Re: Use of Filter rules for news, slow

On Tue, 24 Apr 2007, Ross wrote:

> On Mon, 23 Apr 2007, Lucio Chiappetti wrote:

[about a filter rule on "News: news.group.name" being much slower than a 
rule on "From: address" when filtering from a folder list of newsgroups]

> Did you try different "Current Folder Type" selections?
> 
> According to Pine Help: "When reading a newsgroup, there may be a performance
> penalty incurred when collecting the information necessary to check whether or
> not a Pattern matches a message. For this reason, the default Current Folder
> Type is set to "Email". If you have Patterns with a Current Folder Type of
> either "Any" or "News" and those Patterns are used for Index Line Coloring or
> Scoring, you may experience slower screen redrawing in the MESSAGE INDEX
> screen when in a newsgroup."

1) I am not talking of screen redrawing, but of the initial folder 
   (newsgroup) opening which is slow

2) My "Current Folder Type" is not set to "News" but to a specific
   Folder List = {newservername/nntp}#news.it.groupname

   It will make no sense to apply my rule to all e-mail or to all news,
   it has to be applied only to a couple of newsgroups !

3) the first rule I apply to the same newsgroup ("delete" messages
   from two particular users, i.e. implementing a kill file) is fast.
   It is only the rule which tests the Newsgroup header to contain
   a specific newsgroup (i.e. to "delete" messages addressed to 
   group A (in Folder List) and crossposted to group B (unwanted))
   which is slow.

4) I thought that defining a pattern of "News" (when the header field
   is called Newsgroups) might have some problems when fetching the
   messages. Maybe pine is trying to fetch all messages to compare,
   while it should fetch only those marked unread or not deleted in
   .newsrc for the specific newsgroup (A).
   I tried changing it to an "extra header pattern" Newsgroups, but
   still it is slow.

-- 
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Lucio Chiappetti - INAF/IASF - via Bassini 15 - I-20133 Milano (Italy)
For more info : http://www.iasf-milano.inaf.it/~lucio/personal.html
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