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2026-06-16 - 03:48
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 Tue Jun 16, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
402735599126115,8cyclictest4120413-40mandb00:00:010
402735599121113,6cyclictest4037369-21kworker/u8:2+events_unbound20:00:010
402735599120112,6cyclictest4028933-21kworker/u8:1+events_unbound20:25:000
402735899116110,4cyclictest4068947-21kworker/u8:2+flush-179:021:45:221
402735599114108,5cyclictest4095666-21kworker/u8:0+flush-179:022:45:000
402735599111106,4cyclictest4065809-21kworker/u8:0+flush-179:021:40:240
40273589911093,8cyclictest4126785-21kworker/u8:1+events_unbound00:20:001
402735599110103,5cyclictest4081902-21kworker/u8:1+events_unbound22:05:240
402735599110103,5cyclictest4028933-21kworker/u8:1+events_unbound19:30:240
402735899109102,5cyclictest4108973-21kworker/u8:1+flush-179:000:00:221
40273589910798,6cyclictest4028933-21kworker/u8:1+events_unbound20:30:231
40273589910791,7cyclictest4068947-21kworker/u8:2+events_unbound21:55:231
402735899107101,4cyclictest2897312-21kworker/u8:3+flush-179:019:40:211
402735899107100,4cyclictest4091474-21kworker/u8:1+flush-179:022:55:261
402735899107100,4cyclictest4091474-21kworker/u8:1+flush-179:022:55:261
40273559910797,4cyclictest4046712-21kworker/u8:3+events_unbound20:10:260
402735599107102,4cyclictest4053698-21kworker/u8:2+flush-179:020:40:230
40273589910698,5cyclictest4095666-21kworker/u8:0+flush-179:022:40:261
40273559910698,6cyclictest4114031-21latency_hist23:40:000
40273559910692,10cyclictest4113999-21kworker/u8:0+flush-179:000:00:170
40273589910493,8cyclictest4060966-21kworker/u8:1+flush-179:021:00:191
40273589910388,13cyclictest4108973-21kworker/u8:1+flush-179:023:45:241
40273559910297,4cyclictest4097884-21kworker/u8:3+events_unbound23:20:240
40273559910293,6cyclictest4099434-21latency_hist22:55:010
40273559910291,4cyclictest4097884-21kworker/u8:3+events_unbound23:15:240
40273589910189,5cyclictest4113999-21kworker/u8:0+events_unbound23:55:251
40273589910092,6cyclictest4028933-21kworker/u8:1+events_unbound20:15:231
40273559910095,4cyclictest4060966-21kworker/u8:1+events_unbound21:05:230
4027355999994,4cyclictest4084554-21kworker/u8:2+flush-179:022:10:240
4027355999989,7cyclictest4067605-21apt-get21:15:120
4027358999792,3cyclictest4110546-21kworker/u8:2+flush-179:023:30:251
4027355999789,4cyclictest4060966-21kworker/u8:1+events_unbound20:55:250
4027355999690,5cyclictest4118824-21kworker/u8:3+events_unbound00:35:240
4027355999690,4cyclictest4128386-21kworker/u8:2+flush-179:000:25:200
4027355999690,4cyclictest4037369-21kworker/u8:2+flush-179:020:05:220
4027355999688,6cyclictest4028933-21kworker/u8:1+events_unbound19:25:120
4027355999688,6cyclictest4028933-21kworker/u8:1+events_unbound19:25:120
4027355999688,5cyclictest2897312-21kworker/u8:3+events_unbound19:40:130
4027358999487,5cyclictest4086735-21kworker/u8:3+flush-179:022:20:001
4027358999480,11cyclictest1213033-21systemd-journal23:25:001
4027355999485,7cyclictest4108973-21kworker/u8:1+events_unbound23:40:140
4027355999484,7cyclictest4089899-21latency_hist22:25:010
4027355999384,6cyclictest4068947-21kworker/u8:2+flush-179:021:30:260
4027358999284,6cyclictest4093071-21latency_hist22:35:011
4027355999287,4cyclictest4124273-21kworker/u8:0+flush-179:000:15:230
4027355999287,4cyclictest4095666-21kworker/u8:0+flush-179:023:05:250
4027355999286,4cyclictest4081902-21kworker/u8:1+events_unbound22:00:180
4027355999286,4cyclictest4068947-21kworker/u8:2+flush-179:021:25:160
4027355999283,3cyclictest4028933-21kworker/u8:1+events_unbound20:35:250
4027355999085,4cyclictest4091529-21kworker/u8:2+flush-179:022:30:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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