Horton

Re: Rethinking MemoryContext creation

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Simon Riggs <simon@2ndquadrant.com>
Cc: pgsql-hackers@lists.postgresql.org
Date: 2017-12-11T17:38:21Z
Lists: pgsql-hackers 
Simon Riggs <simon@2ndquadrant.com> writes:
> On 11 December 2017 at 16:27, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> For a *very* large majority of the callers of AllocSetContextCreate,
>> the context name is a simple C string constant, so we could just store
>> the pointer to it and save the space and cycles required to copy it.

> Why have the string at all in that case?

Try reading a MemoryContextStats dump without it ...

			regards, tom lane

Commits

  1. Rethink MemoryContext creation to improve performance.