From: | Heikki Linnakangas <heikki(at)enterprisedb(dot)com> |
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To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Patches <pgsql-patches(at)postgresql(dot)org> |
Subject: | Re: A little COPY speedup |
Date: | 2007-03-01 22:19:46 |
Message-ID: | 45E75182.8040502@enterprisedb.com |
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Lists: | pgsql-patches |
Heikki Linnakangas wrote:
> Tom Lane wrote:
>> I'm not sure whether I like your flag approach better than the
>> last-used-offset one. The previous patch probably buys some teeny
>> amount more performance, but the flag seems more robust (noting in
>> passing that neither patch attempts to WAL-log its changes, so we really
>> need to treat the values as hints). And a change as sketched here would
>> leave us 15 free bits for future expansion, which might be nice.
>
> I'll post a patch along those lines.
Here it is.
I'm not fond of the macro names for the flag, but couldn't think of
anything shorter yet descriptive.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
Attachment | Content-Type | Size |
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nofreelinepointers-2.patch | text/x-patch | 9.4 KB |
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