Datasheet

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Another option called redirect_children conﬁgures the number of

“redirect” (in this case squidGuard) processes running on the machine.

squidGuard is fast enough to handle many requests: on a 500 MHz Pen-

tium with 5,900 domains and 7,880 URLs (totalling 13,780), 100,000 re-

quests can be processed within 10 seconds. Therefore, it is not recom-

mended to set more than four processes, as the allocation of these processes

would consume an excessive amount of memory

redirect_children 4

Last, have Squid load the new conﬁguration by running rcsquid reload.

Now, test your settings with a browser.

25.3.9 Cache Report Generation with Calamaris

Calamaris is a Perl script used to generate reports of cache activity in ASCII

or HTML format. It works with native Squid access log ﬁles. The Calamaris

home page is located at http://Calamaris.Cord.de/. The program is

quite easy to use.

hoptionsi > reportfile. It is important when piping more than one

log ﬁle that the log ﬁles are chronologically ordered with older ﬁles ﬁrst.

These are some options of the program:

-a output all available reports

-w output as HTML report

-l include a message or logo in report header

More information about the various options can be found in the program’s

manual page with man calamaris.

A typical example is:

cat access.log.2 access.log.1 access.log | calamaris -a -w \

> /usr/local/httpd/htdocs/Squid/squidreport.html

This puts the report in the directory of the web server. Apache is required

to view the reports.

Another powerful cache report generator tool is SARG (Squid Analysis

Report Generator). More information about this is available at: http://

web.onda.com.br/orso/.

616 25.3. Proxy Server: Squid