Slow debug in SDK (Vivado 2014-2016)

Question

Hello

I´m playing with zedboard with tutorials/workshop/training stuff from this site for 2 last days. I´m the newbie into this world (have some background with embedded C, microcontrollers...)

Now I´m trying the features of the debug part of SDK. Everything works fine except its too slow - I mean the time when simple line of a code is finished takes like 1 s.

example:

for (i = 0; i < 6000; ++i) {
temp = temp2; //breakpoint, 1 loop lasts 1-2 seconds
}

Is this a feature of free Webpack licence, hardware or there is something wrong?

Regards,

Longin

zedhed · Accepted Answer

Hi Longin,

When you say it debug is slow to execute, that is a subjective statement.

What are you comparing the execution to?
1) Embedded runtime code execution time
2) Debugging code execution on a PC

If you are comparing the debug of a remote target to that of debugging code execution on a PC, there will be vast differences in time due to the download cable that links the embedded platform to SDK on the PC.

For your second loop, do you get any additional execution time improvement when you remove the conditional breakpoint? If so, it could be the conditional breakpoint slowing things down for you:

http://www.codeproject.com/Questions/501675/Whyplusareplusconditionalplusbreakpointsplussoplus

Regards,

-Kevin