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Web Content Adaptation to Improve Server Overload BehaviorWEB-. Techniques. , vol. 3, no. 5, pp. 45{52, May 1998. 8] R. T. Fielding and G. Kaiser, The apache http server project,". IEEE-Internet-Computing
Web Content Adaptation to Improve Server Overload Behavior Tarek F. Abdelzaher Nina Bhatti Real-Time Computing Laboratory Hewlett Packard Laboratories EECS Department, Univeity of Michigan 1501 Page Mill Road Ann Arbor, Michigan 48109{2122 Palo Alto, CA 94304 zaher@eecs.umich.edu nina@hpl.hp.com Abstract This paper presents a study of web content adaptation to improve server overload perfor- mance, as well as an implementation of a web content adaptation software prototype. When the request rate on a web server increases beyond server capacity, the server becomes over- loaded and unrespoive. The TCP listen queue of the servers socket overows exhibiting a drop-tail behavior. As a result, clients experience service outages. Since clients typically issue multiple requests over the duration of a session with the server, and since requests are dropped indiscriminately, all clients connecting to the server at overload are likely to experi- ence connection failures, even though there may be enough capacity on the server to deliver all respoes properly for a subset of clients. In this paper, we propose to resolve the overload problem by adapting
DownloadWebmonkey programming: PHP/MySQL TutorialWelcome to the third and final lesson for this tutorial. If you've gone through Lesson 1 and Lesson 2, you already know the essentials for installing and writing useful scripts with MySQL and PHP. We're going to look at some useful PHP functions that should make your life a lot easier. First, let's look at include files.
We all know the basics of includes, right? Contents of an external file are referenced and imported into the main file. It's pretty easy: You call a file and it's included. When we do this in PHP there are two functions we need to talk about: include() and require(). The difference between these two functions is subtle but important, so let's take a closer look. The require() function works in a XSSI-like way; files are included as part of the original document as soon as that file is parsed, regardless of its location in the script. So if you decide to place a require() function inside a conditional loop, the external file will be included even if that part of the conditional loop is false.
The include() function imports the referenced file each time it is encountered. If it's not encountered, PHP won't bother with it.
This means that you can use include in loops and conditional statements, and they'll work exactly as planned.
Finally, if you use require() and the file you're including does not exist, your script will halt and produce an error. If you use include() , your script will generate a warning, butMicroTrack 24/96 Professional 2-Channel Mobile Digital Recorder User GuideThe MicroTrack 24/96 is a portable recorder that can record stereo audio signals directly to CompactFlash media in either WAV or MP3 format. The MicroTrack 24/96 can be connected to a computer via the USB connection to transfer audio files. The USB port is also used to recharge the internal battery of the MicroTrack 24/96. Typically, a computer’s USB port will supply enough power to recharge the MicroTrack 24/96’s battery, though a USB power supply is also provided for charging without a computer.
The MicroTrack 24/96 has an 1/8” microphone port which supplies 5V for electret microphones like the included stereo “T” microphone. Two 1/4” TRS inputs accommodate mic or line level inputs, and can supply phantom power for condenser microphones. A coaxial SPDIF input is available for recording from a digital source; the MicroTrack 24/96 automatically sets the sample rate to match the incoming stream. An 1/8” headphone port and RCA line outs can be used for monitoring recordings and playback. While the MicroTrack 24/96 is simple to use, we still suggest that you read through this entire manual to familiarize yourself with all the functions contained within this portable unit.
Download pdf MicroTrack 24/96 Professional 2-Channel Mobile Digital Recorder User GuideEbay File Exchange Basic Template InstructionsThis guide explains how to use the eBay File Exchange listing tool to post product listings to the eBay web site. This guide was designed to be used with one of the standard templates available on the File Exchange Select Template web page.
What is File Exchange?
This section provides a general overview of File Exchange, and then explains template structure and use.
eBay File Exchange overview
This section explains the requirements and qualification necessary to use the File Exchange templates, and then presents a general workflow.
File Exchange requirements and qualifications
File Exchange allows you to create listings offline using a standard flat-file format, and then easily bulk upload and manage a large number of listings and the resulting sales reports.
The File Exchange tool helps you quickly and efficiently:
• Create new listings
• Confirm there are no errors in your listing files before posting them
• Revise active listings
• End active listings
• Download sales reports
• Issue refunds
• Mark items as shipped
• Leave feedback.
File Exchange is the ideal tool if you:
• Are already familiar with the eBay listing process
• Have a lot of inventory items you want to list on eBay
• Use software, such as Microsoft® Excel, Access or another program to manage your inventory and you want to use it to create a listing file for eBay
• Are familiar with flat files and want to batch list several items in a single file.
Using File Exchange involves meeting certain eBay account qualifications and computer system requirements.
Qualifications
To use File Exchange, you must:
• Be registered on eBay for at leastUsage of LDAP in Globus pdfThis short note describes the use of LDAP in the Globus metacomputing toolkit. It answers three questions: What is LDAP? Where is it used? and Why is it used in the Globus metacomputing toolkit?
