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Blogbench 1.0

  Date Added: March 24, 2010  |  Visits: 646

Blogbench

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Blogbench is a portable filesystem benchmark that tries to reproduce the load of a real-world busy file server. It stresses the filesystem with multiple threads performing random reads, writes and rewrites in order to get a realistic idea of the scalability and the concurrency a system can handle. Blogbench was initially designed to mimic the behavior of the Skyblog.com blog service. 4 different types of threads are started: - The writers. They create new blogs (directories) with a random amount of fake articles and fake pictures. - The rewriters. They add or they modify articles and pictures of existing blogs. - The "commenters". They add fake comments to existing blogs in random order. - The readers. They read articles, pictures and comments of random blogs. They sometimes even try to access non-existent files. New files are written atomically. The content is pushed with 8 Kb chunks in a temporary file that gets renamed if everything completes. 8 Kb is the default PHP buffer size for writes. Reads are performed with a 64 Kb buffer. Concurrent writers and rewriters can quickly create fragmentation if the preallocation is not optimal. But it is very interesting to check how different filesystems reacts to fragmentation. Every blog is a new directory withing the same parent directory. Since some filesystems are unable to manage more than 32k or 64k links to the same directory (an example is UFS), you should not force the test to run a silly amount of time on these filesystems..

Requirements: No special requirements
Platforms: Linux
Keyword: Benchmarks Blogbench Blogs Filesystem Portable Random System
Users rating: 0/10

License: Freeware Size: 122.88 KB
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