Thomas F.O'Connell wrote:
As a result, I was intending to inflate the value of
effective_cache_size to closer to the amount of unused RAM on some of
the machines I admin (once I've verified that they all have a unified
buffer cache). Is that correct?
Effective cache size is IMHO a "bogus" parameter on postgresql.conf,
this because:
1) That parameter is not intended to instruct postgres to use that ram but
is only an hint to the engine on what the "DBA" *believe* the OS cache
memory for postgres
2) This parameter change only the cost evaluation of plans ( and not soo
much )
so don't hope to double this parameter and push postgres to use more RAM.
Regards
Gaetano Mendola
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