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2025-01-25 - 06:29

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 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 Jan 25, 2025 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24955993535,0cyclictest32517-21fwupd22:24:530
24970991919,0cyclictest65850irq/126-lan21:55:253
24970991919,0cyclictest65850irq/126-lan21:37:253
24970991918,1cyclictest65850irq/126-lan22:20:223
24970991918,1cyclictest65850irq/126-lan21:40:123
24970991918,1cyclictest65850irq/126-lan19:53:113
24970991818,0cyclictest65850irq/126-lan23:03:173
24970991818,0cyclictest65850irq/126-lan22:51:283
24970991818,0cyclictest65850irq/126-lan20:50:023
24970991817,1cyclictest65850irq/126-lan23:58:303
24970991817,1cyclictest65850irq/126-lan23:52:373
24970991817,1cyclictest65850irq/126-lan23:48:283
24970991817,1cyclictest65850irq/126-lan22:31:453
24970991817,1cyclictest65850irq/126-lan22:27:353
24970991817,1cyclictest65850irq/126-lan22:13:013
24970991817,1cyclictest65850irq/126-lan22:06:103
24970991817,1cyclictest65850irq/126-lan21:49:473
24970991817,1cyclictest65850irq/126-lan21:30:113
24970991817,1cyclictest65850irq/126-lan19:25:123
24970991817,1cyclictest65850irq/126-lan00:30:063
24970991817,1cyclictest65850irq/126-lan00:23:303
24970991717,0cyclictest65850irq/126-lan23:26:003
24970991717,0cyclictest65850irq/126-lan23:06:153
24970991717,0cyclictest65850irq/126-lan22:49:053
24970991717,0cyclictest65850irq/126-lan22:15:123
24970991717,0cyclictest65850irq/126-lan21:25:543
24970991717,0cyclictest65850irq/126-lan21:05:203
24970991717,0cyclictest65850irq/126-lan20:20:433
24970991717,0cyclictest65850irq/126-lan19:57:273
24970991717,0cyclictest65850irq/126-lan19:15:143
24970991717,0cyclictest65850irq/126-lan00:15:163
24970991716,1cyclictest65850irq/126-lan23:35:133
24970991716,1cyclictest65850irq/126-lan23:18:283
24970991716,1cyclictest65850irq/126-lan22:56:153
24970991716,1cyclictest65850irq/126-lan22:00:263
24970991716,1cyclictest65850irq/126-lan00:36:173
24970991716,1cyclictest65850irq/126-lan00:28:493
24970991716,1cyclictest65850irq/126-lan00:11:593
24970991716,1cyclictest65850irq/126-lan00:05:143
24970991616,0cyclictest65850irq/126-lan23:41:593
24970991616,0cyclictest65850irq/126-lan23:30:153
24970991616,0cyclictest65850irq/126-lan23:20:093
24970991616,0cyclictest65850irq/126-lan23:11:303
24970991616,0cyclictest65850irq/126-lan22:44:393
24970991616,0cyclictest65850irq/126-lan21:51:273
24970991616,0cyclictest65850irq/126-lan21:23:393
24970991616,0cyclictest65850irq/126-lan19:45:423
24970991615,1cyclictest65850irq/126-lan22:35:133
24970991615,1cyclictest65850irq/126-lan21:12:243
24970991615,1cyclictest65850irq/126-lan20:40:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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