On Fri, Jun 23, 2017 at 6:08 AM, Chapman Flack <chap@anastigmatix.net> wrote:
> Well, gzip was doing pretty well; it could get a 16 MB segment file down
> to under 27 kB, or less than 14 bytes for each of 2000 pages, when a page
> header is what, 20 bytes, it looks like? I'm not sure how much better
> I'd expect a (non-custom) compression scheme to do. The real difference
> comes between compressing (even well) a large unchanged area, versus being
> able to recognize (again with a non-custom tool) that the whole area is
> unchanged.
Have you tried as well lz4 for your cases? It performs faster than
gzip at minimum compression and compresses less, but I am really
wondering if for almost zero pages it performs actually better.
--
Michael