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2026-08-01 - 20:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, 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 rack8slot6s.osadl.org (updated Sat Aug 01, 2026 12:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
347991918,1cyclictest65850irq/126-lan11:50:110
347991918,1cyclictest65850irq/126-lan10:01:030
347991818,0cyclictest65850irq/126-lan11:35:210
347991817,1cyclictest65850irq/126-lan12:31:020
347991817,1cyclictest65850irq/126-lan12:20:170
347991817,1cyclictest65850irq/126-lan11:30:140
347991817,1cyclictest65850irq/126-lan11:00:000
347991817,1cyclictest65850irq/126-lan10:10:210
347991817,1cyclictest65850irq/126-lan09:45:140
347991817,1cyclictest65850irq/126-lan08:10:210
347991717,0cyclictest65850irq/126-lan11:29:460
347991717,0cyclictest65850irq/126-lan10:37:420
347991717,0cyclictest65850irq/126-lan09:13:020
347991717,0cyclictest65850irq/126-lan08:07:250
347991716,1cyclictest65850irq/126-lan10:45:540
347991716,1cyclictest65850irq/126-lan10:25:190
347991716,1cyclictest65850irq/126-lan09:30:140
347991716,1cyclictest65850irq/126-lan08:45:130
347991716,1cyclictest65850irq/126-lan08:00:170
347991716,1cyclictest65850irq/126-lan07:10:180
347991616,0cyclictest65850irq/126-lan10:53:030
347991615,1cyclictest65850irq/126-lan12:35:120
347991615,1cyclictest65850irq/126-lan11:55:150
347991615,1cyclictest65850irq/126-lan11:22:210
347991615,1cyclictest65850irq/126-lan11:15:150
347991615,1cyclictest65850irq/126-lan11:05:140
347991615,1cyclictest65850irq/126-lan11:00:170
347991615,1cyclictest65850irq/126-lan10:31:030
347991615,1cyclictest65850irq/126-lan10:05:160
347991615,1cyclictest65850irq/126-lan10:05:150
347991615,1cyclictest65850irq/126-lan09:50:140
347991615,1cyclictest65850irq/126-lan09:35:130
347991615,1cyclictest65850irq/126-lan09:00:200
347991615,1cyclictest65850irq/126-lan08:40:150
347991615,1cyclictest65850irq/126-lan08:15:210
347991615,1cyclictest65850irq/126-lan07:30:120
347991515,0cyclictest65850irq/126-lan12:29:020
347991515,0cyclictest65850irq/126-lan10:20:190
347991515,0cyclictest65850irq/126-lan07:45:060
347991514,1cyclictest65850irq/126-lan12:15:140
347991514,1cyclictest65850irq/126-lan12:10:160
347991514,1cyclictest65850irq/126-lan12:05:140
347991514,1cyclictest65850irq/126-lan12:00:180
347991514,1cyclictest65850irq/126-lan10:15:210
347991414,0cyclictest65850irq/126-lan10:40:190
347991414,0cyclictest65850irq/126-lan07:21:020
347991413,1cyclictest65850irq/126-lan09:55:290
347991413,1cyclictest65850irq/126-lan08:55:220
347991413,1cyclictest65850irq/126-lan07:40:230
347991313,0cyclictest65850irq/126-lan11:45:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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