Has anyone actually done a comparison of the interactive speed of
xhost vs ssh
for a graphics-intensive session (say rotating a large protein
molecule)? If
you are on a sufficiently private network so the security concerns are
minimal
maybe the simplicity/speed of the xhost connection would make the
security of
the ssh connection an unwarrented burden.
Actually, for a program which does that properly (with OpenGL) the
tunnelled version shouldn't be too bad, since the actual data
travelling over the connection is quite small.
For applications which manipulate bitmap images rather than vector
graphics, the performance difference is extremely marked, and ssh
tunnelled connections can be really painful. A good example of this is
the DNA sequence alignment program 'dotter' which rapidly updates a
very large 24-bit bitmap image. Its performance is quite poor over an
ssh tunnel, even on a gigabit network.
Tim
--
Dr Tim Cutts
Informatics Systems Group, Wellcome Trust Sanger Institute
GPG: 1024D/E3134233 FE3D 6C73 BBD6 726A A3F5 860B 3CDD 3F56 E313 4233
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