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6. Performance Analysis > Log File Analysis

Log File Analysis

In a sense, all web servers come with a performance monitoring tool, the logging facility of the server. This leaves the webmaster the problem of interpreting the logged data. The one-line-per-transfer format is difficult to analyze by directly reading it.

The need to extract as much useful information as possible from log files has given rise to a small industry of log parsing and graphing packages like Interse, the freeware analog tool net.Analysis (http://www.netgen.com/), and the Netscape servers’ built-in analyze command. These tools are useful, but you can also simply import log files into a spreadsheet program and use the spreadsheet to plot the results in various ways. A good spreadsheet program will have graphing ability similar to dedicated log graphing packages, and the added advantage is that you may already own one.


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