Re: guc units cleanup

Patch applied. Thanks.

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ITAGAKI Takahiro wrote:
> The attached patch changes units of the some default values in postgresql.conf.
>
> - shared_buffers = 32000kB => 32MB
> - temp_buffers = 8000kB => 8MB
> - wal_buffers = 8 => 64kB
>
> The code of initdb was a bit modified to write MB-unit values.
> Values greater than 8000kB are rounded out to MB.
>
> GUC_UNIT_XBLOCKS is added for wal_buffers. It is like GUC_UNIT_BLOCKS,
> but uses XLOG_BLCKSZ instead of BLCKSZ.
>
> Also, I cleaned up the test of GUC_UNIT_* flags in preparation to
> add more unit flags in less bits.
>
> Regards,
> ---
> ITAGAKI Takahiro
> NTT Open Source Software Center
>

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