| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Vivek Khera <khera(at)kcilink(dot)com> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: FreeBSD page size |
| Date: | 2003-09-04 22:12:46 |
| Message-ID: | 200309042212.h84MCkE29256@candle.pha.pa.us |
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| Lists: | pgsql-performance |
Vivek Khera wrote:
> >>>>> "BM" == Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
>
>
> BM> The 32k number is from Tatsuo testing a few years ago.
>
> Can you verify for me that these parameters in postgresql.conf are
> based on the BLCKSZ (ie one buffer is the size of the BLCKSIZ macro):
>
> shared_buffers
> effective_cache_size
>
> Logically it makes sense, but I want to be sure I'm adjusting my
> postgresql.conf parameters accordingly when I try different block
> sizes.
Uh, yes, I think they have to be the same because they are pages in the
shared buffer cache, not disk blocks.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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