Re: [INTERFACES] Re: improve performance - Mailing list pgsql-sql

From Jan Wieck
Subject Re: [INTERFACES] Re: improve performance
Date
Msg-id 200101161933.OAA11693@jupiter.jw.home
Whole thread Raw
In response to Re: [INTERFACES] Re: improve performance  (Hannu Krosing <hannu@tm.ee>)
List pgsql-sql
Hannu Krosing wrote:
> Tom Lane wrote:
> >
> >
> > I've heard lots of people want to increase BLCKSZ, but you're the first
> > one who ever wanted to reduce it.  You sure you want to do this?  It's
> > going to make the maximum row length uncomfortably short.
>
> And it may even not work, as some system tables (that are also affected
> by this)
> may need the full 8k. AFAIK it has never been tested with BLCKSZ < 8k
   Except  for  two different sorted (but correct) results while   selecting inherited tables in "misc", regression
testspassed   with 2K.
 
   Why  shouldn't  it work? All the catalogs that require really   big data have toast tables now.
   Anyway, the 8K default BLCKSZ already restricts index  tuples   to 2700 bytes.  So I wouldn't recommend it at all.


Jan

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