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Re: plan time of MASSIVE partitioning ...

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: PostgreSQL - Hans-Jürgen Schönig <postgres(at)cybertec(dot)at>
Cc: pgsql-hackers Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: plan time of MASSIVE partitioning ...
Date: 2010-09-03 13:27:15
Message-ID: AANLkTik9=wjvnG7VPbPHuC9FXacvFge3U=UppmqSOocF@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
2010/9/3 PostgreSQL - Hans-Jürgen Schönig <postgres(at)cybertec(dot)at>:
> i tried this one with 5000 unindexed tables (just one col):
>
> test=# \timing
> Timing is on.
> test=# prepare x(int4) AS select * from t_data order by id desc;
> PREPARE
> Time: 361.552 ms
>
> you will see similar or higher runtimes in case of 500 partitions and a handful of indexes.

I'd like to see (1) a script to reproduce your test environment (as
Stephen also requested) and (2) gprof or oprofile results.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise Postgres Company

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