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2026-05-03 - 15:50
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 Sun May 03, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
205907099115107,6cyclictest2136157-21kworker/u8:1+events_unbound12:10:000
205907099110102,6cyclictest2112302-21latency_hist09:55:000
205907099108102,4cyclictest2114667-21kworker/u8:0+events_unbound10:20:000
20590709910696,7cyclictest2104348-21latency_hist09:30:000
2059070999993,4cyclictest2098944-21kworker/u8:1+flush-179:009:25:020
2059073999660,26cyclictest2074925-21latency_hist08:00:001
2059070999287,4cyclictest2136157-21kworker/u8:1+events_unbound12:00:000
2059070999182,6cyclictest2143425-21kworker/u8:2+flush-179:011:45:000
2059070998777,7cyclictest2079664-21kworker/u8:0+flush-179:008:30:150
2059073998471,9cyclictest2105920-21kworker/u8:3+flush-179:009:50:001
2059070998479,4cyclictest2065316-21kworker/u8:2+flush-179:007:35:240
2059070998477,5cyclictest2136157-21kworker/u8:1+flush-179:011:55:000
2059073998368,12cyclictest2091107-21apt-get08:50:001
2059070998377,4cyclictest2127188-21kworker/u8:3+events_unbound11:00:240
2059070998377,4cyclictest2127188-21kworker/u8:3+events_unbound11:00:230
2059070998377,4cyclictest2127188-21kworker/u8:3+events_unbound10:45:250
2059070998273,6cyclictest2136157-21kworker/u8:1+flush-179:011:10:140
2059070998175,4cyclictest2039482-21kworker/u8:2+events_unbound07:15:000
2059070998075,4cyclictest2096145-21apt-get09:05:020
2059070997969,8cyclictest2141752-21apt-get11:21:570
2059070997873,4cyclictest2104887-21kworker/u8:0+flush-179:009:30:240
2059070997661,11cyclictest2089541-21kworker/u8:3+flush-179:008:45:010
2059070997572,2cyclictest1-21systemd11:30:000
2059070997566,6cyclictest2127131-21kworker/u8:2+flush-179:010:50:150
2059070997466,5cyclictest2160946-21kworker/u8:1+flush-179:012:35:220
2059070997463,8cyclictest2139915-21latency_hist11:20:000
2059073997364,7cyclictest2154522-21kworker/u8:3+events_unbound12:05:001
2059073997363,7cyclictest2141721-21kworker/u8:3+events_unbound11:29:591
2059070997367,4cyclictest2114159-21latency_hist10:00:020
2059070997363,7cyclictest2044263-21kworker/u8:3+flush-179:007:15:210
2059070997266,4cyclictest2065316-21kworker/u8:2+events_unbound07:40:250
2059070997265,6cyclictest2083120-21kworker/u8:2+flush-179:009:15:000
2059070997167,3cyclictest2114667-21kworker/u8:0+flush-179:010:05:000
2059070997154,3cyclictest2143425-21kworker/u8:2+events_unbound11:40:010
2059070997056,11cyclictest1213033-21systemd-journal08:10:000
2059073996959,7cyclictest2096145-21apt-get09:04:591
2059070996963,4cyclictest2112285-21kworker/u8:1+events_unbound10:25:150
2059073996761,4cyclictest2127131-21kworker/u8:2+events_unbound10:45:001
2059073996756,8cyclictest2097978-21latency_hist09:10:001
2059073996755,10cyclictest2119449-21apt-get10:15:111
2059073996748,16cyclictest2044263-21kworker/u8:3+flush-179:007:15:251
2059070996758,6cyclictest2125538-21kworker/u8:0+flush-179:010:35:160
2059070996758,6cyclictest2125538-21kworker/u8:0+flush-179:010:35:160
2059074996663,2cyclictest0-21swapper/212:37:592
2059073996651,12cyclictest2136157-21kworker/u8:1+flush-179:011:55:231
2059070996662,3cyclictest2079664-21kworker/u8:0+flush-179:008:15:190
2059073996560,3cyclictest2079664-21kworker/u8:0+events_unbound08:25:211
2059070996559,5cyclictest2068521-21kworker/u8:1+events_unbound07:50:010
2059070996559,4cyclictest2154522-21kworker/u8:3+events_unbound12:25:000
2059070996558,4cyclictest2141721-21kworker/u8:3+flush-179:011:30:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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