About load balancing for HTML

Dear Sir,

Hello !

I have been using mod_backhand with apache 1.3.20 on Solaris9 x86.  In
many case , our purpose has been attained.  But when I checked the    
simple HTML contents , it did not do the load balancing for HTML      
contents.

Why ?

I have set the directive as folllows.

Backhand byAge
Backhand byLoad
Backhand bySession FSESSIONID=

We have tryed to get debugging log.  Log is as follows.

---------------------------------------------------------------------------------------
[Wed Mar 24 00:08:41 2004] [error] mod_backhand: Check 6 -- headers(6)
[Wed Mar 24 00:08:41 2004] [error] mod_backhand: Check 7 (Chunked) (Keep-Alive)
[Wed Mar 24 00:08:41 2004] [error] mod_backhand: Check 8
[Wed Mar 24 00:08:41 2004] [error] mod_backhand: (29897) Sending back fd(12).
[Wed Mar 24 00:08:41 2004] [error] mod_backhand: Request tally 1666 [33]
[Wed Mar 24 00:08:41 2004] [notice] (Translate <=) = { /test1.html, (null), (null) }
[Wed Mar 24 00:08:41 2004] [notice] (Translate =>) = { /test1.html, (null), (null) }
[Wed Mar 24 00:08:41 2004] [notice] (Postread =>) = { DECLINED }
[Wed Mar 24 00:08:41 2004] [notice] (Translate <=) = { /test1.html, (null), (null) }
[Wed Mar 24 00:08:41 2004] [notice] (Translate =>) = { /test1.html, (null), (null) }
[Wed Mar 24 00:08:41 2004] [notice] (Type <=) = { cgi-script, /cgi-bin/test.cgi, (null) }
[Wed Mar 24 00:08:41 2004] [notice] Func executed for (null) [byAge(NULL)] (2 -> 2)
[Wed Mar 24 00:08:41 2004] [notice] New server list: [ 0 1 ]
[Wed Mar 24 00:08:41 2004] [notice] Func executed for (null) [byRandom(NULL)] (2 -> 2)
[Wed Mar 24 00:08:41 2004] [notice] New server list: [ 1 0 ]
[Wed Mar 24 00:08:41 2004] [notice] Func executed for (null) [byLogWindow(NULL)] (2 -> 1)
[Wed Mar 24 00:08:41 2004] [notice] New server list: [ 1 ]
[Wed Mar 24 00:08:41 2004] [notice] Func executed for (null) [byLoad(NULL)] (1 -> 1)
[Wed Mar 24 00:08:41 2004] [notice] New server list: [ 1 ]
[Wed Mar 24 00:08:41 2004] [notice] All funcs executed -> web.flight.co.jp
[Wed Mar 24 00:08:41 2004] [notice] (Type =>) = *{ backhand-redirection, backhand:/cgi-
bin/test.cgi, backhand/redirect }
[Wed Mar 24 00:08:41 2004] [notice] (Postread =>) = { Backhanding to 1 }
[Wed Mar 24 00:08:41 2004] [notice] (Postread =>) = { backhand:/cgi-bin/test.cgi, backhand-
redirection, (null) }
[Wed Mar 24 00:08:41 2004] [notice] (Translate <=) = { backhand:/cgi-bin/test.cgi, backhand-
redirection, (null) }
[Wed Mar 24 00:08:41 2004] [notice] (Type <=) = { backhand-redirection, /cgi-bin/test.cgi, (null) 
}
[Wed Mar 24 00:08:41 2004] [notice] (Type =>) = *{ backhand-redirection, /cgi-bin/test.cgi, 
(null) }
[Wed Mar 24 00:08:41 2004] [error] mod_backhand: Received fd(12).
[Wed Mar 24 00:08:41 2004] [error] mod_backhand: Check 1
[Wed Mar 24 00:08:41 2004] [error] mod_backhand: Check 2
[Wed Mar 24 00:08:41 2004] [error] mod_backhand: Check 3 --
---------------------------------------------------------------------------------------

I have two worrisome points.

One is error messages.
Another is the 'DECLINED' message.

When HTML contents come , mod_backhand seems to give up balancing.
And when cgi contents come , mod_backhand seems to try to do balancing.

The log which was recorded with only HTML contents is as follows.
---------------------------------------------------------------------------------------
[Wed Mar 24 00:11:29 2004] [notice] (Translate <=) = { /test1.html, (null), (null) }
[Wed Mar 24 00:11:29 2004] [notice] (Translate =>) = { /test1.html, (null), (null) }
[Wed Mar 24 00:11:29 2004] [notice] (Postread =>) = { DECLINED }
[Wed Mar 24 00:11:29 2004] [notice] (Translate <=) = { /test1.html, (null), (null) }
[Wed Mar 24 00:11:29 2004] [notice] (Translate =>) = { /test1.html, (null), (null) }
[Wed Mar 24 00:11:29 2004] [notice] (Translate <=) = { /test1.html, (null), (null) }
[Wed Mar 24 00:11:29 2004] [notice] (Translate =>) = { /test1.html, (null), (null) }
[Wed Mar 24 00:11:29 2004] [notice] (Postread =>) = { DECLINED }
[Wed Mar 24 00:11:29 2004] [notice] (Translate <=) = { /test1.html, (null), (null) }
[Wed Mar 24 00:11:29 2004] [notice] (Translate =>) = { /test1.html, (null), (null) }
[Wed Mar 24 00:11:29 2004] [notice] (Translate <=) = { /test1.html, (null), (null) }
[Wed Mar 24 00:11:29 2004] [notice] (Translate =>) = { /test1.html, (null), (null) }
---------------------------------------------------------------------------------------

Why mod_backhand gives up to do load balancing ?  We have given heavy 
enough load to one server.  

Directive is same about HTML and cgi.

## for HTML ##
<Directory />
    Options FollowSymLinks
    AllowOverride None
</Directory>
<Directory "/opt/FLIGHTweb/web_service/web_root/htdocs">
    Options Indexes FollowSymLinks MultiViews
    AllowOverride None
    Order allow,deny
    Allow from all
    Backhand byAge
    Backhand byLoad
    Backhand bySession FSESSIONID=
</Directory>

## for cgi ##
<IfModule mod_alias.c>
    Alias /icons/ "/opt/FLIGHTapps/httpd/icons/"
    <Directory "/opt/FLIGHTapps/httpd/icons">
        Options Indexes MultiViews
        AllowOverride None
        Order allow,deny
        Allow from all
    </Directory>
    ScriptAlias /cgi-bin/ "/opt/FLIGHTweb/web_service/web_root/cgi-bin/"
    <Directory "/opt/FLIGHTweb/web_service/web_root/cgi-bin">
        AllowOverride None
        Options None
        Order allow,deny
        Allow from all
        Backhand byAge
        Backhand byLoad
        Backhand bySession FSESSIONID=
    </Directory>
</IfModule>


Best Regards,
Keiichiro Katayama

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< FLIGHT SYSTEM CONSULTING Inc. >
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