[Users] connection pooling with unixodbc

Daniel-Constantin Mierla daniel at voice-system.ro
Thu Mar 1 17:16:41 CET 2007


Hello,

there is a connection per each child process. If you have many network 
interfaces there will be a multiply of number of children by that. There 
are special children for MI (FIFO/unixsock/...) servers.

Cheers,
Daniel


On 03/01/07 18:01, Papadopoulos Georgios wrote:
> hello all
>  
> I am loading the following 10 modules that use an oracle database 
> through unixodbc.
> modparam("usrloc|acc", "db_url", "unixodbc://user:pass@/OracleODBC-10g")
> modparam("auth_db|alias_db|uri_db|group|permissions|lcr|domain", "db_url", 
> "unixodbc://user:pass@/OracleODBC-10g")
> modparam("avpops", "avp_url", "unixodbc://user:pass@/OracleODBC-10g")
>  
> In my config I have fork=yes and tcp is enabled
>  
> With 5 listen addresses and 
> children=1 : 10 connections in the database.
> children=2 : 16 connections 
> children=3 : 22 connections  
>  
> With 4 listen address and
> children=1 : 9 connections in the database.
> children=2 : 14 connections 
> children=3 : 19 connections
>  
> Could anyone help me understand the relation between listen addresses, 
> number of children and number of modules that use the db?
> Also these numbers are the same whether I use MySQL both through the 
> mysql module and the unixodbc module. Looking into the code, it seems 
> like there is connection pooling into the unixodbc module. However I 
> get all these connections. What am I doing wrong?
>  
> thank you for any help
>  
> George
>  
>
>
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