Dinesh Bhandary <dbhandary@iii.com> writes:
> We have been having some performance issues with indexes right after
> truncating a table.
You'd need to be a lot more specific than that if you want useful help.
Also, pgsql-performance is a better list for discussing performance
issues.
http://wiki.postgresql.org/wiki/SlowQueryQuestions
> My understanding is truncate removes all the
> contents of the table and the space get reclaimed immediately.
> In such cases what happens to its indexes.
They get rebuilt as empty indexes.
> It does not seem like they
> are removed, but merely marked for deletion by a vacuum job and it
> creates huge bloats and performance problems.
On what do you base this clearly-contrary-to-reality conclusion?
regards, tom lane