Great Circle Associates Majordomo-Workers
(August 1996)
 

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Subject: Re: New! - Fast delivery for large lists
From: Software Development <junkyard @ primate . wisc . edu>
Date: Thu, 8 Aug 1996 15:22:04 -0500 (CDT)
To: pdc @ virtualvin . com (Paul Close)
Cc: stas @ isf . ru, majordomo-workers @ GreatCircle . COM
In-reply-to: <199608081752.KAA10836@magnum.virtualvin.com> from "Paul Close" at Aug 8, 96 10:52:23 am

> > Splitlist opens a SMTP connection with localhost, and for each N (N=10) 
> > users sends a separate message. So, sendmail gets several litle jobs, 
> > N users each. Sure, then it forks so much as it needs to process these
> > queues 
> > parallelly. But don't be much afraid, it won't break your machine down:
> > my 486dx/33 with 16mb memory sends 350-users list in 25 minutes.
> 
> This is very interesting -- perhaps you could post it here (if it's not too
> large!).
> 
> A few observations:
> 
>     - I hope N is settable, as many people have lists 10x your 350 list.
>       35 sendmail processes isn't that scary, but 350 is!
> 
>     - You should really sort your mailing list by host.  Otherwise sendmail
>       can't collapse hosts as well as it would like.
> 
>     - Along those lines, you should not use 'N' arbitrarily -- it's always
>       better to batch all mail for one domain into a single batch no matter
>       how large, since you are typically talking to only one host.  Just
>       batch up what's left....

At which point it'll be doing what bulk_mailer already does...

Paul DuBois
dubois@primate.wisc.edu


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