08-Nov-2014 03:22, Walter Bright пишет:
On 11/7/2014 2:58 PM, Dmitry Olshansky wrote:
That's the problem with profilers:
they say what takes time but not why :)
Often I find myself looking at memcpy at the top of the list, so
obvious the
"textbook" answer is to optimize memcpy ;) In contrast it should be
read as "you
seem to do excessive copying of data".
dmd's profiler will give you a tree showing who called each function how
many times. This helps a lot with the "why" question.
This information is very limited esp in case of recursive functions,
it's still more of what instead of why. "Why" always takes a bit of
research.
Also I'd suggest to use many different profilers.
--
Dmitry Olshansky
