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2025-11-27 - 22:29

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 Nov 27, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1729992118,2cyclictest55650irq/125-lan09:25:371
1729992019,1cyclictest55650irq/125-lan11:19:151
1729992018,1cyclictest55650irq/125-lan10:45:141
1729992017,2cyclictest55650irq/125-lan11:30:111
1729991918,1cyclictest55650irq/125-lan12:39:141
1729991918,1cyclictest55650irq/125-lan12:24:131
1729991918,1cyclictest55650irq/125-lan12:18:161
1729991918,1cyclictest55650irq/125-lan11:56:351
1729991918,1cyclictest55650irq/125-lan11:52:381
1729991918,1cyclictest55650irq/125-lan11:38:471
1729991918,1cyclictest55650irq/125-lan11:26:331
1729991918,1cyclictest55650irq/125-lan11:20:201
1729991918,1cyclictest55650irq/125-lan10:55:181
1729991918,1cyclictest55650irq/125-lan10:53:541
1729991918,1cyclictest55650irq/125-lan10:28:021
1729991918,1cyclictest55650irq/125-lan10:00:301
1729991918,1cyclictest55650irq/125-lan09:35:371
1729991918,1cyclictest55650irq/125-lan09:17:501
1729991917,1cyclictest55650irq/125-lan09:10:351
1729991818,0cyclictest55650irq/125-lan10:13:131
1729991818,0cyclictest55650irq/125-lan09:46:151
1729991818,0cyclictest55650irq/125-lan09:22:071
1729991817,1cyclictest55650irq/125-lan12:30:031
1729991817,1cyclictest55650irq/125-lan12:25:171
1729991817,1cyclictest55650irq/125-lan12:05:101
1729991817,1cyclictest55650irq/125-lan12:00:341
1729991817,1cyclictest55650irq/125-lan11:46:441
1729991817,1cyclictest55650irq/125-lan11:42:161
1729991817,1cyclictest55650irq/125-lan11:10:171
1729991817,1cyclictest55650irq/125-lan11:05:201
1729991817,1cyclictest55650irq/125-lan11:00:231
1729991817,1cyclictest55650irq/125-lan10:37:031
1729991817,1cyclictest55650irq/125-lan10:34:561
1729991817,1cyclictest55650irq/125-lan10:20:071
1729991817,1cyclictest55650irq/125-lan10:16:241
1729991817,1cyclictest55650irq/125-lan10:06:271
1729991817,1cyclictest55650irq/125-lan10:06:261
1729991817,1cyclictest55650irq/125-lan09:55:371
1729991817,1cyclictest55650irq/125-lan09:40:161
1729991817,1cyclictest55650irq/125-lan09:30:201
1729991817,1cyclictest55650irq/125-lan08:22:101
1729991817,1cyclictest55650irq/125-lan08:19:121
1729991817,1cyclictest55650irq/125-lan08:03:491
1729991817,1cyclictest55650irq/125-lan07:34:241
1729991817,1cyclictest55650irq/125-lan07:25:401
1729991817,1cyclictest55650irq/125-lan07:24:201
1729991817,1cyclictest55650irq/125-lan07:16:031
1729991717,0cyclictest55650irq/125-lan12:10:501
1729991717,0cyclictest55650irq/125-lan09:50:051
1729991717,0cyclictest55650irq/125-lan07:11:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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