Performance of fastcgi on AIX

Shaun Coughlin <[email protected]>
Newsgroups gmane.comp.web.fastcgi.devel
Message-ID <[email protected]>
Hello

I have recently ported my fastcgi application to AIX 4.2

Everything compiled OK and the applications run. However, when I connect 
over the LAN to the AIX machine with a request the performance is 
terrible. The machine itself is fine. It is a production machine with 40 
users and performance is excellent. Apache responds well but the fastcgi 
requests from  the client take  a very long time , seconds for each one. 
The same application running on linux is near instantaneous.

The system is multi-tier. Client connects to (linux server running 
apache and PHP). PHP makes fastcgi requests to AIX machine to retrieve 
data from the database and pass back. Typical size of request data block 
is 100-800 bytes and similar for response. A typical page load will make 
60-70 requests for data. With a linux database server this is done sub 
second. With AIX database server this takes 15 seconds!! The LAN is 
100MB/s. I suspect it has to be something to do with the socket 
connection between the PHP server and the AIX server.

Any help would be greatly appreciated.

Shaun Coughlin

Tel: 01827 304100
Fax: 01827 310526

www.traderman.co.uk

Intelligent Software for Transport and Warehousing 


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