Hello, everyone! I think I have just enough C++ knowledge to write very bad code, and I would really like to just be better. I am writing an algorithm that has to do with solving integer programs, and thus I am dealing extensively with integer matrices, in particular column vectors stored as vector<int>. Here is a line from my gprof: % cumulative self self total time seconds seconds calls s/call s/call name 14.33 8.97 4.06 75669549 0.00 0.00 std::vector<int, std::allocator<int> >::vector(std::vector<int, std::allocator<int> > const&) I am having a little trouble understanding this line. I have several functions that are my_func(const vector<int>& my_vec,...). My reasoning was that the function wouldn't copy the column vector into the parameter in this case, thus saving me time. But it looks like something is showing up in the profile. Can anyone explain to me what might be happening here? I am better that there is actually a simple fix to avoid spending 14% of my algorithm in this function... Thanks so much for any comments that anyone might have! -- View this message in context: http://www.nabble.com/Optimizing-using-grof%2C-interpreting-flat-profile--tp24156371p24156371.html Sent from the gcc - Help mailing list archive at Nabble.com.
