最近搞一个比较大的Flex分析项目，结果FlashBuilder抗不住了，每次编译都极其慢，然后隔三差五的down掉，于是到处google如何加快速度。

然后发现了：

http://forums.adobe.com/thread/740967

http://bugs.adobe.com/jira/browse/SDK-30367

http://yerii.wordpress.com/2010/12/15/why-has-flex-sdk-4-x-x-become-sluggish-for-some-and-how-you-can-get-it-rolling-again/

正好项目用的是该死的SVN，然后Flex 4 的 OEM编译器还有这个bug，每次编译都去遍历.svn目录。

按照上面yerii博文所述，给出不少解决办法：

1. Migrate to different version control system, such as Git – not feasible in our case, generally not cool – 使用其他版本管理系统，比如Git，Mercuial等
2. Use only command-line compiler – it’s speed is not affected. But forget auto-build, background error checks… – 使用命令行编译器
3. Create mirror directory of your project without the SVN meta data and keep it synchronized – very cumbersome – 通过镜像文件夹分离.svn和源码
4. Use the HellFire Compiler – solves the problem, but it means additional license cost and also does not work as smoothly as one would wish – 使用RPC编译器 HellFire Compiler
5. File a bug report at Adobe – and wait forever before they even notice – 给Adobe提bug，然后等下去
6. Download the Flex SDK source code and repair it by yourself – 下载sdk源码，自己修改。

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<pre>private void storeTimestamps(File path)
    {
        // the fix is here:
        if(path.isHidden())    
                return;
        // end of the fix
        timestamps.put(FileUtil.getCanonicalPath(path), path.lastModified());
        for (File file : path.listFiles())
        {
            if (file.isDirectory())
            {
                storeTimestamps(file);
            }
        }
    }</pre>
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下载-解压-替换到{flex-sdk-4.x-home}/lib，我换了之后至少flashbuilder不会有事儿没事儿罢工了，至于编译速度，稍快一点点吧，依然很慢！！！（项目太大了）。