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From Tim Funk <funk...@joedog.org>
Subject Re: Tomcat and Apache by Proxy http connections slow but https fast
Date Tue, 17 Aug 2004 23:13:09 GMT
AFAIK - mod_proxy does not cache DNS lookups. It is looked up on every 
request. So a slow lookup could be your problem.

-Tim

Duncan Houston wrote:
> Sorry folks, more info (hope somebody will has experienced these problems as
> well!).
> 
> I can hit 2 JSPs in different webapps, both proxied behind Apache, both on
> HTTP. The one is fast, the other slow. What could be causing this? Apache
> config? DNS lookup issues?
> 
> 
>>-----Original Message-----
>>From: Duncan Houston [mailto:houstond@mweb.co.za]
>>Sent: 17 August 2004 23:28
>>To: Tomcat Users List
>>Subject: RE: Tomcat and Apache by Proxy http connections slow but https
>>fast
>>
>>
>>OK, I made a mistake there (sorry). The issue does still seem to be that
>>connecting to a webapp over SSL is faster than connecting to
>>another webapp
>>over non-SSL, both running in the same Tomcat (JBoss) instance and proxied
>>behind Apache.
>>
>>Any ideas why the SSL version would be fast and the normal (HTTP) version
>>not?
>>
>>
>>>-----Original Message-----
>>>From: Duncan Houston [mailto:houstond@mweb.co.za]
>>>Sent: 17 August 2004 18:03
>>>To: Tomcat Users List
>>>Subject: RE: Tomcat and Apache by Proxy http connections slow but https
>>>fast
>>>
>>>
>>>Some more info. The problem does not seem to be with HTTP vs HTTPS (was
>>>testing app A on HTTPS, app B on HTTP B - problem seems that A is faster
>>>than B whether on HTTP or HTTPS).
>>>
>>>I have a number of .war files deployed to JBoss's /deploy directory
>>>(automatic deployment). Let's call them A and B, and let's say
>>
>>each has an
>>
>>>image folder. Accessing an image from inside A's folder is fast, but
>>>accessing an image from B's folder is slow.
>>>
>>>Proxy setup appears to be the same for both apps.
>>>
>>>
>>>
>>>>-----Original Message-----
>>>>From: Duncan Houston [mailto:houstond@mweb.co.za]
>>>>Sent: 17 August 2004 17:19
>>>>To: tomcat-user@jakarta.apache.org
>>>>Subject: Tomcat and Apache by Proxy http connections slow but
>>
>>https fast
>>
>>>>
>>>>Hi
>>>>
>>>>Background: Firstly I should state that I am running Tomcat 4.0.1
>>>>with JBoss
>>>>2.4.4, Sun JVM 1.3. In front of that, Apache 2 is running. All
>>>
>>>of this is
>>>
>>>>running on RedHat. Requests are passed through to Tomcat by
>>
>>proxy, using
>>
>>>>rewrite rules. I know, I should be running a newer version of JBoss &
>>>>Tomcat, and should be using mod_jk, but haven't had the time
>>
>>to upgrade
>>
>>>>quite yet.
>>>>
>>>>The problem: Connections to webapps run on Tomcat via http are
>>>>slow over the
>>>>internet. It appears that establishing a new connection (for
>>>>page, images on
>>>>page etc) takes time - once established (seconds later) the data gets
>>>>transferred quickly. But, interestingly, connecting via https
>>>
>>>is fast. My
>>>
>>>>test server, when hit on a test intranet, is very quick to respond.
>>>>
>>>>Any ideas? I have set enableLookups="false", for what that is worth.
>>>>
>>>>Help would be much appreciated.


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