Remote Desktop Performance
Posted on 2014-01-16
I apologise in advance if this question is too complex to answer with a single post, however we are trying to optimise our remote desktop performance to our clients which I have some gaps in my understanding of I guess the basics of how the packets are flying around. So some background info:
-We have multiple virtual servers at our office which clients connect into via RDP
-We have an 80Mbps fibre link of which its bandwidth is never more than 20%
Why is it that slower ADSL internet connections (say less than ~5Mbps) have very poor RDP performance, yet when monitoring bandwidth utilisation on the WAN port of the router, traffic never gets higher than about 20% of the bandwidth with an occasional spike here and there..
Whereas faster ADSL connections (say ~10Mbps+) have much better general performance but on the router, traffic still never gets higher than about 2Mbps with occasional spikes
We use Ericom Blaze RDP server/client which compresses the data a bit and definitely helps with performance to a small degree, especially when scrolling.
-In all our cases latency to our server is the same with maybe up to 5ms difference
-In the cases I am taking into account similar load at the clients end
-I thought it may be failings with the routers we use however tests with various brands still yield the same results
-Am i wrong in assuming that if I am at the clients end and performance is generally slow from say scrolling a graphics rich web page, shouldn't I expect to see their Internet connection being used to it's full potential?
And one more thing, this only applies to ADSL connections, with Fibre connections, usage is utilised as expected for their bandwidth.
Thanks in advance