I mostly pipe everything through SDL. mplayer works through SDL, and most games use SDL. Like when I'm playing a shooting game when I press fire, I hear the shooting sound about a second later. Can I do anything to SDL to give it realtime priority? And what about artsd. When I click the run with realtime priority check-box it doesn't do much? On Sun March 21 2004 05:59 am, Tom 'Needs A Hat' Mitchell wrote: > On Sat, Mar 20, 2004 at 09:04:10PM -0500, S. Gongola wrote: > > It seems like I can only get real time sound without a delay when I'm > > logged in only as root. How can I get real time sound when I'm logged in > > as a user. What device permissions do I need to change, or adding the > > user to a certain group can solve the problem. > > If the delays are not an issue for 'root' and they are for you when > you are a normal 'user' then the issue is real time scheduling (or are > you doing more stuff). > > You did not indicate which player you are working with. > > For xmms there is a config option "Use realtime priority when > available". But "realtime priority" is restricted to root. N.B. with > real time scheduling it is possible to apparently lock up a system. > > Anyhow RTS it is not available to mortals. So.... > > First increase the buffer size. > > Next perhaps open a window for a "su/su -" shell and run it there. > > If 'root' is not an option the next trick is a bit more complicated. > Since xmms can browse, read and write files there are risks! > > If you know, understand and trust xmms AND it's plugins build a > helper... If you try marking xmms SUID=root and run it from a shell > prompt you will see this helpful hint that might apply to any player > that has RTS system calls coded in it: > > Gtk-WARNING **: This process is currently running setuid or setgid. > This is not a supported use of GTK+. You must create a helper > program instead. For further details, see: > > http://www.gtk.org/setuid.html > > Refusing to initialize GTK+. > > Good luck. > mitch > > -- > T o m M i t c h e l l > /dev/null the ultimate in secure storage.
