| From: | Gary Doades <gpd(at)gpdnet(dot)co(dot)uk> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Strange Create Index behaviour |
| Date: | 2006-02-15 21:11:15 |
| Message-ID: | 43F398F3.30105@gpdnet.co.uk |
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| Lists: | pgsql-hackers pgsql-performance |
Tom Lane wrote:
> shared_buffers is unlikely to impact index build time noticeably in
> recent PG releases. maintenance_work_mem would affect it a lot, though.
> What setting were you using for that?
>
Also, i tried upping maintenance_work_mem to 65536 and it didn't make
much difference (maybe 10% faster for the "normal" cases). Upping the
shared_buffers *definitely* makes the bad cases worse though, but I
agree I don't see why...
Regards,
Gary.
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