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Webalizer Help Pages

"Webalizer" is offered as an analysis tool for site usage stats for most BCG Canada Inc. hosting accounts.

Server log files are common to all web hosting, that is almost every web host environment produces log files on the server for individual host accounts. What you do with these log files to interpret the data is up to the individual accounts. As a service we offer Webalizer, if you would like to have access to your "raw" log files and use a tool aother than Webalizer, please contact support services and arrangements can be made.

 
  What is The Webalizer?
The Webalizer is a web server log file analysis program which produces usage statistics in HTML format for viewing with a browser. The results are presented in both columnar and graphical format, which facilitates interpretation. Yearly, monthly, daily and hourly usage statistics are presented, along with the ability to display usage by site, URL, referrer, user agent (browser), search string, entry/exit page, username and country (some information is only available if supported and present in the log files being processed). Processed data may also be exported into most database and spreadsheet programs that support tab delimited data formats.

The Webalizer supports CLF (common log format) log files, as well as Combined log formats as defined by NCSA and others, and variations of these which it attempts to handle intelligently. In addition, wu-ftpd xferlog formatted logs and squid proxy logs are supported.

Gzip compressed logs may now be used as input directly. Any log filename that ends with a '.gz' extension will be assumed to be in gzip format and uncompressed on the fly as it is being read. In addition, the Webalizer also supports DNS lookup capabilities if enabled at compile time. See the file DNS.README for additional information.

Hits
Any request made to the server which is logged, is considered a 'hit'. The requests can be for anything... html pages, graphic images, audio files, CGI scripts, etc... Each valid line in the server log is counted as a hit. This number represents the total number of requests that were made to the server during the specified report period.

Files
Some requests made to the server, require that the server then send something back to the requesting client, such as a html page or graphic image. When this happens, it is considered a 'file' and the files total is incremented. The relationship between 'hits' and 'files' can be thought of as 'incoming requests' and 'outgoing responses'.

Pages
Pages are, well, pages! Generally, any HTML document, or anything that generates an HTML document, would be considered a page. This does not include the other stuff that goes into a document, such as graphic images, audio clips, etc... This number represents the number of 'pages' requested only, and does not include the other 'stuff' that is in the page. What actually constitutes a 'page' can vary from server to server. The default action is to treat anything with the extension '.htm', '.html' or '.cgi' as a page. A lot of sites will probably define other extensions, such as '.phtml', '.php3' and '.pl' as pages as well. Some people consider this number as the number of 'pure' hits... I'm not sure if I totally agree with that viewpoint. Some other programs (and people :) refer to this as 'Pageviews'.

Sites
Each request made to the server comes from a unique 'site', which can be referenced by a name or ultimately, an IP address. The 'sites' number shows how many unique IP addresses made requests to the server during the reporting time period. This DOES NOT mean the number of unique individual users (real people) that visited, which is impossible to determine using just logs and the HTTP protocol (however, this number might be about as close as you will get).

Visits
Whenever a request is made to the server from a given IP address (site), the amount of time since a previous request by the address is calculated (if any). If the time difference is greater than a pre-configured 'visit timeout' value (or has never made a request before), it is considered a 'new visit', and this total is incremented (both for the site, and the IP address). The default timeout value is 30 minutes (can be changed), so if a user visits your site at 1:00 in the afternoon, and then returns at 3:00, two visits would be registered. Note: in the 'Top Sites' table, the visits total should be discounted on 'Grouped' records, and thought of as the "Minimum number of visits" that came from that grouping instead. Note: Visits only occur on PageType requests, that is, for any request whose URL is one of the 'page' types defined with the PageType option. Due to the limitation of the HTTP protocol, log rotations and other factors, this number should not be taken as absolutely accurate, rather, it should be considered a pretty close "guess".

KBytes
The KBytes (kilobytes) value shows the amount of data, in KB, that was sent out by the server during the specified reporting period. This value is generated directly from the log file, so it is up to the web server to produce accurate numbers in the logs (some web servers do stupid things when it comes to reporting the number of bytes). In general, this should be a fairly accurate representation of the amount of outgoing traffic the server had, regardless of the web servers reporting quirks.

Note: A kilobyte is 1024 bytes, not 1000 :)

Top Entry and Exit Pages
The Top Entry and Exit tables give a rough estimate of what URL's are used to enter your site, and what the last pages viewed are. Because of limitations in the HTTP protocol, log rotations, etc... this number should be considered a good "rough guess" of the actual numbers, however will give a good indication of the overall trend in where users come into, and exit, your site.



More details will be posted here soon....
 
 

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