21kworker/u8:3+flush-179:010:05:261
4120083999184,5cyclictest4193739-21kworker/u8:0+events_unbound11:20:231
4120083999184,5cyclictest4193739-21kworker/u8:0+events_unbound11:20:221
4120083999173,9cyclictest4184209-21kworker/u8:1+events_unbound10:30:011
4120082999182,6cyclictest4189239-21kworker/u8:2+events_unbound11:00:190
4120082999079,7cyclictest3040-21latency_hist11:10:010
4120083998979,8cyclictest4186063-21apt-get10:35:121
4120083998978,9cyclictest4139367-21apt-get08:10:121
4120082998883,4cyclictest4163298-21kworker/u8:2+events_unbound10:20:220
4120082998876,9cyclictest4140730-21kworker/u8:2+flush-179:008:45:210
4120082998782,4cyclictest9708-21kworker/u8:1+flush-179:011:50:230
4120082998780,5cyclictest4119950-21kworker/u8:2+flush-179:007:10:200
4120082998681,3cyclictest4140730-21kworker/u8:2+flush-179:008:50:220
4120082998580,3cyclictest4171255-21kworker/u8:3+flush-179:010:15:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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