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Subject: Re: general question re: performance
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Glenn Becker :

> I'm running 6.2 on an old but not ancient Dell laptop, PIII 1000MHz,
> which now has seven operating systems on it. I have noticed recently that
> the graphics-heavy planetarium program Stellarium -- which runs great on
> my Debian GNU/Linux system -- barely creaks along on FreeBSD and is
> basically unusable.

You need "direct rendering" to be enabled from Xorg.
Check it with glxinfo
$ glxinfo
name of display: :0.0
display: :0  screen: 0
direct rendering: Yes <=== must be yes

What is your graphics card ?

> Is it generally accepted that a custom kernel with all the fat
> trimmed will help?

No.
(stellarium is very nice!)