How many clients

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Vegaanders
OpenVpn Newbie
Posts: 1
Joined: Mon Nov 16, 2009 10:47 am

How many clients

Post by Vegaanders » Mon Nov 16, 2009 11:02 am

Hi from a newcomer on the forum

I have the following question.
We will setup a OpenVpn server on a Dedictaed Linux Server is a Datacenter. All internet connections from our staff will go through this Server. My question is simple perhaps but not for me. How many clients will get a reasonable speed on their internet connection if the data center guarrantee us 500 Mbit/s

Regards

Anders, Frankfurt

Douglas
Forum Team
Posts: 285
Joined: Wed Aug 27, 2008 2:41 am

Re: How many clients

Post by Douglas » Wed Nov 18, 2009 1:33 am

Vegaanders wrote:Hi from a newcomer on the forum

I have the following question.
We will setup a OpenVpn server on a Dedictaed Linux Server is a Datacenter. All internet connections from our staff will go through this Server. My question is simple perhaps but not for me. How many clients will get a reasonable speed on their internet connection if the data center guarrantee us 500 Mbit/s

Regards

Anders, Frankfurt
You can use as many clients as the 500 Mbit/s will allow; however, that doesn't mean all of your clients will saturate their local connection. Some will get poor speeds some will get better.

mwandelaar
OpenVPN Super User
Posts: 219
Joined: Mon Nov 23, 2009 8:24 pm

Re: How many clients

Post by mwandelaar » Mon Nov 23, 2009 8:57 pm

Douglas wrote: You can use as many clients as the 500 Mbit/s will allow; however, that doesn't mean all of your clients will saturate their local connection. Some will get poor speeds some will get better.
Besides that, i.e. custom ADSL-providers share their bandwith with 20 ~ 50 more customers then their bare bandwith (overbooking). Accounting this on your server, you could 10 ~ 25 times "overbook" your server. (Take care: data has to travel twice through your server, once as upload and once as download!)

Having said that, pushing 10k users (that is, selling roughly 25 mbit per user) through a single server will definitly give you problems with cpu-load, filedescriptors, memory-allocations etc.

Cheers,

Max

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