Re: Question about DROP TABLE

Hi

2016-01-12 11:57 GMT+01:00 Michal Novotny <michal(dot)novotny(at)trustport(dot)com>:

> Dear PostgreSQL Hackers,
> I've discovered an issue with dropping a large table (~5T). I was
> thinking drop table is fast operation however I found out my assumption
> was wrong.
>
> Is there any way how to tune it to drop a large table in the matter of
> seconds or minutes? Any configuration variable in the postgresql.conf or
> any tune up options available?
>

drop table should be fast.

There can be two reasons why not:

1. locks - are you sure, so this statement didn't wait on some lock?

2. filesystem issue - can you check the speed of rm 5TB file on your IO?

Regards

Pavel

>
> PostgreSQL version used is PgSQL 9.4.
>
> Thanks a lot!
> Michal
>
>
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