• Contents
• 1. Short Introduction to Directory Services and LDAP
• 2. Directory Service for a Metacomputing Infrastructure
• 2.1 Initialization
• 2.2 Population
• 2.3 Querying
• 2.4 Application Interfaces
• 3. Globus Components
Download Usage of LDAP in Globus pdfCyber Insecurity ReportNo software is perfect. This much is known from academia and every-day experience. Yet our industry knows how to design and deploy software so as to minimize security risks. However, when other goals are deemed more important than security, the consequences can be dangerous for software users and society at large.
Microsoft’s efforts to design its software in evermore complex ways so as to illegally shut out efforts by others to interoperate or compete with their products has succeeded. The monopoly product we all now rely on is thus both used by nearly everyone and riddled with flaws. A special burden rests upon Microsoft because of this ubiquity of its product, and we all need to be aware of the dangers that result from reliance upon such a widely used and essential product.
CCIA warned of the security dangers posed by software monopolies during the US antitrust proceeding against Microsoft in the mid and late 1990’s. We later urged the European Union to take measures to avoid a software “monoculture” that each day becomes more susceptible to computer viruses, Trojan Horses and other digital pathogens.
Download pdf Cyber Insecurity ReportopenSUSE 10.2 Reference ManualThis manual gives you a general understanding of openSUSE™. It is intended mainly for system administrators and home users with basic system administration knowledge. This manual presents a selection of applications needed in everyday life and provides in-depth descriptions of advanced installation and configuration scenarios. Advanced Deployment Scenarios Learn how to deploy openSUSE from a remote location and become acquainted with complex disk setup scenarios...
Download openSUSE 10.2 Reference ManualFoxit PDF IFilter 1.0 for Microsoft SQL Server 2005 User ManualFoxit PDF IFilter is an application designed to help users index a large amount of PDF documents and then quickly find text within these documents. The PDF documents can not only be files, but also email attachments or database records. Foxit PDF IFilter supports PDF 1.7 specification and can be used in many Microsoft search engines, such as Windows Indexing Service, MSN Desktop Search, Internet Information Server, SharePoint Portal Server, Windows SharePoint Services (WSS), Site Server, Exchange Server, SQL Server and all other products based on Microsoft Search technology. With Foxit PDF IFilter, all these search engines can find PDF files with ease.
Why PDF IFilter?
PDF IFilter is necessary for several reasons listed below:
- Microsoft creates and maintains office file formats, such as .doc, .xls, .ppt, etc. However, many other file formats are created and maintained by other companies. For example, PDF was created by Adobe.
- With the advantages of security, reliability and accessibility, PDF is now being used by more and more people all over the world.
- PDF IFilter is a plug-in that allows Microsoft search engines to index PDF files so that they become searchable. Without an appropriate PDF IFilter, contents of a PDF file cannot be indexed.
Foxit PDF IFilter is favored by a large number of government organizations and well-known companies because of the following reasons:
- Foxit PDF IFilter helps to do a two-stage search – Index and Search, which makes finding information much easier.
- Foxit PDF IFilter supports multi-threading and makes full use of multi-CPU/core in aMeeting Manager 1.2 Help GuideThis document is a guide to support WWRE® Meeting Manager. It is intended to check common issues that may prevent a user from accessing Meeting Manager. This document also describes how to capture useful information to help WWRE Support diagnose and resolve issues. If you need additional assistance, the WWRE Help Desk is available 24/7 to document an issue and provide assistance. For phone numbers, visit the WWRE website at www.wwre.org.
Meeting Manager supports a variety of platforms, operating systems, and browsers. Meeting Manager supports various Windows and Macintosh operating systems. It also supports many permutations of browser versions within those operating systems. The table on the following page shows which operating systems and browser versions Meeting Manager supports. If you do not know your machine’s configuration, refer to this guide’s remaining sections for instructions on how to check your configuration.
Macintosh users should note that Meeting Manager supports Macintosh users to view meetings and control applications shared by Windows users. Beyond that core functionality, there are several known limitations. The limitations are described in the table on the following page. This document does not provide information on how to check Macintosh configurations. Please refer to Macintosh help for information.
Download pdf Meeting Manager 1.2 Help GuideTrumpCard Installation Guide Manual for Macintosh PowerBooksThe Four of Diamonds is an Ethernet LAN PC Card. The MacJack of Diamonds is an Ethernet LAN and 33.6Kbps Data+Fax Modem PC Card. Both TRUMPCARDs conform to Type II PC Card standards. About this Manual This guide provides installation instructions for the Four of Diamonds and MacJack of Diamonds. The Installation Guide for Macintosh PowerBooks explains how to install the necessary software, enable an Ethernet network connection and a TRUMPCARD modem.
The following icons denote which sections of this manual are relevant to which TRUMPCARD: MacJack of Diamonds Four of Diamonds Notes: This manual is intended as a supplement to the Modem User s Guide. For modem commands, refer to the Modem User s Guide. Please refer to the Read Me First file on the Macintosh Drivers and Utilities disk for any release notices and post-press changes to this manual.
Download pdf TrumpCard Installation Guide for Macintosh PowerBooks
