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2026-10-11 - 15:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #8

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 rackeslot8s.osadl.org (updated Sun Oct 11, 2026 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37549512650,2sleep10-21swapper/11
3464037992421,1cyclictest0-21swapper/33
3464037992118,1cyclictest0-21swapper/33
3464037992017,1cyclictest0-21swapper/33
3464037992017,1cyclictest0-21swapper/33
3464037992017,1cyclictest0-21swapper/33
3464037992016,1cyclictest0-21swapper/33
3464037991916,1cyclictest0-21swapper/33
3464037991815,1cyclictest0-21swapper/33
3464037991814,2cyclictest0-21swapper/33
346403799181,12cyclictest3554904-21sleep3
346403799178,6cyclictest3625930-21sleep3
346403799172,11cyclictest3853946-21taskset3
346403799172,11cyclictest3786915-21taskset3
3464037991714,1cyclictest0-21swapper/33
3464037991714,1cyclictest0-21swapper/33
346403799171,13cyclictest3497757-21turbostat3
346403799171,12cyclictest3717487-21taskset3
346403799171,11cyclictest3902214-21turbostat3
346403799171,11cyclictest3509789-21taskset3
346403799171,11cyclictest3501889-21taskset3
346403799166,7cyclictest34716592sleep33
346403799165,8cyclictest36390822sleep33
346403799162,11cyclictest0-21swapper/33
346403799162,10cyclictest3740835-21taskset3
3464037991613,1cyclictest0-21swapper/33
3464037991613,1cyclictest0-21swapper/33
3464037991613,1cyclictest0-21swapper/33
3464037991613,1cyclictest0-21swapper/33
3464037991612,1cyclictest0-21swapper/33
3464037991612,1cyclictest0-21swapper/33
346403799161,11cyclictest3932918-21taskset3
346403799161,11cyclictest3908388-21taskset3
346403799161,11cyclictest3801063-21taskset3
346403799161,11cyclictest3701959-21taskset3
346403799161,11cyclictest3687307-21taskset3
346403799161,11cyclictest3649614-21taskset3
346403799161,11cyclictest3618223-21sleep3
346403799161,10cyclictest3787427-21chrt3
346403799161,10cyclictest3580498-21taskset3
346403799152,9cyclictest3724722-21taskset3
346403799152,9cyclictest3541317-21taskset3
346403799152,8cyclictest3656902-21taskset3
346403799152,8cyclictest3656902-21taskset3
346403799152,11cyclictest0-21swapper/33
3464037991512,1cyclictest0-21swapper/33
3464037991512,1cyclictest0-21swapper/33
3464037991512,1cyclictest0-21swapper/33
3464037991512,1cyclictest0-21swapper/33
346403799151,10cyclictest3923993-21taskset3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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