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2025-07-08 - 22:40

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #7

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.
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 rackfslot7s.osadl.org (updated Tue Jul 08, 2025 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13292099361319,3589cyclictest166788-21kworker/2:0+events21:05:012
13292099326216,3242cyclictest159958-21kworker/2:2+events20:35:242
13292099307015,3049cyclictest185705-21kworker/2:0+events22:10:152
13290999294813,2933cyclictest214650-21kworker/0:1+events23:30:210
13292099280813,2791cyclictest152129-21kworker/2:1+events20:10:192
13292499280713,2791cyclictest209890-21kworker/3:2+events23:15:013
13292099279912,2783cyclictest159958-21kworker/2:2+events20:40:192
13292499277313,2756cyclictest168313-21kworker/3:1+events21:10:193
13292499277013,2753cyclictest213088-21kworker/3:1+events23:40:183
13291799276612,2752cyclictest233761-21kworker/1:0+events00:25:101
13290999274214,2723cyclictest136552-21kworker/0:2+events19:25:150
13291799271611,2700cyclictest181047-21kworker/1:2+events21:40:121
13292499270112,2684cyclictest225799-21kworker/3:2+events00:00:193
13292099264013,2623cyclictest172851-21kworker/2:0+events21:12:362
13290999262513,2608cyclictest143728-21kworker/0:1+events20:25:200
13292099260312,2587cyclictest142698-21kworker/2:0+events19:39:242
13290999257812,2563cyclictest155778-21kworker/0:2+events20:21:530
13292099257212,2556cyclictest153788-21kworker/2:2+events20:22:152
13292499257112,2555cyclictest190753-21kworker/3:0+events22:12:343
13291799256912,2553cyclictest217846-21kworker/1:0+events23:58:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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