Messages in this thread | | | Subject | Re: weird X problem - priority inversion? | From | Lee Revell <> | Date | Fri, 27 May 2005 13:39:17 -0400 |
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On Fri, 2005-05-27 at 10:34 -0700, David Lang wrote: > 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.
That was a problem in the NT 4.0 days, but not lately.
Lee
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