Date: Sun, 22 May 2005 13:35:05 +0200 From: Pav Lucistnik <pav@FreeBSD.org> To: Damian Gerow <dgerow@afflictions.org> Cc: freebsd-amd64@FreeBSD.org Subject: Re: mplayer, amd64, and CPU flags Message-ID: <1116761705.23538.7.camel@hood.oook.cz> In-Reply-To: <20050522043251.GA87263@afflictions.org> References: <20050521022130.GW52914@afflictions.org> <20050521064120.GA51907@xor.obsecurity.org> <20050522043251.GA87263@afflictions.org>
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Damian Gerow p=ED=B9e v ne 22. 05. 2005 v 00:32 -0400:
> Thus spake Kris Kennaway (kris@obsecurity.org) [21/05/05 02:42]:
> : > This is with automagic CPU detection compiled in, but when I take it =
out, I
> : > still get the same thing.
> :=20
> : Look at what the port does..it looks like it only enables runtime
> : detection support on i386. Talk to the maintainer.
>=20
> The wording in the Makefile describing WITHOUT_RUNTIME_CPUDETECTION -- wh=
ich
> I traditionally define when building mplayer -- infers that by defining i=
t,
> all possible CPU flags are assumed set, and it is up to the builder to
> "explicitly disable" them. In other words, without using runtime detecti=
on,
> it's still borked.
>=20
> I'll take that up with the maintainer as well. Though it looks like the
> problem is well on its way to being solved.
>=20
> FWIW, by manually enabling the various flags, I see DVD decryption jump u=
p
> at least five frames per second, from anywhere between seven and ten to a=
t
> least fifteen. That's a 50% speed increase.
I haven't noticed any speedup on DVD playback from these flags.
What helped me immensely was moving to xorg-server-snap, which can do
DMA'ed xv feeding on radeon driver. That cut down CPU usage inside xorg
from 30% to 5% on DVD playback with mplayer ...
--=20
Pav Lucistnik <pav@oook.cz>
<pav@FreeBSD.org>
Stupidity got us into this mess -- why can't it get us out?
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