Gentoo Archives: gentoo-user

From: Walter Dnes <waltdnes@××××××××.org>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Choppy video playback
Date: Mon, 28 Jan 2008 02:07:35
Message-Id: 20080128020802.GA31587@waltdnes.org
In Reply to: Re: [gentoo-user] Choppy video playback by Mike Mazur
1 On Sun, Jan 27, 2008 at 09:18:26PM +0900, Mike Mazur wrote
2
3 > The output of `grep flags /proc/cpuinfo` is:
4 >
5 > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
6 > mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx
7 > lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2
8 > ssse3 cx16 xtpr lahf_lm
9
10 The "mmx", "sse", "sse2", and "sse3" items look relevant. Change your
11 CFLAGS line (watch the linewrap)...
12
13 CFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer -mmmx -msse -msse2 -msse3 -mfpmath=sse"
14
15 The "-mmmx -msse -msse2 -msse3" flags may be redundant if "prescott"
16 implies them, but they won't hurt. The "-mfpmath=sse" may or may not
17 be redundant. In a worst case, it won't hurt. It greatly speeds up
18 floating-point calculations on X86-type systems (including AMD). In
19 another message in this thread, you said...
20
21 > xv is not listed when I type `mplayer -vo help`.
22
23 This is to be expected. Since you have "-xv" in USE, xv support is
24 blocked. Did you have any problems with xv that caused you to block it?
25 If not, change "-xv" to "xv" in USE in /etc/make.conf. And while you're
26 at it, add...
27
28 mmx sse sse2
29
30 to your USE parameters. In /etc/portage/package.use, add the line...
31
32 media-video/mplayer ssse3
33
34 > I guess I'll need to recompile everything if I want any changes to
35 > come into effect?
36
37 Hopefully, not everything. *AFTER MAKING ALL THE ABOVE CHANGES* try...
38
39 emerge --ask --deep --newuse --update --world
40
41 The --newuse forces a recompile of every item directly affected by any
42 changes in CFLAGS or USE. The --deep forces a recompile of indirectly
43 affected items. If there don't seem to be any problems, let it rebuild
44 the listed items.
45
46 --
47 Walter Dnes <waltdnes@××××××××.org>
48 I'm not repeating myself
49 I'm an X Window user... I'm an ex-Windows-user
50 --
51 gentoo-user@l.g.o mailing list

Replies

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Re: [gentoo-user] Choppy video playback ionut cucu <cuciferus@×××××.com>