On Tue, Jan 15, 2013 at 7:46 PM, Tom Lane <[email protected]> wrote: >> Compressing every small packet seems like it'd be overkill and might >> surprise people by actually reducing performance in the case of lots of >> small requests. > > Yeah, proper selection and integration of a compression method would be > critical, which is one reason that I'm not suggesting a plugin for this. > You couldn't expect any-random-compressor to work well. I think zlib > would be okay though when making use of its stream compression features. > The key thing there is to force a stream buffer flush (too lazy to look > up exactly what zlib calls it, but they have the concept) exactly when > we're about to do a flush to the socket. That way we get cross-packet > compression but don't have a problem with the compressor failing to send > the last partial message when we need it to.
Just a "stream flush bit" (or stream reset bit) on the packet header would do. First packet on any stream would be marked, and that's it. -- Sent via pgsql-hackers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
