Re: FreeBSD page size - Mailing list pgsql-performance

From Bruce Momjian
Subject Re: FreeBSD page size
Date
Msg-id 200309042212.h84MCkE29256@candle.pha.pa.us
Whole thread Raw
In response to Re: FreeBSD page size  (Vivek Khera <khera@kcilink.com>)
List pgsql-performance
Vivek Khera wrote:
> >>>>> "BM" == Bruce Momjian <pgman@candle.pha.pa.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.

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