| From: | Neil Conway <neilc(at)samurai(dot)com> |
|---|---|
| To: | Sean Chittenden <sean(at)chittenden(dot)org> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>, PostgreSQL Performance <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: [COMMITTERS] pgsql-server/ /configure /configure.in rc/incl ... |
| Date: | 2003-03-07 00:47:52 |
| Message-ID: | 1046998072.10527.67.camel@tokyo |
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| Thread: | |
| Lists: | pgsql-committers pgsql-performance |
On Thu, 2003-03-06 at 19:36, Sean Chittenden wrote:
> I don't have my copy of Steven's handy (it's some 700mi away atm
> otherwise I'd cite it), but if Tom or someone else has it handy, look
> up the example re: the performance gain from read()'ing an mmap()'ed
> file versus a non-mmap()'ed file. The difference is non-trivial and
> _WELL_ worth the time given the speed increase.
Can anyone confirm this? If so, one easy step we could take in this
direction would be adapting COPY FROM to use mmap().
Cheers,
Neil
--
Neil Conway <neilc(at)samurai(dot)com> || PGP Key ID: DB3C29FC
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