nixCraft

Hello all,

I need a suggestion for setup a server

I have a php page of 40KB, that has to provide 1 Lakhs users simultaneously.
That is a online exam page.

So my question is, what configuration of server should be ?
I have 2 choices either can go for IBM server or SUN server... which one is better

What should be Bandwith for this task.

If i am missing here some other considerations that i should take care of that, pl. let me..


Thanks
Regards

You need to be more descriptive in what exactly your setup is: i.e. your database server, number of queries per page etc... Also, it make more sense to have multiple server setup like one for DB, one for dynamic contents and the third for any static images, all connected internally through a second Gigabit NIC.

For 1 lacks user connection per sec you need cluster not a single IBM or Sun server will work. If I were you I will consider something as follows:

1) Load balancer in front of webserver nodes. It can be hardware based or software based using nginx or LVS or redhat cluster suite.

2) Dedicated database server with RAID-10 array with 8 or more disks.

3) Nodes - multiple nodes.

4) CDN if you use lots of JS, images etc.

As amitabh said provide more info.

__________________
Vivek Gite
Linux Evangelist
Be proud RHEL user, and let the world know about your enterprise choices! Join RedHat user group.
Always use CODE tags for posting system output and commands!
Do you run a Linux? Let's face it, you need help

Here are the details:

I have a website for registered users, This website is intended for Objective exams.
Now i want, let 1-1.5 Lakh users can login simultaneously and give exams, in sort, request to webserver will be about 2 Lakh per day.


I am going to use Mysql, but still hopping for good suggestion from ur side
OS would me CentOS


Now suggest me what sort of Hardware/Servers they needed and what should be bandwidth for all that.

That setup also require HA and Loadbalancing, firewall (All should be Hardware)

Since we not seen your source code and have no idea about code size. You need to perform a few test on your own. Usually, you need

1. Hardware or software based load balancer to spread load among the web server node.
2. Do not use Apache with PHP, it will kill performance. Use lighttpd or nginx with FastCGI. You need 3-4 web server nodes, each with 4-8GB RAM, RAID-1 SAS, Xeon CPU etc.
3. Get master / slave MySQL server setup with RAID10x15k SAS disks. Get lots of RAM 12-16GB. Cache mysql queries using memcached.
4. Install xcache on all php boxes.
5. Tune Linux TCP/IP stack.

Bandwidth usage depends upon various factors such as

1. Does web site uses lots of java script, images and css code?
2. Does web site uses flash?

__________________
Vivek Gite
Linux Evangelist
Be proud RHEL user, and let the world know about your enterprise choices! Join RedHat user group.
Always use CODE tags for posting system output and commands!
Do you run a Linux? Let's face it, you need help

hi

My site is gzipped, using memcache, using css, js, images

images comes from other server.

My question, how do i calculate the memory for Apache connections (for 1 lakh connection)

suppose my webpage without compression is 144 KB, and after gzipped, it goes 30KB.

Pl. tell me any formula to calculate the required RAM, CPU

Thanks in Adv.

Regards

There is not set formula to calculate the required RAM CPU etc. It is based on more on experience with handling server administration. What you can do though is use Apache Bench to simulate multiple connections to see how your server behaves under heavy load.