[Serusers] Questions about ser

[Jan Janak]

On 18-07-2005 15:43, Michael Ulitskiy wrote:
> Hello,
> 
> I'm using several modules that access a database.
> I've noticed that when I start ser in forked mode with
> "children=8", it generates 62 connections to database.
> Does every child open a separate set of database handles
> (one for every module)?

   Yes.

> I remember I saw on the mailing list advises to run 
> ser with hundreds of children to avoid problems when no workers
> are available to process a message. If my guess is true it would
> generate hundreds (or even thousands) of database connections.
> I'm really interested to hear how people out there deal with it.

  No, you don't need hundreds of children, usualy 16 is maximu what you
  need. Newer ser versions contain connection pool, so each child will
  open exactly one database connection and it will be reused across
  modules.

> On a separate note I'm curious whether number of children in ser
> is limited to a given startup value or ser is able to fork additional 
> children as needed?
> Thank you,

  It is limited by the value configured in the config file.

    Jan.