I don't think you can configure how much it will grow, but
you can reserve() (pre-allocate) space in the vector.
Useful when you know beforehand how many elements you will add
to the vector.

The documentation also say that when the vector have to grow,
the reserved size (capacity()) always (at least) doubles.

--
Rune H. H. Huseby

std::vector grows geometrically if you're using push_back() or insert().
This means it at least doubles its size when it needs to grow. You can
defeat this policy by preceding an insertion with a call to reserve().
There's no way to set a "growth increment"; growing by a fixed number of
elements can result in very poor performance if there are a lot of
reallocations, so it's no great loss, especially since you can still achieve
this effect by using reserve().

--
Doug Harrison

How can I control the size of the chunks by which a stl::vector grows
automatically ?. I want something like the GrowBy parameter of MFC
CObArray::SetSize member. Having a vector grow by only one element each time
can't be right.

regards,

Niels Hede Pedersen