Items by Suzumura, Toyotaro
Number of items: 2. Suzumura, Toyotaro and Tatsubori, Michiaki and Trent, Scott and Tozawa, Akihiko and Onodera, Tamiya Highly Scalable Web Applications with Zero-Copy Data Transfer. The performance of server-side applications is becoming increasingly important as more applications exploit the Web application model. Extensive work has been done to improve the performance of individual software components such as Web servers and programming language runtimes. This paper describes a novel approach to boost Web application performance by improving inter-process communication between a programming language runtime and Web server runtime. The approach reduces redundant processing for memory copying and the context switch overhead between user space and kernel space by exploiting the zero-copy data transfer methodology, such as the sendfile system call. In order to transparently utilize this optimization feature with existing Web applications, we propose enhancements of the PHP runtime, FastCGI protocol, and Web server. Our proposed approach achieves a 126% performance improvement with microbenchmarks and a 44% performance improvement for a standard Web benchmark, SPECweb2005.
Tatsubori, Michiaki and Suzumura, Toyotaro HTML Templates that Fly: A Template Engine Approach to Automated Off-loading from Server to Client. Web applications often use HTML templates to separate the webpage presentation from its underlying business logic and objects. This is now the de facto standard programming model for Web application development. This paper proposes a novel implementation for existing server-side template engines, FlyingTemplate, for (a) reduced bandwidth consumption in Web application servers, and (b) off-loading HTML generation tasks to Web clients. Instead of producing a fully-generated HTML page, the proposed template engine produces a skeletal script which includes only the dynamic values of the template parameters and the bootstrap code that runs on a Web browser at the client side. It retrieves a client-side template engine and the payload templates separately. With the goals of efficiency, implementation transparency, security, and standards compliance in mind, we developed FlyingTemplate with two design principles: effective browser cache usage, and reasonable compromises which restrict the template usage patterns and relax the security policies slightly but in a controllable way. This approach allows typical template-based Web applications to run effectively with FlyingTemplate. As an experiment, we tested the SPECweb2005 banking application using FlyingTemplate without any other modiļ¬cations and saw throughput improvements from 1.6x to 2.0x in its best mode. In addition, FlyingTemplate can enforce compliance with a simple security policy, thus addressing the security problems of client-server partitioning in the Web environment.
This list was generated on Thu Jun 20 09:11:26 2013 BST.
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This website has been set up for WWW2009 by Christopher Gutteridge of the University of Southampton, using our EPrints software.
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Handy Tools
These are not directly related to the EPrints set up, but may be of use to delegates.
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