proper concurrent users estimation case studies

Posted by golemwashere on Server Fault See other posts from Server Fault or by golemwashere
Published on 2010-05-01T14:08:48Z Indexed on 2010/05/01 14:18 UTC
Read the original article Hit count: 455

Filed under:

concurrency

|

stats

|

case-studies

|

web

I've been asked to size a web architecture for an excessive number of concurrent users ( hundreds of thousands ).

I'm having a hard time convincing these people that unless you are in the top 5 of your country websites it's quite hard to hit those numbers.

Can anyone provide some real world case studies providing stats for total / concurrent users explaining what is the usual ratio between total vs concurrent?

© Server Fault or respective owner

Related posts about concurrency

SQL SERVER – Concurrency Basics – Guest Post by Vinod Kumar

as seen on SQL Authority - Search for 'SQL Authority'
This guest post is by Vinod Kumar. Vinod Kumar has worked with SQL Server extensively since joining the industry over a decade ago. Working on various versions from SQL Server 7.0, Oracle 7.3 and other database technologies – he now works with the Microsoft Technology Center (MTC) as a Technology… >>> More
Http requests / concurrency?

as seen on Stack Overflow - Search for 'Stack Overflow'
Say a website on my localhost takes about 3 seconds to do each request. This is fine, and as expected (as it is doing some fancy networking behind the scenes). However, if i open the same url in tabs (in firefox), then reload them all at the same time, it appears to load each page sequentially rather… >>> More
Mnesia: A Distributed DBMS Rooted in Concurrency

as seen on Internet.com - Search for 'Internet.com'
Find out what makes Mnesia, the Erlang-based database management system, perfect for distribution across a network of computers. >>> More
C# concurrency vs Java concurrency, which is neatly designed? which is better?

as seen on Stack Overflow - Search for 'Stack Overflow'
I am hard core fan for Doug Lee and his concurrency framework. I have also (from twitter) came across a comment from Joshua Bloch that java concurrency is one of the best framework (guess that he compared to .Net). But some of you worked in both Java Concurrency and .NET concurrency. What is your… >>> More
Queued Loadtest to remove Concurrency issues using Shared Data Service in OpenScript

as seen on Oracle Blogs - Search for 'Oracle Blogs'
Queued Processing to remove Concurrency issues in Loadtest ScriptsSome scripts act on information returned by the server, e.g. act on first item in the returned list of pending tasks/actions. This may lead to concurrency issues if the virtual users simulated in a load test scenario are not synchronized… >>> More

Related posts about stats

google analytics - real-time user stats vs audience overview user stats

as seen on Pro Webmasters - Search for 'Pro Webmasters'
When looking at the real-time analytics reporting for our app, it shows around 150-180 users, say around 10AM (our peak usage time). When I look at the Audience Overview report for the same day (hourly breakdown), the number of users shown for the 10AM hour is over 1000. I'm sure this has to do with… >>> More
SQL SERVER – Introduction to Wait Stats and Wait Types – Wait Type – Day 1 of 28

as seen on SQL Authority - Search for 'SQL Authority'
I have been working a lot on Wait Stats and Wait Types recently. Last Year, I requested blog readers to send me their respective server’s wait stats. I appreciate their kind response as I have received Wait stats from my readers. I took each of the results and carefully analyzed them. I provided… >>> More
Examples of interesting implementations of character stats?

as seen on Game Development - Search for 'Game Development'
I've got this BBG going ( http://ninjawars.net ), and the character stats currently are simplistic. I'm looking to add a few stats to the current 1/2 (strength and maximum hitpoints, essentially). I've come up with: (strength (unchanged), speed, stamina, and some others that are somewhat interesting… >>> More
Using BPEL Performance Statistics to Diagnose Performance Bottlenecks

as seen on Oracle Blogs - Search for 'Oracle Blogs'
Tuning performance of Oracle SOA 11G applications could be challenging. Because SOA is a platform for you to build composite applications that connect many applications and "services", when the overall performance is slow, the bottlenecks could be anywhere in the system: the applications/services… >>> More
SQL SERVER – 2011 – Wait Type – Day 25 of 28

as seen on SQL Authority - Search for 'SQL Authority'
Since the beginning of the series, I have been getting the following question again and again: “What are the changes in SQL Server 2011 – Denali with respect to Wait Types?” SQL Server 2011 – Denali is yet to be released, and making statements on the subject will be inappropriate… >>> More