[Systems] aslo @ rit scheduling

[David Farning]

On Mon, Feb 8, 2010 at 10:35 AM, Bernie Innocenti <bernie at codewiz.org> wrote:
> On Fri, 2010-02-05 at 13:28 -0600, dfarning at gmail.com wrote:
>> Steve suggested that we reschedule setup for the first
>> week of the spring term.  I light of the scale of this
>> project and where it might lead,  it makes sense to take
>> it slow and think it through.
>
> The spring term starts on Jan 26th, right?
>
> If so, we should probably adopt the contingency plan to cope with the
> traffic when schools reopen in LatAm, which, I'm being told, is as soon
> as Jan 23th.
>
> How much effort would it be to configure two additional instances of
> aslo-web on treehouse and housetree, to serve requests in addition to
> sunjammer?


It should not be too bad....  The web nodes must have (R/W) access to
the database server and shared files.

It is pretty inefficient if the web nodes are not collocated with the
proxy and/or database server.... But both treehouse and housetree have
plenty of memory.  Aggressively caching should make this workable.
Memcached is distributed by design,  but it has a weight knob which
can tell nodes to look only at particular memcached instances.

david

> A single instance of the proxy and database could run off sunjammer,
> which is a relatively stable machine. This half-cluster should be almost
> as reliable as the present configuration, with roughly 3 times the
> processing power.
>
> --
>   // Bernie Innocenti - http://codewiz.org/
>  \X/  Sugar Labs       - http://sugarlabs.org/
>
>
>