Re: external sort performance

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On Thu, Nov 17, 2011 at 2:10 PM, Jon Nelson <jnelson+pgsql@xxxxxxxxxxx> wrote:
> What sorts of things should I be looking at to improve the performance
> of this query? Is my interpretation of that log line totally off base?

You'll have to post some more details.
Like a query and an explain/explain analyze.

Memory consumption probably skyrockets since you'll need at least one
sort per table, so if you have 100+, then that's (at least) 100+
sorts.
Without the explain output it's impossible to be sure.

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