Skip site navigation (1) Skip section navigation (2)

Re: Slow delete times??

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: alvarezp(at)alvarezp(dot)ods(dot)org
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Slow delete times??
Date: 2004-01-24 01:44:34
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
"Octavio Alvarez" <alvarezp(at)alvarezp(dot)ods(dot)org> writes:
> Please tell me if this timing makes sense to you for a Celeron 433 w/
> RAM=256MB dedicated testing server. I expected some slowness, but not this
> high.

I'll bet you have foreign keys referencing this table, and the
referencing columns do not have indexes.  PG will let you do that
... but it makes updates and deletes horribly slow.  You generally
want to add those indexes.

If they *are* indexed, check for datatype mismatches.  That's
another thing that kills performance ...

			regards, tom lane

In response to

pgsql-performance by date

Next:From: Mark KirkwoodDate: 2004-01-24 03:27:04
Subject: Re: High Performance/High Reliability File system on SuSE64
Previous:From: Jenny ZhangDate: 2004-01-24 01:34:24
Subject: query slows under load

Privacy Policy | About PostgreSQL
Copyright © 1996-2017 The PostgreSQL Global Development Group