Re: Core team statement on replication in PostgreSQL

On Sat, 31 May 2008, Gurjeet Singh wrote:

Not if you use pg_clearxlogtail

This means we need to modify pg_standby to not check for filesize when
reading XLogs.

No, the idea is that you run the segments through pg_clearxlogtail | gzip, which then compresses lightly used segments massively because all the unused bytes are 0.  File comes out the same size at the other side, but you didn't ship a full 16MB if there was only a few KB used.