Re: size of units in postgresql.conf

Tom Lane wrote:
> Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > Here is the 7.3 postgresql.conf file, where I have added units to the
> > file.
>
> Aren't these misleading if one is using nonstandard BLCKSZ?

Yep, I remembered it but forgot later.  I added "typically" to the 8k
mention in all places.


>
> > #shared_buffers = 64        # 2*max_connections, min 16, 8K each
> > #wal_buffers = 8        # min 4, 8K each
> > #effective_cache_size = 1000    # 8K each
>
>
> These could usefully be labeled as "unit is cost of a sequential page
> fetch":
>
> > #random_page_cost = 4
> > #cpu_tuple_cost = 0.01
> > #cpu_index_tuple_cost = 0.001
> > #cpu_operator_cost = 0.0025

Nice, it is now:

#random_page_cost = 4           # units are one sequential page fetch cost
#cpu_tuple_cost = 0.01          # (same)
#cpu_index_tuple_cost = 0.001   # (same)
#cpu_operator_cost = 0.0025     # (same)

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