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Cortex-A
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Cortex A8 Instruction Cycle Timing
Offline
barney vardanyan
over 7 years ago
Note: This was originally posted on 17th March 2011 at
http://forums.arm.com
Hi) sorry for bad English
I need to count latency for two instruction, and all I have is the arm cortex A 8 documantation(charter 16) !
but I have no idea how can do this work using that documantation(
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Offline
Peter Harris
over 7 years ago
Note: This was originally posted on 15th April 2011 at
http://forums.arm.com
If you are using time to measure the elapsed time for a very short program then the odds are that most of the time is spent loading the program from storage and setting up the memory map.
Try setting up the timing function inside your program binary and measure a relatively large block of instructions so that the measurements overheads are small relative to the measurement.
Iso
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Peter Harris
over 7 years ago
Note: This was originally posted on 15th April 2011 at
http://forums.arm.com
If you are using time to measure the elapsed time for a very short program then the odds are that most of the time is spent loading the program from storage and setting up the memory map.
Try setting up the timing function inside your program binary and measure a relatively large block of instructions so that the measurements overheads are small relative to the measurement.
Iso
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