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Re: Number of Librarian (or twisted) database connections

To: Stuart Bishop <stuart.bishop@xxxxxxxxxxxxx>
From: Jonathan Lange <jml@xxxxxxxxx>
Date: Thu, 1 Sep 2011 16:29:03 +0100
Cc: Launchpad Community Development Team <launchpad-dev@xxxxxxxxxxxxxxxxxxx>
In-reply-to: <CADmi=6MbDu3MuBGFk_Kaw9mTWd53SjfhS_JrNPWqdGhR4dMt9w@mail.gmail.com>
Sender: jonathan.lange@xxxxxxxxx

On Thu, Sep 1, 2011 at 4:13 PM, Stuart Bishop
<stuart.bishop@xxxxxxxxxxxxx> wrote:
> Can anyone tell me how many database connections the Librarian will
> open up, and where this is configured?
>
> Assuming there is a limit n, if I issue n requests will I have tested
> every open database connection?
>

I don't know the librarian code well, but it's probably the 'min' and
'max' attributes of a ConnectionPool object, passed in as cp_min and
cp_max in the ConnectionPool constructor.

See <http://twistedmatrix.com/documents/current/api/twisted.enterprise.adbapi.ConnectionPool.html>

jml

References

Number of Librarian (or twisted) database connections
From: Stuart Bishop, 2011-09-01