asp.net - Best way to determine the number of servers needed -

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how traffic can 1 web server handle? what's best way see if we're beyond that?

i have asp.net application has couple hundred users. aspects of processor intensive, far have done fine 1 server run both sqlserver , site. it's running windows server 2003, 3.4 ghz 3.5 gb of ram.

but lately i've started notice slows @ various times, , wondering what's best way determine if server overloaded usage of application or if need fix application (i don't want spend lot of time hunting down little optimizations if i'm expecting box).

what need info on capacity planning..

capacity planning process of planning growth , forecasting peak usage periods in order meet system , application capacity requirements. involves extensive performance testing establish application's resource utilization , transaction throughput under load. first, measure number of visitors site receives , how demand each user places on server, , calculate computing resources (cpu, ram, disk space, , network bandwidth) necessary support current , future usage levels.


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