Subject: Re: architecting large sites From: Vic C <[EMAIL PROTECTED]> === Oh and a ... sticky IP on CISCO
Vic C wrote: > I have done stress testing to 1000 users with a 2 cpu box quite nicely. > So 2 boxes (each with 2 CPUs) and 1.5 gig ram at least would be a start. > > Also... JRockit VM and Tower J VM and IBM VM (in that order) should be > used instead of the SUN VM. > I assUme that you will stress test (I use MS stress test tool with 5 PCs > w/ 512 meg each), so you can see which VM works for you and what tweaks > to VM you need. GC could slow you down. > > V. > > J Doe wrote: > >> Hello, >> >> I'm looking for pointers to docs/books on how to scale >> Tomcat. For simplicity, let's assume that there is a >> single webapp that is basically on the order of a >> Cocoon/Jetspeed application, with no DB connections >> per se, but pulling information from some other web >> sources (e.g. syndication). >> >> Suppose that a site needs to support 1500+ >> simultaneous users. (Quite large, yes). >> >> I'm no expert in web-site architecture, but it strikes >> me that there are 2 or 3 possibilities to this >> problem: (a) multiple machines, using a load-balancer, >> (b) multiple instances of Apache/Tomcat on a given >> machine(s), and (c) beefing up each machine with max >> memory and possibly more CPUs. >> >> Is there a ballpark estimate for the max number of >> simultaneous users for a single machine with >> Apache/Tomcat? I'm guessing this will be far less >> than 1500. Given that, what's the "next-best" way to >> boost that number? Would having multiple CPUs be >> effective? Can there actually be multiple instances >> of Tomcat on a single machine? If so, does that help >> address this issue? >> >> I realize these questions are vague and deal with a >> huge scope, but I'm looking for doc sources or "best >> practices", rather than concrete answers. >> >> thanks, >> Mike >> >> ps. Does anyone know of some "large" sites that use >> Apache/Tomcat? I'm trying to get a sense if 1500+ is >> even possible, or if it has been attempted. >> __________________________________________________ >> Do You Yahoo!? >> Yahoo! Health - Feel better, live better >> http://health.yahoo.com >> >> -- >> To unsubscribe, e-mail: >> <mailto:[EMAIL PROTECTED]> >> For additional commands, e-mail: >> <mailto:[EMAIL PROTECTED]> >> > -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
