Tom Lane wrote:
> CVSROOT: /cvsroot
> Module name: pgsql-server
> Changes by: tgl@postgresql.org 02/10/04 13:19:55
>
> Modified files:
> src/backend/executor: nodeAgg.c
> src/backend/utils/fmgr: fmgr.c
> src/backend/utils/sort: tuplesort.c
>
> Log message:
> Tweak a few of the most heavily used function call points to zero out
> just the significant fields of FunctionCallInfoData, rather than MemSet'ing
> the whole struct to zero. Unused positions in the arg[] array will
> thereby contain garbage rather than zeroes. This buys back some of the
> performance hit from increasing FUNC_MAX_ARGS. Also tweak tuplesort.c
> code for more speed by marking some routines 'inline'. All together
> these changes speed up simple sorts, like count(distinct int4column),
> by about 25% on a P4 running RH Linux 7.2.
Wow, huge win. Thanks, Tom.
--
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