Re: [ts-7000] Interval measurement in TS-7400

[Jim Jackson <>]

On Thu, 17 Apr 2008, gebbet00 wrote:

> What's the correct way to do interval measurement in TS-7400? I want
> to know what amount of thime certain code is taking to be executed. I do
>
> gettimeofday( &init_struct, NULL );
> ...
> code
> ...
> gettimeofday( &end_struct, NULL );
>
> but when I check tv_sec and tv_usec, values are always the same for
> init_struct and end_struct, no matter how short or long the
> intermediate routine is. Why?

I suspect you have a bug in your code. But cannot tell without seeing it.

Here's some code I've used to do this....

  gettimeofday(&start, &tz);

  .... do stuff...

  gettimeofday(&tm, &tz);

  t=tm.tv_sec-start.tv_sec;
  t2=(tm.tv_usec-start.tv_usec)/1000;
  if (t2<0) { t2+=1000; t--; }
  printf("%d.%03d ",t,t2);


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