Not sure if this is the correct platform to ask, but just wondering, if there are, say 500 to 1,000 clients, connecting to Xibo CMS, is there a tool that can evaluate the performance / bottleneck for such tests? And how many connections can Xibo CMS can handle at one time?
Unfortunately there isn’t a tool - the answer is too subjective for us to publish something general that will almost certainly be inaccurate in some situations.
The quantity of Displays is only 1 piece of the pie and should actually be given the least weighting in any calculation. The load of the system depends on the usage, much more than the quantity.
For example - a CMS with 500 displays, only shows HD video which changes once per month. There are a lot of displays, but they contact the CMS infrequently so their CPU/Memory resource usage is low, however their disk usage is high.
Alternative example being a CMS with 50 displays that has regularly changing content, 3 times a day. They don’t show video, only images so their disk usage is low, but they contact the CMS frequently to keep up to date.
The best thing to do by far is run a real world example with your content on one or two displays - measure performance, disk/bandwidth usage and then extrapolate to a larger sample.
I hope this is useful.