ubervilla.blogg.se - Nomachine runnoing slow

This touches another aspect of remote control. Some of them are optimized for small bandwidth, some for good image quality and some for low latency.

Most VNC servers/clients support multiple compression algorithms.

To improve your VNC remote-control speed you can do the following: Not even speaking about having to re-encode the Full-HD images on screen again before sending them to the VNC client. Some older Dual-Core machines are even at the limit when decoding Full-HD video content. However for full-screen video transfer it does not help a lot since the whole screen has to be re-transferred too often.Īs written above current machines will probably be unable to rel-time encode your screen content in Full-HD and stream it to a remote-control application since your host will have to decode the video content and then re-encode the raw images before sending them to the network. This usually saves A LOT of bandwith and processing power. First of all they try to detect the screen changes and transfer the (compressed) image of the changes only. Well, there are a couple of "tricks" which are applied by video codecs and remote control and screen-sharing utilities.

Less strong compression in turn will require more network bandwidth which might become an issue on low-bandwidth connections like the internet.

Usually such strong compression is unsuitable for real-time applications like remote control. For example encoding a 90 minutes movie in H.264 in high quality often takes more than 4 hours compression time on my Athlon X2 4450e server. Strong compression needs a lot of CPU power.If you use VNC then your host computer has to take screen snapshots and compress them before sending them on to the network. In video streaming you typically transfer a pre-compressed video stream via the network. NoMachine and ssh can be used through tunnels, but RStudio Server is purely based on web traffic, and I think this might work well.VNC is not comparable to video streaming. When being trapped behind a corporate firewall, the only traffic allowed to leave the firewall is over a proxy that only allows traffic over port 80. Although I have not used RStudio server across heavy firewalls, I suspect it performs a little better. This works quit well, although performance across firewalls can become slow. Using a tool like NoMachine only requires a small client application, in addition to a server-side installation of NoMachine. Plots and pdfs can also be shown inside the browser. RStudio server does not require an X session, just a good web browser.

This also does not feel ideal, although it is much better than using windows. Under Mac things work a little bit more out-of-the-box, but natively Mac OS X does not run X, and it fires up a seperate program where all X stuff happens. Although it works, I don’t really like installing a lot of additional software just to get a remote connection with graphic support. This is mainly a problem under Windows, where you need to install Cygwin to get the X server running (assuming using putty for the ssh connection). In contrast to plain ssh, RStudio server ahs the advantage that it does not require a running X server at the host. I want to go over a few of the strong points of using RStudio server to access a remote machine using R.īefore discovering RStudio Server, I would use either plain ssh with X enabled, or NoMachine NX to access a remote machine. After playing around with R studio server for a while, I decided to write a followup to my previous blog post.