Re: Pre-alloc ListCell's optimization - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: Pre-alloc ListCell's optimization
Date
Msg-id 20120830013026.GH8753@momjian.us
Whole thread Raw
In response to Re: Pre-alloc ListCell's optimization  (Stephen Frost <sfrost@snowman.net>)
Responses Re: Pre-alloc ListCell's optimization
List pgsql-hackers
On Fri, May 18, 2012 at 06:19:52PM -0400, Stephen Frost wrote:
> * Stephen Frost (sfrost@snowman.net) wrote:
> > > llist_opt: 9289 tps
> > > HEAD:      9286 tps
> > 
> > llist_opt: 9407 tps
> > 
> > Which gives us ~1.3% improvment.
> 
> Trying out some different options- going with 32 pre-allocated
> ListCell's actually reduced performance, according to these tests.
> 
> Dropping it to 4 improved performance a bit: 9476 tps.
> 
> Going to keep playing around and see where this goes.

Any status on this?


--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + It's impossible for everything to be true. +



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