Forum .LRN Q&A: Re: Univ. of Valencia is running OACS 5.1 with Postgres 8.1.3 in our production server

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2: Re: Univ. of Valencia is running OACS 5.1 with Postgres 8.1.3 in our production server (response to 1)
Posted by alex borges on 03/25/06 05:50 PM
Jose,

First, congrats on your deployment. It seems like a lot of work!

Second, we are planning on rolling this out on one of the bigest universities in Mexico (130,000 users), and im in charge of dimensioning (what hardware do we need to buy).

I was wondering if you could share anything about your own deployment regarding this.

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3: Re: Res: Re: Univ. of Valencia is running OACS 5.1 with Postgres 8.1.3 in our production server (response to 2)
Posted by Jose Agustin Lopez Bueno on 03/27/06 09:45 AM
Hello, Alex!

Our numbers (average):

Users: 60000 students, 3500 teachers
Classes: 8000
Simultaneous connections: 200

Aolserver: Debian AMD-64 Opteron (2 CPU) 1.6 MHz
4 GB RAM
Aolserver 4.0.10
Postgres: Debian AMD-64 Opteron (4 CPU) 2.0 MHz
12 GB RAM
Postgres 8.1.3

Regards,
Agustin

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4: Re: Re: Univ. of Valencia is running OACS 5.1 with Postgres 8.1.3 in our production server (response to 2)
Posted by Gustaf Neumann on 03/27/06 12:30 PM
Here is some information that we collected. we have up to 1200 concurrent users, up to 750 concurrent transfers (i.e. parallel pound sessions)

http://www.openacs.org/forums/message-view?message_id=340370

The hardware you need depends to a big deal on the applications and usage patterns.

best regards

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5: Re: Re: Res: Re: Univ. of Valencia is running OACS 5.1 with Postgres 8.1.3 in our production server (response to 3)
Posted by alex borges on 04/08/06 01:15 AM
Jose, thanks for the quick response!

Ok, so we are finishing this up, and im thinking we do not have the bandwidth demand that you can probably see in Gustaf's or your own setup.

Id assume gustaf has a pc per student, and they all are on a high speed connection (i mean, 20,000 online exersises per hour...theyve all gotta be clicking like rabbits).

In Valencia probably they also have this kind of setup (lots of in-campus connectivity)

Our setup will be quite different, we probably will have most users connecting from outside the university, and we have a limited bandwith at that (about 50MBit).

So this brings me to ask, whats the bandwith demmand you have in your setup?

I mean, at the peak hour are you filling up a couple of GigaBits?, a couple of megabits?, less than a megabit?

This can help me estimate that we need more bandwith (for example), or more horsepower, depending on our own budget limitations.