| .. note that if this is changed from the default approach of using an *include* | |
| (in index.rst) to a separate performance page, the header needs to be changed | |
| from === to ***, the filename extension needs to be changed from .inc.rst to | |
| .rst, and a link needs to be added in the sub-package toctree | |
| .. _astropy-convolution-performance: | |
| Performance Tips | |
| ================ | |
| The :func:`~astropy.convolution.convolve` function is best suited to small | |
| kernels, and can become very slow for larger kernels. In this case, consider | |
| using :func:`~astropy.convolution.convolve_fft` (though note that this function | |
| uses more memory). | |