quick connection then wait but for what?

[beooi alex <beooia@xxxxxxxx>]

hello,
 
first of all excuse me for my poor english :)
 
this is our lvs cluster:
 
                             director
                                  |
                              switch
                                  |
            ----------------------------------------------
           |                                              |
web/mailserver                          webmailserver
           |                                              |
            ----------------------------------------------
                                  |
                              switch
                                  |
            ----------------------------------------------
           |                                              |
     fileserver                              databaseserver
 
we have a strange problem:
we don't use nor identd nor hostnamelookup but we have those symptoms...
 
when you request a page, the result is the same with a 1ko page or a 10 mo one,
you see connection, opening, then you wait between 1 and 3 seconds,
then everything appear very fast
 
we didn't have this problem before we "clustered" our installation.
we add a smart array 641 controller with 4 discs (raid10) for the fileserver.
 
we don't understand how this cluster can respond slower than before.
 
can the problem be the director (a pc 550mhz-128mo)?
can it be the default stripe size of the file server (128 ko for raid10)?
...?
 
thanks a lot in advance for your responses/help. :)
 
alex.

                
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