[pgpool-general: 3200] Re: making sense of the output of "show pool_pools"

[Yaron Naveh]

Hi Kent

The documentation was updated today (as least in source) to reflect that if
you have multiple backends then the number of entries will
be num_init_children*max_pools*num_backends. You probably have 2 backends
which can be reflected with the backend_id field in pool_pools.

If you have one backend then yes, a pool is a single connection that gets
reused. So you have exactly num_init_children child processes each
containing up to max_pool pools (=connections), each one to a different
db/user combination. If you have multiple backends then each pool will
contain one connection per backend (for the same db/user combination).

Thanks,
Yaron

On Thu, Sep 25, 2014 at 12:18 PM, Kent Tong <kent.tong.mo at gmail.com> wrote:

> Hi,
>
> How to interpret the output of "show pool_pools"? What is a "pool" anyway?
> Is it a single connection that gets reused? My num_init_children is 50 and
> max_pool lines is 4, the doc says that it will list 200 entries but 400
> were listed. Why? In particular, I found entries with identical
> pool_pid+pool_id.
>
> Thanks in advance!
>
> --
> Kent Tong
> IT author and consultant, child education coach
>
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>


-- 

I'm on Twitter (@YaronNaveh <http://twitter.com/#!/YaronNaveh>)
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