Did a little test of Jitsi tonight. First thing is there were no
appreciable cpu or memory requirement increase when multiple users are
connected in a session. However, bandwidth is a consideration. These
readings are from the server.

Started with two users. Bandwidth was at around 8Mb/s, pretty evenly
divided between up and down.

Added third user and the bandwidth went to 15Mb/s again fairly evenly
divided with 8M incoming and 7M outgoing.

The fourth user was having issues with their network connection at their
home, but we saw the bandwidth jump to 20Mb/s for a brief period; too
short for Zabbix to graph (it does 5 minute averages). When the fourth
user disconnected, bandwidth dropped back to 16Mb/s.

Finally, with three users, one user dropped their camera quality
(through the Jitsi interface) to "Low", with an almost immediate drop
from 15-16Mb/s to 13Mb/s. The other two followed suit, dropping their
image quality and we were able to achieve 12Mb/s.

We then stopped the test. Again, not as much information as I would have
preferred, but it gives an indication to those who were wanting to
install a video server on their own machines with limited bandwidth.
Changing image quality is on a per-user basis, on their individual
connection; I'm not aware of any way to do that on the server. However,
there is a lot I don't know about this system.

Rod

On 4/7/20 2:11 PM, Rod Rodolico wrote:
> yes. There is an icon on the screen (browser based) showing network
> speed and drops. It will automagically change frame rate, though that is
> not seamless. However, there is a menu item that allows you to change
> your image quality from the browser session.
>
> The 8Mb/s was on my server. I believe my client in most sessions has
> been running a lot less, though I haven't checked that yet. I'm guessing
> around 2Mb/s, but not sure.
>
> Rod
>
>
> On 04/07/2020 09:45 AM, Hendrik Boom wrote:
>> On Tue, Apr 07, 2020 at 01:05:10AM -0500, Rod Rodolico wrote:
>>> I just installed a Jitsi instance on one of my old servers last week. My
>>> 15 year old granddaughter did most of the work. We built it as a Xen
>>> virtual with 10G disk, 4G RAM and 4 dedicated cores. We used ASCII as
>>> the Distro.
>>>
>>> Tests so far have been two people (test for more planned for later this
>>> week). With two people in the video conference, we ran about 8Mb/s
>>> pretty steady the whole hour. Processor was about 40% on all four cores
>>> and RAM was pretty much untouched.
>>
>> Looks a little tight. My DSL link provides 6 Mbps. I wonder if it
>> adjusts the video quality or framerate to match the aailable bandwidth.
>>
>> -- hendrik
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>

--
Rod Rodolico
Daily Data, Inc.
POB 140465
Dallas TX 75214-0465 US
http://dailydata.net
214.827.2170