unknown directive "aio" in Nginx 0.8.14

Dinh Pham lists at ruby-forum.com
Thu Sep 10 13:26:14 MSD 2009

Hi all,

I installed Nginx 0.8.14 to try out a new feature: AIO support. Also, I
compiled Nginx with --with-file-aio

However, Nginx show warnings that it does not support AIO:

Starting nginx: [emerg]: unknown directive "aio" in

Here is my configuration

        location ~* ^\/files\/(.+) {
            alias /home/files/$1;
            aio on;
            # sendfile off;
            directio 512;

Is this feature experimental and withdrawn?
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