如何检查nginx是否使用LuaJit而不是Lua?

问题描述

限时删除！！

我用nginx安装了http-lua-module，使脚本运行正常，但是现在我要确保nginx使用LuaJit而不是Lua(因为我的研究表明LuaJit更快).

I installed http-lua-module with nginx, made a script that works perfectly fine, but now I want to be sure that nginx uses LuaJit instead of Lua (because my research shows that LuaJit is faster).

我在.bushrc中添加了这些代码行:

I added to the .bushrc those lines of code :

export LD_LIBRARY_PATH=/usr/local/luajit/lib:$LD_LIBRARY_PATH
export LUAJIT_LIB=/usr/local/luajit/lib
export LUAJIT_INC=/usr/local/luajit/include/luajit-2.0

我还重新编译了nginx，现在我只想确保它使用LuaJit.

I also recompiled nginx and now I just want to be sure that it uses LuaJit.

推荐答案

编辑nginx.conf文件，在server {}块中添加location:

Edit your nginx.conf file, add a location into your server {} block:

location = /lua {
    default_type text/plain;
    content_by_lua '
        if jit then
            ngx.say(jit.version)
        else
            ngx.say("Not LuaJIT!")
        end
    ';
}

然后启动您的nginx服务器，然后在curl或您喜欢的Web浏览器中访问/lua.如果看到类似"LuaJIT 2.0.2"的输出，则说明您使用的是LuaJIT.否则，如果看到"Not LuaJIT！"，则说明您使用的是标准的Lua 5.1解释器.

Then start your nginx server and then access /lua in curl or in your favorite web browser. If you see outputs like "LuaJIT 2.0.2", then you're using LuaJIT; otherwise, if you see "Not LuaJIT!", then you're using the standard Lua 5.1 interpreter.

另一种更快的方法是检查使用nginx可执行文件链接的Lua DSO文件(如果使用动态链接)(通常是这种情况):

Another quicker way is to check the Lua DSO file linked with your nginx executable if dynamic linking is used (which is usually the case):

ldd /path/to/your/nginx/sbin/nginx|grep -i lua

如果看到类似的东西

libluajit-5.1.so.2 => /usr/local/openresty-debug/luajit/lib/libluajit-5.1.so.2 (0x00007fb3d38f6000)

然后您正在使用LuaJIT.

Then you're using LuaJIT.

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