[sldev] UDP to TCP/HTTP - performance issues?

[Callum Lerwick]

On Wed, 2007-11-14 at 23:57 +1100, Tateru Nino wrote:
> I'm noting a suspicious stall in the viewer when a presence popup
> happens. Disabling the popup does not seem to change the behaviour.
> Getting a friend to log in and log out, the viewer still stalls for a
> second or so around the time the popup _would_ have appeared if it were
> enabled. That's another data point for you.

I've noticed this too. My wife has even complained about it. At one
point it would even crash, though that seems to have been fixed.

I've also noticed that during periods of high (total?) packet loss, the
viewer will completely freeze. Which happens often when you're on a less
than stellar wireless connection. No screen refreshes, CPU usage drops
to zero. Why is network IO capable of blocking the graphics engine? The
rest of the machine remains responsive, so I don't think its an
X11/OpenGL problem.
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