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2026-04-18 - 10:01

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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.

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 20 highest latencies:
System rackbslot5s.osadl.org (updated Sat Apr 18, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2856504995931,4cyclictest2907104-21idleruntime-cro21:34:593
2856498995850,5cyclictest2961260-21kworker/u8:0+events_unbound00:33:522
2856498995850,5cyclictest2961260-21kworker/u8:0+events_unbound00:33:522
2856489995020,27cyclictest0-21swapper/022:10:000
2856489994939,6cyclictest2939710-21grep23:05:270
2856489994924,20cyclictest0-21swapper/022:05:000
2856489994824,21cyclictest0-21swapper/023:40:120
2856489994817,3cyclictest0-21swapper/000:05:000
2856489994817,3cyclictest0-21swapper/000:05:000
2856489994722,3cyclictest0-21swapper/020:00:010
2856489994714,5cyclictest0-21swapper/020:10:010
285648999471,3cyclictest2901082-21ntp_states21:15:220
2856489994523,19cyclictest2964022-21unixbench_singl00:15:270
2856489994513,6cyclictest0-21swapper/000:14:590
2856489994334,6cyclictest2925831-21grep22:25:250
2856504994231,7cyclictest2957404-21grep23:59:593
2856504994231,7cyclictest2957404-21grep00:00:003
2856498994229,9cyclictest2903250-21grep21:20:252
2856504994130,7cyclictest2913508-21grep21:50:253
2856498994133,5cyclictest2919248-21sh22:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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