Re: Vacuums on large busy databases

Francisco
On 14-Sep-06, at 1:36 PM, Francisco Reyes wrote:

> Dave Cramer writes:
>
>> What is effective_cache set to ?
>
> Increasing this seems to have helped significantly a web app. Load
> times seem magnitudes faster.
>
> Increased it to effective_cache_size = 12288 # 96MB
>
> What is a reasonable number?
> I estimate I have at least 1 to 2 GB free of memory.
You are using 6G of memory for something else ?

effective cache should be set to 75% of free memory
>
> Don't want to get too carried away right now with too many
> changes.. because right now we have very few connections to that
> database (usually less than 10), but I expect it to go to a norm of
> 20+.. so need to make sure I won't make changes that will be a
> problem in that scenario.
>
> So far only see one setting that can be an issue: work_mem so have
> it set to only 32768.
>
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