[Mageia-webteam] [Mageia-sysadm] Forum VM needs

[Maât]

Le 13/01/2011 13:50, Olivier Thauvin a écrit :
> * Michael Scherer (misc at zarb.org) wrote:
>> Le mercredi 12 janvier 2011 à 23:05 +0100, Maât a écrit :
>>> Le 12/01/2011 22:37, nicolas vigier a écrit :
>>>> On Wed, 12 Jan 2011, Maât wrote:
>>>>> So phpBB needs a LAMP Stack : Apache + PHP5 + MysSQL5 (it prefers to have MySQLi extention)
>>>> Do you know if it would be possible to use Postgresql instead of MySQL ?
>>>> We already have a Postgresql server running on alamut that we could use.
>>> phpBB3 is supposed to work with PostgreSQL 7.3+ though it's not as widely used as MySQL as a phpBB backend.
>> Great, so more testing to do /o\
> In practice, if the SQL was properly written, the SQL must work on any
> PGSQL version, especially since it have to work on other SQL server
> (mysql).
>
> But who know with php apps.
>
Troll™ detected ^^

>>> The problem (for me) is that i just know the basic of PostgreSQL... so we'll need someone else skilled 
>>> enough to tune it (and i'd be truly happy to learn from him/her)
>> Nanar will be able to do it, even if hosting a small database like this
>> may not be very appealing to him. There is just 5g, when compared to
>> sophie, I let him give the numbers.
> Sophie:
> - on disk size: ~ 200GB
> - biggers tables, rows estimated to 150 millions, next table 16 millions
> - 1208570 rpms in it currently
>
> I manage 5 posgresql servers at works.
>
>
\o/ Master !

Teach me :)

Nota : the difficult part with a forum is not really in the table size for tuning but in the complexity of requests with lots of joins mixed with the number of simultaneous read&write calls which can quickly make the server bite the dust :-/

=> clever indexing, good cache and memory tuning, good storage format (to avoid pessimistic table locking and to allow quick parsing with sometimes fulltext indexes)

(and database backup while users are using the forum without making it unusable can also be a challenge)

cheers,
Maât