mod_proxy definitely supports HTTP/1.1 (see
http://httpd.apache.org/docs-2.0/mod/mod_proxy.html). Does this imply that
it also supports keep-alives?
Also, with mod_rewrite, we have configured apache to serve up static content
even within password-protected portions of the web-app. With mod_jk, it
always does authentication checks. I'm not sure how much performance that
buys us, but it is something.
Another config that may affect these numbers: the default apache ssl config
includes the following:
SetEnvIf User-Agent ".*MSIE.*" \
nokeepalive ssl-unclean-shutdown \
downgrade-1.0 force-response-1.0
This forces all access from MS IE via https to downgrade to http/1.0. I
have played around with this, and sure enough, without this, IE periodically
shows blank pages while browsing secure pages. This configuration was in
place for both mod_jk and mod_proxy tests.
Regardless, the numbers we have obtained speak very clearly to us. Please
respond if you find that your benchmarks show something else - I would love
to make my site go faster!
In the words of Mr. Schaefer: Have Fun!
-Larry
> I think that benchmarking that shows mod_proxy as faster than mod_jk
> is highly suspect.
>
> While mod_jk does faff about a lot - changing strings into single
> bytes and then back again, mod_proxy does not use persistent connectons
and must
> reestablish a TCP/IP connection for each request.
>
> I would only expect mod_proxy to be faster if the load presented was
> HTTP/1.0 or not kept-alive HTTP/1.1
>
> If mod_proxy does now support HTTP/1.1 persistent connections, then that
> is very good news as it is a much better way to forward requests (use the
> protocol rather than invent a new one!).
>
> cheers
>
>
>
>
> Larry Sanderson wrote:
> > These are consistant with our results. We use mod_proxy and mod_rewrite
in
> > production becaus it has given us a consistent performance edge over the
> > alternatives (mod_jk, no apache, etc...). Unfortunaty, last I checked,
Tux
> > does not support ssl, so that was not an option for us.
> >
> > -Larry
> >
> >
> >>As of Apache 1.3.23 I think, Apache supports HTTP/1.1 compliance in it's
> >>mod_proxy mechanism, meaning it can take advantage of persistent
> >>connections. That goes for the 2.x series of Apache as well.
> >>
> >>Using Apache 1.3.26, JBoss 2.4.4 and several different JSP/Servlet
engines
> >>(Tomcat 3.2.4, Jetty 3.0,3.1, and Resin 2.0.5) I performed many load
tests
> >>using LoadRunner against the above configurations. However, for each
> >>scenario, I tested once using mod_jk w/ ajp13 connector and a second
time
> >>using mod_rewrite and mod_proxy passing off to the http listener of
> >
> > whatever
> >
> >>jsp/servlet engine that was running. In _every_ example, the use of
> >>mod_rewrite and mod_proxy together improved performance over using
> >>mod_jk/ajp13. And this is in an application that uses Struts heavily. I
> >
> > am
> >
> >>currently setting up a configuration with Tomcat 4.0.3 so I can try
> >
> > testing
> >
> >>with mod_webapp and see how it performs.
> >>
> >>I then found even better performance on Linux, by using the TUX kernel
web
> >>server in place of Apache and passing on all non-static requests on to
the
> >>specific jsp/servlet container being used at the time.
> >>
> >>As a result, I would have to say that my testing reveals that using the
> >>latest Apaches with mod_proxy will out perform the mod_jk scenarios.
> >>
> >>Thanks,
> >>Mike
> >>
> >>----- Original Message -----
> >>From: "Thomas T. Veldhouse" <[EMAIL PROTECTED]>
> >>To: <[EMAIL PROTECTED]>
> >>Cc: <[EMAIL PROTECTED]>
> >>Subject: Re: [JBoss-user] Apache 1.3 and JBOSS 3.0.2 (w/tomcat or
w/jetty)
> >>Date: Thu, 5 Sep 2002 22:48:32 -0500
> >>Reply-To: [EMAIL PROTECTED]
> >>
> >>This link points to an area that really applies to Apache2 and mod_jk2
(or
> >>proxy which has disadvantages). I was under the impression it (Jetty)
> >
> > would
> >
> >>work with mod_jk and Apache 1.3.
> >>
> >>J. Michael Savage
> >>Datastream Development
> >>
> >><mailto:[EMAIL PROTECTED]>
> >>(800) 955-6775 x7646
> >>
> >>
> >>
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> >>
> >
>
>
> --
> Greg Wilkins<[EMAIL PROTECTED]> Phone/fax: +44 7092063462
> Mort Bay Consulting Australia and UK. http://www.mortbay.com
>
>
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