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2025-08-21 - 21:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, 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 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 rack8slot7s.osadl.org (updated Thu Aug 21, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19305992318,5cyclictest55650irq/125-lan11:42:340
19305992316,3cyclictest55650irq/125-lan09:05:380
19305992119,2cyclictest55650irq/125-lan09:02:580
19305992117,4cyclictest55650irq/125-lan11:50:190
19305992117,4cyclictest55650irq/125-lan10:46:510
19305992019,1cyclictest55650irq/125-lan12:31:140
19305992018,2cyclictest55650irq/125-lan09:51:480
19305992018,2cyclictest55650irq/125-lan08:41:090
19305992017,3cyclictest55650irq/125-lan09:22:010
19305992017,2cyclictest55650irq/125-lan10:30:020
19305992017,2cyclictest55650irq/125-lan09:41:310
19305992015,2cyclictest55650irq/125-lan09:38:440
19305991919,0cyclictest55650irq/125-lan07:27:320
19305991918,1cyclictest55650irq/125-lan12:22:190
19305991918,1cyclictest55650irq/125-lan12:01:000
19305991918,1cyclictest55650irq/125-lan11:28:240
19305991918,1cyclictest55650irq/125-lan11:18:380
19305991918,1cyclictest55650irq/125-lan10:57:170
19305991918,1cyclictest55650irq/125-lan10:40:490
19305991918,1cyclictest55650irq/125-lan10:09:400
19305991918,1cyclictest55650irq/125-lan10:04:550
19305991918,1cyclictest55650irq/125-lan09:30:580
19305991918,1cyclictest55650irq/125-lan09:27:450
19305991918,1cyclictest55650irq/125-lan08:53:370
19305991917,2cyclictest55650irq/125-lan12:15:130
19305991917,2cyclictest55650irq/125-lan08:10:250
19305991917,2cyclictest55650irq/125-lan07:49:320
19305991917,1cyclictest55650irq/125-lan12:12:240
19305991917,1cyclictest55650irq/125-lan12:05:550
19305991917,1cyclictest55650irq/125-lan11:30:470
19305991916,3cyclictest55650irq/125-lan11:10:300
19305991817,1cyclictest55650irq/125-lan12:28:500
19305991817,1cyclictest55650irq/125-lan11:36:420
19305991817,1cyclictest55650irq/125-lan11:20:140
19305991817,1cyclictest55650irq/125-lan11:05:270
19305991817,1cyclictest55650irq/125-lan11:01:470
19305991817,1cyclictest55650irq/125-lan10:51:210
19305991817,1cyclictest55650irq/125-lan10:37:290
19305991817,1cyclictest55650irq/125-lan10:27:270
19305991817,1cyclictest55650irq/125-lan10:20:450
19305991817,1cyclictest55650irq/125-lan10:10:350
19305991817,1cyclictest55650irq/125-lan09:55:320
19305991817,1cyclictest55650irq/125-lan09:46:470
19305991817,1cyclictest55650irq/125-lan09:10:070
19305991817,1cyclictest55650irq/125-lan08:59:310
19305991817,1cyclictest55650irq/125-lan08:05:390
19305991817,1cyclictest55650irq/125-lan07:55:240
19305991817,1cyclictest55650irq/125-lan07:30:190
19305991817,1cyclictest55650irq/125-lan07:16:130
19305991817,1cyclictest55650irq/125-lan07:14:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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