----- Original Message ----- From: "Steve Werby" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, March 07, 2002 3:09 PM Subject: Re: [cobalt-developers] Concurrent Users
> If I understand you right, you're asking if 200 people can be visiting the > website you describe at the same time. Absolutely. I expect you could > handle thousands of concurrent users, though it really depends on how much > CPU time each page requires to load, how long each user stays on the page > before visitng another on the server and what else is happening on the > server at the same time. I have built database-driven, content/data-heavy > sites for clients hosted on RaQ servers that have served up pages to several > thousand concurrent users. For argument's sake, let's say that the average > user spends 20 seconds on a pertinent content-heavy page and 3 seconds on a > non-pertinent content-light page. Since the average HTML page takes a small > fraction of a second of CPU time and the average PHP time takes a small (but > relatively larger) fraction of a second of CPU time, assuming page requests > are somewhat normally distributed you'd be able to accomodate "concurrent > users" to an order of several magnitudes greater than "concurrent processes" > which is probably the true bottleneck in your scenario. You served websites to several thousand concurrent users ? Are you sure? On ONE machine? I think that can't be true. The max. concurrent user value apache could handle without a recompile is 512 if i remember right. Even WITH a recompile putting the value over 1024 is REALLY hard for most webservers and so for a standard RAQ4. Not only CPU time is a point but also there are the Processlist, MEM usage, I/O ... and so on. Serving serveral thousand user ... even several HUNDRED users on one machine is a dream wich cant be realised with a RAQ4. Building high traffic webservers is no fun and you wont get one by putting a RAQ out of the box. Pure system tweaking! Just my 2 cents... Ciao... Chris _______________________________________________ cobalt-developers mailing list [EMAIL PROTECTED] http://list.cobalt.com/mailman/listinfo/cobalt-developers
