Configuração de gzip no vhost.

gzip.conf

# colocar em /etc/nginx

##turn on gzip compreesion
	gzip on;
	gzip_static on;
	gzip_comp_level 9;
	gzip_min_length 1100;
	gzip_types text/plain image/png image/gif image/jpeg application/x-javascript text/css text/xml application/xml application/xml+rss text/javascript;
	gzip_vary on;
	gzip_http_version 1.1;
	gzip_disable "MSIE [1-6]\.(?!.*SV1)";