Horton

Re: [HACKERS] pg_dump and thousands of schemas

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Denis <socsam@gmail.com>
Cc: pgsql-performance@postgresql.org
Date: 2012-11-06T15:07:34Z
Lists: pgsql-hackers, pgsql-performance

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Teach AbortOutOfAnyTransaction to clean up partially-started transactions.

Denis <socsam@gmail.com> writes:
> I've read all the posts in thread, and as I understood in version 9.2 some
> patches were applied to improve pg_dump speed. I've just installed
> PostgreSQL 9.2.1 and I still have the same problem. I have a database with
> 2600 schemas in it. I try to dump each schema individually, but it takes too
> much time for every schema (about 30-40 seconds per schema, no matter what
> the data size is).

Could you provide a test case for that?  Maybe the output of pg_dump -s,
anonymized as you see fit?

> Also for each schema dump I have a slow query log entry,

Could you provide EXPLAIN ANALYZE output for that query?

			regards, tom lane