[Server-devel] Memory use with SSL connections

[John Watlington]

Until Sugar has a better model for collaboration, anything over about
500 users is moot.   (Thanks for testing it all the way up to 2K users).

The problem is that the laptop UI will try to show all the users on the
server in the neighborhood view...   Can you try to connect an XO
to the server with over 500 hyperactivity users, and see what breaks ?

Certainly we are interested in finding and fixing the bottlenecks, but
I don't think pushing past 500 users is critical at this time.

On the other hand, supporting virtual machines so we can have
five ejabber instances running on a server (w. sufficient RAM)
might be an interesting topic to pursue...

Cheers,
wad

On Oct 6, 2008, at 1:07 AM, Douglas Bagnall wrote:

> hi
>
> I'm testing a slightly modified ejabberd 2.0.1 for OLPC, and am seeing
> quite high memory use -- a 1GB machine is unreliable beyond 2000
> connections.  There are pictures here:
>
> http://wiki.laptop.org/go/ 
> Ejabberd_resource_tests#Try_4:_a_few_thousand_users
>
> OLPC's XO laptops use (old style) SSL connections, and these results
> are in the same order of magnitude that Sean Dilda reported in May:
>
> http://lists.jabber.ru/pipermail/ejabberd/2008-May/003676.html
>
>> For 2,000 SSL connections it'll take around 1GB of RAM.  For 2,000
>> plaintext connections, it'll take around 150MB.  I'm seeing similar
>> results for the old port 5223 tls and using starttls on port 5222.
>
> Does anyone have any tips, patches, or configuration options that
> might help?
>
> regards,
>
>
> Douglas Bagnall
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