[rt-users] RT response time

[Matthew Seaman]

Raed El-Hames wrote:

> Versions 3.6.4 and 3.8.5
> apache2,mod_perl2 and mysql5
> 
> Have anyone done any kind of monitoring / profiling of RT response time, 
> ie measure the time it takes to display a ticket / (or create a ticket 
> but possibly doing this every 5/10 minutes wont be desirable)
> Can anyone recommend any software (preferably open source) that can do 
> that?

If you modify the apache log format, you can get it to include the amount
of time it spends to serve each page.  Something like this:

 LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %D"

(See http://httpd.apache.org/docs/2.2/mod/mod_log_config.html)

%D is the time in microseconds it takes to serve the request.  There's also
%T, but that's measured in integer numbers of seconds, so it's almost always
0 for any reasonably good web-server.  %D is to some extent determined by
how fast the web clients can receive the data, but this should not be rate 
limiting unless you have particularly old and slow client machines or people 
accessing the site through dial-up connections.

AFAIK most weblog analysis software doesn't deal with the time taken to serve
a request, because that data isn't included in the standard log file formats.
However, writing a small perl script to calculate statistics for each of the 
different queries (%r in the format) should be fairly trivial to do.

	Cheers,

	Matthew

-- 
Dr Matthew Seaman                     The Bunker, Ash Radar Station
PGP: 0x60AE908C on servers            Marshborough Rd
Tel: +44 1304 814890                  Sandwich
Fax: +44 1304 814899                  Kent, CT13 0PL, UK

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