Robert,
>Date: Wed, 24 Sep 2003 20:48:03 -0600
>From: anne <anne@xxxxxxxxxxxxxxxx>
>Organization: UCAR/Unidata
>To: Robert Mullenax <rrm@xxxxxxxxxxxxxxxxxxxx>
>Subject: Re: FSL2 feed?
The above message contained the following:
> ... However, there's another issue wrt ".*" -
> contrary to what one might think, it has been found to be extremely
> inefficient and costly. So, from that perspective, I would advise
> using the expression above instead.
Just to clarify Anne's message, the regular-expression ".*", BY ITSELF,
is quite efficient. So a request-line like
request FSL2 .* host.domain
is quite all right. The problem occurs when ".*" is used as a PREFIX to
a more complex regular-expression. So a request-line like
request FSL2 ".*FSL\.NetCDF\.NOAAnet\.windprofiler\." host.domain
is SEVERAL HUNDRED TIMES LESS EFFICIENT than the request-line
request FSL2 "^FSL\.NetCDF\.NOAAnet\.windprofiler\." host.domain
Robert, just a thought, do you need to adjust the regular-expressions in
your pqact(1) configuration-file?
Regards,
Steve Emmerson
