On Fri, 27 May 2005, Lee Revell wrote:
On Mon, 2005-05-23 at 01:11 -0700, David Lang wrote:
remember that the low pri screensaver is just generating the image to be
displayed, it's the high pri X server that's actually doing the work to
display it.
Then there needs to be some mechanism to handle it, either in X or the
kernel. Other OSes do not require you to turn off the screensaver to
avoid a DoS - they do the obvious thing and run the screensaver at the
lowest priority.
The problem may be software 3D rendering (I did not have the VIA driver
enabled as I did not realize it was in the kernel yet). Maybe the X
server should do the work in a low priority thread. But it sure
shouldn't DoS the system. Other OSes do not have this problem.
Actually they don't (or at least didn't the last time I took windows
training), if you have a CPU intensive screen saver on a windows server it
will seriously load down the box when it kicks in.
David Lang
--
There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies. And the other way is to make it so complicated that there are no obvious deficiencies.
-- C.A.R. Hoare
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