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Diffstat (limited to 'databases/postgresql-devel/pkg-message')
| -rw-r--r-- | databases/postgresql-devel/pkg-message | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/databases/postgresql-devel/pkg-message b/databases/postgresql-devel/pkg-message index f3a38abc077a..e839fed675cd 100644 --- a/databases/postgresql-devel/pkg-message +++ b/databases/postgresql-devel/pkg-message @@ -30,3 +30,18 @@ You can then start PostgreSQL by running: For postmaster settings, see ~pgsql/data/postgresql.conf For more tips, read ~pgsql/post-install-notes ====================================================================== + + * DEFAULT BLOCK SIZE CONFIGURABLE * + +Starting with 7.4, PostgreSQL's block size for the -devel port can be +changed from the default 8K blocks to either 16K or 32K blocks by +setting WITH_PGBLOCKSIZE to either "16K" or "32K". Changing block +sizes has uncertain performance implications and can result in faster +operation, in other cases slower. Benchmarking and testing your +installation is *highly recommended* before using these values in any +form of production! When changing block sizes, it is necesary to +dump, initdb, and reload data when changing block sizes. Be careful +when switching from databases/postgresql-devel and +databases/postgresql7 or from databases/postgresql-devel -> src +tarball builds that have different block sizes! +====================================================================== |