SSL slow on nginx

[Steve Holdoway]

Hi!
On Sat, 2014-06-28 at 01:14 -0400, khav wrote:
> For my site , ssl seems to be slow even though i got A+ on sslabs
> (implemented ocsp stapling, Forward Secrecy , spdy) 
> 
> Here is the result from pingdom 
> 
> http://tools.pingdom.com/fpt/#!/cc2MfH/https://www.filterbypass.me/
> 
> 
> Notice the high connect time and high ssl negociation time 
> 
> 
> Here is my nginx conf 
> 
> server {
>     listen       443 spdy default_server; #Change to 443 when SSL is on
> 	ssl on;
> 	ssl_certificate    /etc/ssl/filterbypass.me.crt; #(or .pem) 
>     ssl_certificate_key    /etc/ssl/filterbypass.me.key.nopass;
> 	ssl_client_certificate /etc/ssl/intermediate.crt;
> 	ssl_protocols SSLv3 TLSv1 TLSv1.1 TLSv1.2;
>    ssl_ciphers
> ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS;
>     ssl_prefer_server_ciphers on;
> 	ssl_buffer_size 8k;
>     ssl_session_cache shared:SSL:10m;
> 	ssl_dhparam /etc/ssl/dhparam.pem;
>     ssl_session_timeout 10m;
> 	ssl_stapling on;
>     ssl_stapling_verify on;
> 	ssl_trusted_certificate  /etc/ssl/trustchain.crt; 
> 	resolver 8.8.8.8 8.8.4.4;
> 	add_header Strict-Transport-Security "max-age=31536000;
> includeSubDomains";
>   #rest of config goes here 
> }
> 

Setting up a local DNS resolver, and adding it in as the first one may
make a bit of a help, as may implementing SPDY.

However, ( using webpagetest as my preferred tool... from Dulles as the
server is reported to be in Utah:
http://www.webpagetest.org/result/140629_3J_518/ ) I'd say that the
problem may well be with the available power on the server itself: for
example, it takes .8s to download a 20KB woff file. Given the services
that you're wanting to offer, I think you're going to need a load more
grunt.

hth,

Steve
-- 
Steve Holdoway BSc(Hons) MIITP
http://www.greengecko.co.nz
Linkedin: http://www.linkedin.com/in/steveholdoway
Skype: sholdowa