Re: Varlena and binary

Radosław Smogura <rsmogura@softperience.eu>

From: Radosław Smogura <rsmogura@softperience.eu>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: PG Hackers <pgsql-hackers@postgresql.org>
Date: 2011-02-07T21:57:39Z
Lists: pgsql-hackers
Just from curious may I ask in which direction this will go, and how this will 
affect performance of text and binary format?

Actually I started to make smaller improvements, and I think about one big to 
encode text (when client and server encoding are different) directly to 
StringInfo, without intermediate buffer.

Thanks in advice
Radek

Tom Lane <tgl@sss.pgh.pa.us> Monday 07 February 2011 17:12:07
> =?utf-8?q?Rados=C5=82aw_Smogura?= <mail@smogura.eu> writes:
> > I'm sending small patch for textsend. It reduces unnecessary copies, and
> > memory usage for duplication of varlena data. May you look?
> 
> This code will break the day that text and bytea don't have the same
> internal representation, which seems likely to be soon.  Barring some
> compelling evidence of a major performance improvement obtainable this
> way, I don't think we want this patch.
> 
> 			regards, tom lane