[CentOS] Enabling X on headless server via network

Wed Jul 28 13:05:02 UTC 2010
Les Mikesell <lesmikesell at gmail.com>

Nataraj wrote:
> Stephen Harris wrote:
>> Even another ISP may not help so much.  I have Verizon FIOS and am based on
>> the East Coast.  There's a 92ms delay to reach my linode, in Fremont.
>> Any message the X client sends to the server and then waits for a reply would
>> have approx 200ms round trip time.  I doesn't take long before these message
>> delays add up to a real long delay.
>> Even my local East Coast Panix v-colo has a 15ms delay; that's a lot smaller
>> but it still adds to the time it takes to open an application; especially
>> one as complicated as firefox which may make thousands of requests.
>> Hence FreeNX which, effectively, runs an X server on your remote machine
>> and sends screen data back to your local machine.  In this case the
>> round trip times are massively reduced to effectively "local machine"
>> speeds.
> Are there any advantages to running FreeNX over vncserver?  Does it 
> perform better?

Yes, in some cases it it much better.  Vnc just sends bitmaps but FreeNX uses X 
protocol with proxy/caching to improve it.  Plus it runs over ssh by default and 
automatically sets up sessions per connection.

   Les Mikesell
    lesmikesell at gmail.com