Re: External delivery: Pros and cons

[nobody@nowhere.invalid (Unknown)]

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X-Organization: University of Massachusetts, Amherst, MA 01003
X-Time: Fri Nov 17 04:40:49 1995
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References: <199511151538.HAA00082@edmonds.home.cs.ubc.ca>
From: Manoj Srivastava <srivasta@pilgrim.umass.edu>
Date: 17 Nov 1995 04:40:48 -0500
In-Reply-To: Brian Edmonds's message of Wed, 15 Nov 1995 07:38:25 -0800
Message-ID: <gvxbuqbh93z.fsf@plymouth.pilgrim.umass.edu>
Organization: Project Pilgrim, University of Massachusetts at Amherst
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Hi,

>>"Brian" == Brian Edmonds <edmonds@cs.ubc.ca> writes:

 Date> 15 Nov 1995 03:01:39 -0500
 >>
 Cons>

 Brian> One con you forgot that used to bother me a lot: when you
 Brian> filter incoming messages, you end up with one (potentially
 Brian> large: perl) process per message.  If you're on a system like
 Brian> mine where I retrieve mail via UUCP once per hour, all those
 Brian> processes starting up at once can put a serious strain on the
 Brian> system.  I have blown out my virtual space once in the past
 Brian> when I was only running with 20M.

	If you use mailagent as your external splitting agent, then
 the filtering is two phased, each mail message invokes a small filter
 written in C, that spools the files locally, and calls the
 (potentially large) perl mailagent just once for a batch of files.  I
 think it would solve your problem with batch downloads (works great
 for me on a linux box).

 Brian> I find splitting the mail inside emacs is pretty quick, unless
 Brian> you've got hundreds of messages, and far kinder on my hard
 Brian> drive and system performance.  As it is, just punting
 Brian> everything through sendmail at once produces a noticable lag.

	Well, I need mailagent for other things, and did not feel like
 maintaining two sets of filtering rules. 

 Brian> Brian.  http://www.cs.ubc.ca/spider/edmonds

	manoj

-- Burnt Sienna. That's the best thing that ever happened to
 Crayolas. Ken Weaver

Manoj Srivastava         Project Pilgrim, Department of Computer Science 
Phone: (413) 545-3918             A143B Lederle Graduate Research Center
Fax: (413) 545-1249       University of Massachusetts, Amherst, MA 01003     
email:srivasta@pilgrim.umass.edu http://www.pilgrim.umass.edu/~srivasta/