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On Sat, Jan 26, 2008 at 07:39:47PM +0900, Mike Mazur wrote |
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> CFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer" |
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The -march option may or may not invoke mmx, sse, sse2, etc in the |
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CFLAGS line but it definitely does *NOT* invoke them in the USE variable. |
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> USE="gtk gtk2 gnome -apm -eds -emboss -gstreamer -qt -qt3 -qt4 -kde |
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> -ldap -arts -esd -oss -xv X a52 aac acpi alsa avahi bash-completion |
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> bluetooth cdr cjk crypt dbus dvd dvdr exif firefox gphoto hal ipod |
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> jpeg mbox mp3 nptl nptlonly ogg opengl png pulseaudio spell ssl |
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> startup-notification svg theora tiff vorbis wifi xinerama" |
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I have mmx, sse, sse2, and a few AMD-specific options in my USE |
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variable. Can you show us the output of the command... |
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grep flags /proc/cpuinfo |
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Then we can see what to add. If you are *NOT* taking advantage of the |
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available extensions, you won't get the available oomph out of your cpu. |
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It's not so much a matter of raw speed as ability to do complex |
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calculations in the chipset microcode, rather than painfully emulating |
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it in software. One of the features of Gentoo is customizing your build |
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to get the most out of your cpu. Use it... within reason. |
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mplayer also takes a few custom flags. In /etc/portage/package.use I |
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have the entry |
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media-video/mplayer custom-cflags i8x0 real 3dnowext mmxext |
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With an Intel cpu, you obviously don't want "3dnowext", but there may |
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be other stuff worth using. To find out what's available, use... |
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grep mplayer /usr/portage/profiles/use.local.desc | less |
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-- |
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Walter Dnes <waltdnes@××××××××.org> |
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I'm not repeating myself |
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I'm an X Window user... I'm an ex-Windows-user |
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-- |
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gentoo-user@l.g.o mailing list |
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