Re: Sloooowwwww ssh/scp

On 2007-05-28, Colin B. <cbigam@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
[...]
That's an interesting question. However, we do in fact need shell access.
SCP and SSH get used constantly between our machines internally, and X11
over SSH was the _real_ performance bottleneck we were (are?) trying to
solve.

Now problems with X11 may be more a function of latency than bandwidth.
Have you actually measured the bandwidth utilization during X operations?
If you haven't already, make sure compression is turned off.

I've seen this particularly with Java-based X GUIs, and I suspect that
the drawing is happening synchronously or at least partially so.
Unfortunately I've never had a chance to investigate much.

SCP provides a convenient bandwidth test, but file transfer isn't
generally our biggest obstacle.

--
Darren Tucker (dtucker at zip.com.au)
GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4 37C9 C982 80C7 8FF4 FA69
Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.
.

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