From: | Bruce Momjian <bruce(at)momjian(dot)us> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Gregory Stark <stark(at)enterprisedb(dot)com>, pgsql-patches <pgsql-patches(at)postgresql(dot)org> |
Subject: | Re: Packed Varlena Update (v21) |
Date: | 2007-04-10 01:33:26 |
Message-ID: | 200704100133.l3A1XQ419362@momjian.us |
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Thread: | |
Lists: | pgsql-patches |
Added to TODO:
o Allow single-byte header storage for arrays
---------------------------------------------------------------------------
Tom Lane wrote:
> Gregory Stark <stark(at)enterprisedb(dot)com> writes:
> > "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
> >> Forgot to mention: one of the revisions was to not add the "sizes.sql"
> >> test, because the output was platform-dependent and is likely to get
> >> more so if any ability to change the toast thresholds gets put in.
> >> Can we improve that test to not expose any platform-dependent numbers?
>
> > I had imagined that we would have two versions of output files. Other than
> > 32-bit versus 64-bit what other platform-dependent variations enter into it?
>
> If there'd be only two then I'd be all right with it, but I'm worried
> that making TOAST thresholds configurable would result in lots more
> possible outputs than that.
>
> BTW, another area that should be kept on the TODO list is to see whether
> it makes sense to support 1-byte-header format for array elements.
> I looked at that briefly while reviewing the patch but decided it was a
> large additional chunk of work and not on the critical path.
>
> regards, tom lane
>
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--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://www.enterprisedb.com
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