>Hi Nadya,
>
>With post-processing you need to do 3 IO operations - write, read, write. If you do it directly with LLFF then there's only one IO operation - write, so that's likely to lead to some savings.
>
>Cheers,
>
>Andrew

COPY TO function seems to work faster, than scanning huge file. Post-processing will be done with fll written in C, so it also would be fast. May be I can do some benchmarking later this week or the next week, because today was quite a crazy day...