Just tried it on one of my servers, I get a ratio of 0,7% in ssl vs non-ssl ab benchmark, without keepalive. With keepalive it gets to 1/3.
However, I noticed something else a year or so ago, never figured out the cause. I can't get apache to work faster than 11k req/s, no matter how many concurrent clients I use. On the same hardware nginx goes up to 30k req/s. (request here contains mere 14 bytes of static content, small compared to even HTTP headers it consumes). Here's the graph: http://blog.a2o.si/wp-content/uploads/2009/06/HelloWorld.txt.png And the whole article (a bit dated now): http://blog.a2o.si/2009/06/24/apache-mod_php-compared-to-nginx-php-fpm/ b. On 30 April 2011 13:57, Tushar Chavan <tushar.cha...@hotmail.com> wrote: > Hi Ishita, > > I am also same facing problem. Can you please let me know if you find any > solution. > > Best Regards, > Tushar. > > > Date: Tue, 12 Apr 2011 22:09:39 -0400 > > From: ishim...@gmail.com > > To: users@httpd.apache.org > > CC: traw...@gmail.com > > Subject: Re: [users@httpd] Apache is too slow with SSL > > > > Hi Jeff, > > > > SSL session cache is utilized maximum as out of 30000 requests 29850 > > requests was served as "session reuse" during my stress test > > > > Thanks > > > > On Fri, Apr 8, 2011 at 10:06 AM, Jeff Trawick <traw...@gmail.com> wrote: > > > On Wed, Apr 6, 2011 at 11:09 PM, Ishita Kapadiya <ishim...@gmail.com> > wrote: > > >> Hi Jeff, > > >> > > >> both ab and JMETER is using keep alive. > > > > > > keepalive and reusing SSL sessions isn't the same thing > > > > > > reusing the SSL session (avoiding the expensive part of the handshake) > > > deals with what happens when the client opens a subsequent TCP > > > connection (after sending however many keepalive requests on a prior > > > connection) > > > > > >> I am using SSL session cache > > >> in the config as - > > >> SSLSessionCache "shmcb:/path to logs/ssl_scache(512000)" > > >> > > >>> Even if so, it is worth using mod_ssl tracing to confirm that the > > >>> combination of client/server behavior results in a reasonably high > > >>> session cache utilization. > > >> > > >> Please let me know how can i trace mod_ssl to confirm session cache > utilization. > > > > > > with LogLevel debug, look for messages like > > > > > > Inter-Process Session Cache: request=GET status=XXX > > > > > > XXX will indicate whether or not the session was found in the cache > > > > > > --------------------------------------------------------------------- > > > The official User-To-User support forum of the Apache HTTP Server > Project. > > > See <URL:http://httpd.apache.org/userslist.html> for more info. > > > To unsubscribe, e-mail: users-unsubscr...@httpd.apache.org > > > " from the digest: users-digest-unsubscr...@httpd.apache.org > > > For additional commands, e-mail: users-h...@httpd.apache.org > > > > > > > > > > --------------------------------------------------------------------- > > The official User-To-User support forum of the Apache HTTP Server > Project. > > See <URL:http://httpd.apache.org/userslist.html> for more info. > > To unsubscribe, e-mail: users-unsubscr...@httpd.apache.org > > " from the digest: users-digest-unsubscr...@httpd.apache.org > > For additional commands, e-mail: users-h...@httpd.apache.org > > >
