Greetings worthymen.
I have a question regarding filesystem disk space usage.
We have a production database containing 5 years of sales data.
Linux 2.6.5; Postgresq 7.4.7. VACUUM ANALZYE the entire database
everynight (about 40min).
It's size, @SUM(pg_class.relpages) * 8192K, is ...
About 66 Gigabytes on disk.
When I rebuild the database (using pg_dump and pgsql ), the new
resultant database is ..
About 48 Gigabytes on disk.
A 27% space savings.
Can someone tell me why that is?
Thank you,
David Link
White Plains, NY
Long live Postgres.