Campbell Ritchie wrote:Then don't try to sort out the problem by hand because chances are you'll get it wrong.
With a stopwatch; if you can calculate 1,000,000 results in 1″, you probably don't have a problem.
Lilou Laure wrote:then how is one supposed to sort out the problem ?
Yes; the best known are called profilers. They are actually programmed to look for where your code is running the most slowly.
are there any software tools available ?
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