Mailing-List: contact users-help@httpd.apache.org; run by ezmlm
Precedence: bulk
Reply-To: users@httpd.apache.org
content-class: urn:content-classes:message
Date: Wed, 10 Mar 2004 07:51:59 -0000
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Message-ID: <E774861E3642D611857E0008020137680D59D3FF@exchuk22.eur.nsroot.net>
Thread-Topic: [users@httpd] Images slow to load in CGI script
Thread-Index: AcQF6YzhfUcwldP/SKaclIJNUkPQqAAiSFuw
From: "Merrell, Vince [IT]" <vince.merrell@citigroup.com>
To: <users@httpd.apache.org>
Subject: RE: [users@httpd] Images slow to load in CGI script

Well, the CGI itself isn't fast.
It's retrieving some data in real time from a database.

I guess we're into 5 or 6 seconds retrieving the data (although this is =
variable it's probably no more than 10 seconds at worst) and processing =
it before the form can be generated based on the data received.

The Perl contains $|=3D1; to stop Perl buffering the output although =
unsetting this doesn't make any difference to the end result, the images =
are still slow to load.

One thing I have noticed while tailing Apache's access_log file is that =
the GET entry for the image doesn't appear until the time the image =
arrives in the browser:

x.y.99.107 - web_server [10/Mar/2004:07:44:30 +0000] "POST =
/entitlements_admin/group_remove_dev/show_entitlements.cgi HTTP/1.1" 200 =
7550
x.y.99.107 - - [10/Mar/2004:07:44:33 +0000] "GET /info2.gif HTTP/1.1" =
200 195

The POST of the CGI appears in the log as the CGI ends and the table is =
drawn. The GET for the GIF file appears 3 to 5 seconds after the the CGI =
finishes. Does this imply the browser is delaying requesting the image? =
#

As far as KeepAlive suggestions from Aur=E9lien, my httpd.conf contains =
the following:

KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 15
Timeout 300

Based on the comments in httpd.conf all these values seem reasonable.

Vince

-----Original Message-----
From: Marty Landman [mailto:MLandman@face2interface.com]
Sent: 09 March 2004 15:12
To: users@httpd.apache.org
Subject: RE: [users@httpd] Images slow to load in CGI script


At 10:02 AM 3/9/2004, Jonas Eckerman wrote:

>It could be that the browser first waits for the complete document =
before=20
>downloading/displaying the images. If this happens and it takes a long=20
>time for the document to finish (even thouhg the actual contents of it=20
>might have beens completely transferred), the symptoms could be what =
you=20
>describe.

Jonas, if that's the case then is it something controlled by httpd.conf, =
or=20
is there nothing that can be done other than making sure the cgi =
finishes=20
up quickly?

Marty Landman   Face 2 Interface Inc.   845-679-9387
FormATable  DB: http://face2interface.com/Products/FormATable.shtml
Make a Website: http://face2interface.com/Home/Demo.shtml
Free Formmailer: http://face2interface.com/Products/Formal.shtml =20


---------------------------------------------------------------------
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-unsubscribe@httpd.apache.org
   "   from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@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-unsubscribe@httpd.apache.org
   "   from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org