cache manager process - i/o perf

[ixos]

> The "proxy_cache_path" looks corrupted and incomplete. First of
> all, I would suggest you to make sure you are using "levels"
> parameter, see http://nginx.org/r/proxy_cache_path.

I didn't paste all of proxy_cache_path directive. Here you have all.
    proxy_temp_path /cache/tmp;
    proxy_cache_path /cache
        levels=2:2
        keys_zone=my-cache:20000m
        max_size=3355443m
        inactive=7d;

And also nginx version if needed:

# /usr/local/nginx/sbin/nginx -V
nginx version: nginx/1.5.9

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,250247,250250#msg-250250