"Jim C. Nasby" <jnasby@pervasive.com> writes:
> Actually, I guess the amount of memory used for zlib's lookback buffer
> (or whatever they call it) could be pretty substantial, and I'm not sure
> if there would be a way to combine that across all tapes.
But there's only one active write tape at a time. My recollection of
zlib is that compression is memory-hungry but decompression not so much,
so it seems like this shouldn't be a huge deal.
regards, tom lane