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Removing Duplicates in a String List By 15 Seconds Discussion List Rating: 1.7 out of 5 Rate this article email this article to a colleague suggest an article Introduction This benchmark compares four different server-side methods (VBScript, JScript, Regular Expressions and the Dictionary Object) for taking a variable length, comma delimited string and converting it into a string with unique values. Basically, removing the duplicate items. Its pretty basic, but it does show VBScript's superior string handling capabilities (one of its very few benefits over JScript, see www.dagz.net/theone/). Also provided is a benchmark for comparing client-side VBScript and JavaScript. Average Test and Results (Server Side) Testing against: 1000 items Method String Time in ms JS Array: SomeClientName,Protocol,Newsgroups,Newsgroup,client 40 VBS Array: SomeClientName,Protocol,Newsgroups,Newsgroup,client 30 RegExp: SomeClientName,Protocol,Newsgroups,Newsgroup,client 100 Dict Object: SomeClientName,Protocol,Newsgroups,Newsgroup,client 40 Testing against: 5000 items Method String Time in ms JS Array: SomeClientName,Protocol,Newsgroups,Newsgroup,client 230 VBS Array: SomeClientName,Protocol,Newsgroups,Newsgroup,client 90 RegExp: SomeClientName,Protocol,Newsgroups,Newsgroup,client 351 Dict Object: SomeClientName,Protocol,Newsgroups,Newsgroup,client 170 Source Code Timer Machine specs: 333 MHz processor 327MB RAM W2K Server; (Build 2195) SP2 IIS 5.0 IE 5.0 Test and Results (Client Side) 1000, Highest and Lowest Scores not counted. Method Average 1 2 3 4 5 6 7 8 9 10 JavaScript 42 40 40 40 40 40 40 50 50 50 40 VBScript 27 (55%) 30 30 20 30 30 31 30 20 20 30 5000, Highest and Lowest Scores not counted. Method Average 1 2 3 4 5 6 7 8 9 10 JavaScript 199 190 200 200 190 201 201 200 200 200 201 VBScript 162 (22%) 151 140 161 160 170 170 150 181 170 170 10000, Highest and Lowest Scores not counted. Method Average 1 2 3 4 5 JavaScript 394 391 391 401 390 401 VBScript 367 (7%) 361 361 370 371 381 25000, Highest and Lowest Scores not counted. Method Once JavaScript 1002 (53%) VBScript 1532 Source Code Machine specs: AMD 1000mhz CPU 512 MB RAM W2K Pro; (build 2195) SP2 IE 5.5 Credits This has been made possible for you courtesy of: Robert Chartier (rob@aspfree.com) Helferty, Richard (Richardhelferty@FIRSTUSA.com) Michael J. Ryan (tracker1@theroughnecks.com) Philip Obbard (PObbard@slimfast.com) Rate This Article Not Helpful Most Helpful 1 2 3 4 5 Supporting Products/Tools XCache XCache combines dynamic content caching technology with content delivery network (CDN) support options, file compression and a whole lot of manageability features to help e-businesses deliver superior web site performance and reliability. You'll appreciate the administrative ease, your visitors will appreciate increased page delivery speed. [Top] XCompress XCompress works by compressing outgoing text between the Web server and the client. Page response times may improve by a factor of three or more while overall bandwidth use can drop by two thirds or more. XCompress runs on Windows 2000 and Windows NT 4.0 and is tightly integrated with Microsoft Internet Information Server (IIS) with MMC and COM interfaces. [Top] XTune XTune 2.0 is the most powerful tuning application for IIS 4 or IIS 5 ever conceived. Indispensable to the enterprise and straightforward, this web tuning tool allows you to configure hidden operating system, network, Active Server Pages and Internet Information Server settings for better performance, without any additional hardware or software. This version scans your system more deeply, offering more performance-enhancing recommendations and greater insight into your web architecture. The Performance Wizard guides and teaches you throughout the complete tuning process, so you can learn while making your box run better than ever. Purchase here. [Top] Other Articles Aug 25, 2005 - Performance Monitoring in SharePoint Portal Server 2003 Performance monitoring helps organizations identify performance bottlenecks. The problem is that with so many performance numbers available, how do you know which ones to watch? This article helps you identify which are the critical performance counters in a SharePoint Portal Server environment and explains how to monitor them. 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Has the online dating service's partnership with Microsoft been as successful as the relationships it has established for many of its millions of members? Read on ... [Read This Article]  [Top] Jan 15, 2004 - Database Performance Philosophy Longtime 15Seconds discussion list member Tore Bostrup offers valuable advice on designing databases and applications for efficient querying. [Read This Article]  [Top] Dec 29, 2003 - Caching Oracle Data for ASP.NET Applications Narayan Veeramani shows how ASP.NET developers can improve application performance by caching data stored in an Oracle database and keeping the cached data in sync with the data in the Oracle database. [Read This Article]  [Top] Dec 2, 2003 - Leveraging MSMQ in ASP.NET Applications Ever developed a Web application that requires extensive processing? Ever had long running Web pages that often time out in the browser? Greg Huber reveals a simple technique that uses Microsoft Message Queuing (MSMQ) and the System.Messaging framework to handle long running Web processes. [Read This Article]  [Top] Mar 14, 2002 - Web Site Compression As IT professionals try to reduce the cost of operating their Web sites, they should consider reducing the amount of bandwidth usage. Learn how to successfully compress your HTML output and save money on your monthly bandwidth. [Read This Article]  [Top] Feb 6, 2002 - The Just Two Theory on Web Servers Maintaining a large Web farm is both costly and unnecessary. Learn how to reduce your Web farm to just two servers in this controversial article by Wayne Berry. [Read This Article]  [Top] Aug 14, 2001 - NT Authentication's Impact on Connection Pooling Steve Witkop examines OLE DB and ODBC connection pooling when used with Microsoft NT LAN Manager Web server authentication. [Read This Article]  [Top] Mailing List Want to receive email when the next article is published? 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