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2023-03-26 - 23:54

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #5

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 
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x86 Intel Celeron G5905 @3500 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of shadow in rack #9, slot #5
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 rack9slot5s.osadl.org (updated Sun Mar 26, 2023 12:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8649991312,1cyclictest68350irq/133-lan10:35:501
8649991212,0cyclictest68350irq/133-lan11:51:591
8649991212,0cyclictest68350irq/133-lan09:14:191
8649991211,1cyclictest68350irq/133-lan12:14:001
8649991211,1cyclictest68350irq/133-lan11:33:021
8649991211,1cyclictest68350irq/133-lan11:15:531
8649991211,1cyclictest68350irq/133-lan11:02:171
8649991211,1cyclictest68350irq/133-lan10:55:001
8649991211,1cyclictest68350irq/133-lan09:22:231
8649991211,1cyclictest68350irq/133-lan08:57:271
8649991211,1cyclictest68350irq/133-lan08:51:491
8649991211,1cyclictest68350irq/133-lan08:43:201
8649991111,0cyclictest68350irq/133-lan12:20:201
8649991111,0cyclictest68350irq/133-lan12:07:461
8649991111,0cyclictest68350irq/133-lan10:08:421
8649991111,0cyclictest68350irq/133-lan09:51:561
8649991111,0cyclictest68350irq/133-lan09:51:561
8649991111,0cyclictest68350irq/133-lan09:28:481
8649991111,0cyclictest68350irq/133-lan08:10:171
8649991110,1cyclictest68350irq/133-lan12:16:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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