Re: SQL/MED - file_fdw

On Sat, Feb 12, 2011 at 03:42:17PM -0600, Kevin Grittner wrote:
> In two hours of testing with a 90GB production database, the copy
> patch on top of HEAD ran 0.6% faster than HEAD for pg_dumpall
> (generating identical output files), but feeding that in to and
> empty cluster with psql ran 8.4% faster with the patch than without!
> I'm going to repeat that latter with more attention to whether
> everything made it in OK.  (That's not as trivial to check as the
> dump phase.)
>  
> Do you see any reason that COPY FROM should be significantly
> *faster* with the patch?

No.  Up to, say, 0.5% wouldn't be too surprising, but 8.4% is surprising.  What
is the uncertainty of that figure?

> Are there any particular things I should
> be checking for problems?

Nothing comes to mind.

Thanks,
nm