wine强制全屏游戏在窗口模式下运行

wine explorer /desktop=1024x768 whatever.exe

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用psyco优化python程序

psyco是python的一个扩展，它通过编译python代码来提升python程序的速度。

使用的方法很简单，在python程序里加上下面两句就可以了：

import psyco
psyco.full()

psyco会在程序运行时编译部分代码（具体怎么编译还不清楚），因此程序的初始化时间会增加，但运行速度会变快。

这里有一篇gentoo-wiki介绍用psyco优化portage速度的：

http://gentoo-wiki.com/TIP_Speed_up_portage_with_Psyco

这篇文章中说，用了psyco以后，portage性能可以提升2－5倍，不过同时也警告说psyco现在还不稳定，可能会带来很多问题，因此不推荐使用。

我试了一下，用了psyco的emerge速度快多了（看来2－5倍不是吹的），有一些不影响使用的小问题，比如没有用sudo的emerge会抛异常、确认删除时选“no”也会抛异常。我猜测这都是因为psyco对try-except语句支持得不好，原来的程序里catch住的异常现在引发了psyco的新异常。

不过这些问题都不影响正常使用。继续观望。

另外，有些别的python程序原生支持psyco，像Frets On Fire，我看了它的源码，它会初试使用psyco。我装了psyco以后再玩Frets On Fire，感觉快了一点，不过没有portage那么明显。

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HOWTO XDMCP in Gnome

XDMCP stands for "X Display Manager Control Protocol" and is a network protocol. It allows a way of running X-Terminal on your PC (or Mac) and uses the X Server to provide a client/server interface between display hardware (the mouse, keyboard, and video displays) and the desktop environment while also providing both the windowing infrastructure and a standardized application interface. The X-Terminal can be displayed with an individual window or multiple windows, based on your X window system's software capabilities and setup.

On your X-Server, you must tweak the configuration of your graphical login manager (displaymanager).

for GDM, you need to change the [xdmcp]-section in your configfile:
/etc/X11/gdm/custom.conf

[xdmcp]
Enable=true

Depending on how your gdm.conf/custom.conf is set up, you might also need to add or change the [greeter] section as shown below. Without this, you will not be able to XDMCP in to your server.

[greeter]
Browser=true


How to use XDMCP

on the remote machine you can either use Xnest or simply X:
$ X -ac -query servername :1
or
$ Xnest -ac -query servername :1

where servername is your servername or IP. :1 is the display number. (:0 should be your running X-Server)

To change screen resolution of Xnest, use "geometry" option:
$ Xnest -geometry=1280x800 -ac -query servername :1

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