Re: Any way to mitigate slowdown caused by scoring on article headers?

* Grant Edwards is quoted & my replies are inline below :
> On 2008-05-09, Troy Piggins <[email protected]> wrote:
> > * Grant Edwards is quoted & my replies are inline below :
> 
> >> I recently started scoring articles on header fields other
> >> than subject, and it's causing about a 100X slowdown when I
> >> enter a group.  Previously (scoring only on subject headers),
> >> a single XOVER command grabbed all of the info needed. Now
> >> slrn sends commands to fetch headers for each article.  I
> >> don't suppose there's anything I can do to mitigate the
> >> problem? (Without letting in the flood of spam from google
> >> groups.)
> >
> > What header are you scoring on?
> 
> Organization:

Try getting rid of the Organization: score.  It's not an XOVER
header.

If you limit scoring rules to just these headers it will be
/much/ faster:

Subject
From
Date
Message-ID
References
Bytes
Lines
Xref:full

> Message-ID:
> Subject:
> 
> > How many messages in the group?
> 
> Somewere between 0 and 200.
> 
> If I score on Subject: alone, slrn retrives headers for about
> 100-200 articles per second using the XOVER command to grab a
> bunch of them in one transaction.  If I score on Organization:
> and Message-ID:, slrn sends an individual command to fetch each
> header for each article, and that probably runs at 2-5 articles
> per second.  After doing some more informal timing, the
> slowdown is probably closer to 50X than 100X.

Message-ID should be fine.  It's Organization causing the problem
IMO.

-- 
Troy Piggins | http://piggo.com/~troy/slrn                    ___  |   __   __
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