openstack team mailing list archive

[Devin Carlen <devin.carlen@xxxxxxxxx>]

We really need to hear from Sandy Walsh on this thread so he can elaborate on how the distributed scheduling works (with multiple mysql databases).

Devin


On Sep 26, 2011, at 6:41 AM, Soren Hansen wrote:

> 2011/9/26 Pitucha, Stanislaw Izaak <stanislaw.pitucha@xxxxxx>:
>> The pain starts when your max memory usage crosses what you have available.
>> Check http://dev.mysql.com/doc/refman/5.1/en/memory-use.html - especially comments which calculate the needed memory for N connections for both innodb and isam. (mysqltuner.pl will also calculate that for you)
>> 
>> Hundreds of connections should be ok. Thousands... you should rethink it ;)
> 
> Hm.. It doesn't take many racks full of blade servers to get into 4
> digit numbers of compute nodes. Certainly fewer than I was expecting
> to see in a garden variety Nova zone.
> 
> -- 
> Soren Hansen        | http://linux2go.dk/
> Ubuntu Developer    | http://www.ubuntu.com/
> OpenStack Developer | http://www.openstack.org/
> 
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