Server, webserver, php, mysql benchmarking -

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i've been working on enterprise application user base of 1000. there 20-30 users @ given time using tool , @ peak times around 100 users.

current configuration: lamp stack mysql 5.5.29, php 5.3.20 - codeigniter framework, front-end action script flex framework intel xeon 32 cores @ 2.9 ghz 161 gb of ram 2 tb hard drive linux fedora 16 os

i have received requirement granting access different departments add 5000 more users.

i've been front-end developer last 2 years doing back-end development well. however, not have enough experiencing in load balancing, hardware configuration can support etc.

currently, building application ground trying optimize areas bottlenecks , add features don't experience issues new additions.

first, there phpmyadmin type dashboards can installed on linux give me nice gui showing cpu load, memory usage, harddrive read/writes etc. ?

second, there suggestions people experience in area on can optimize server?

third, server configuration enough support many users? application using 75% select statements joins display reports , 25% of time writing/updating database.

thanks in advance help.


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