Optimization

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2 total messages Started by Frank Gruber Wed, 22 Nov 2006 20:06

#1697

Author: Frank Gruber
Date: Wed, 22 Nov 2006 20:06

26 lines
1955 bytes

Hi.

Did not get a response in the language group so I will post the Indy 
sepcific parte here and hope to get an answer.

I'm trying to optimize performance of a x-tier app I have written. If I 
put the application server and presentation server on different machines 
latency of the application increases noticeably. I did not see this 
problem by moving the database server to a different machine.

What happens:

The presentation server is a TIdHttpServer decendant. If it receives a 
request from a browser it posts one or more xml encapsulated requests 
via TIdHTTP::Post to the application server. The application server 
sends back the xml encapsulated responses and the presentation server 
creates a HTML page out of it and sends it back to the client.

Any ideas why TIdHTTP::Post ist so much faster over a loopback 
connection than a LAN connection? I tested with 100-BaseT and 1000-BaseT 
which shows no difference at all (The amount of data transferred is 
quite small about 5k)

Thanks
Regards,
Frank

Re: Optimization

#1698

Author: Remy Lebeau (TeamB)
Date: Thu, 23 Nov 2006 08:51

11 lines
1129 bytes

"Frank Gruber" <ZJQBBYSESPEZ@spammotel.com> wrote in message
news:4564acdf$1@newsgroups.borland.com...

> Any ideas why TIdHTTP::Post ist so much faster over
> a loopback connection than a LAN connection?

Because the loopback connection is not going over the network at all.


Gambit

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