Very slow propagation of mailing list?

Very slow propagation of mailing list?

[Chris Faylor]

I've noticed that it sometimes takes more than 24 hours for my email
to the mailing list to show up on the mailing list.  Looking at the
submission times of all of the articles today it appears that I am not
alone.

I've also noticed that I get personal responses to email about 24 hours
after I've sent something.

So the question is: Is there a reason why the gnu-win32 list is so slow?
Is the Cygnus machine *incredibly* bogged down or is there some other
bottleneck somewhere?  I don't notice this kind of delay in any of the
other mailing lists to which I subscribe.
-- 
http://www.bbc.com/	cgf@bbc.com			"Strange how unreal
VMS=>UNIX Solutions	Boston Business Computing	 the real can be."
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Re: Very slow propagation of mailing list?

[$Bill Luebkert]

Chris Faylor wrote:
> 
> I've noticed that it sometimes takes more than 24 hours for my email
> to the mailing list to show up on the mailing list.  Looking at the
> submission times of all of the articles today it appears that I am not
> alone.
> 
> I've also noticed that I get personal responses to email about 24 hours
> after I've sent something.
> 
> So the question is: Is there a reason why the gnu-win32 list is so slow?
> Is the Cygnus machine *incredibly* bogged down or is there some other
> bottleneck somewhere?  I don't notice this kind of delay in any of the
> other mailing lists to which I subscribe.

How big is this list?

I also noticed a 20 hour delay in getting messages on the win32 Perl
list.  I computed that if it takes 1 second to send a message to each
user (kinda slow, but just as an example) and there are over 1000
people on the list, then it would take 1000 seconds per email to 
relay it to the list.  20 hours is 72000 seconds / 1000 seconds per 
message = 72 messages per 20 hour period max.

All of that is based on a 1 second relay time.  Some will be more,
large postings of binaries, etc.  Most should be less.  A Unix box 
should be faster than this, but maybe they're running M$ OS 
(I doubt it).

Just a thought.  :)

PS: this message will suck up another 1000 (give or take) seconds.

-- 
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Re: Very slow propagation of mailing list?

[Henrik Geleff]

This particular message took 8 hours to get to me and the major part of
that time was spent in the cygnus.com domain; but that does not
necessarily means that the problem is in the cygnus domain, problems in
mail transport can be caused by the inability of cygnus.com to find a
computer that is willing to receive the outgoing mail or a long queue of
outgoing mail.

The outgoing queue should be longer as new names have been popping up
with new issues.

Difficulty in finding a computer willing to receive a message happens to
any mail transport, it is just bad luck if somebody on the mailing list
is causing the problem.

Regards

Henrik Geleff

I have attached the original mail header:
       Received: from cygnus.com by mail0.spidernet.net
(ElectricMail-MESSAGE-2.0-GAMMA-SSM1.1-ANTISPAM)
                id AA12787; Fri, 13 Jun 1997  06:25:58 +0300 (EET DST)
       Received:
                (from daemon@localhost) by cygnus.com (8.8.5/8.8.5) id
MAA07673 for gnu-win32-outgoing;
                Thu, 12 Jun 1997 12:47:58 -0700 (PDT)
       Received:
                from ohreally.bbc.com (ohreally.bbc.com
[198.175.187.25]) by cygnus.com (8.8.5/8.8.5) with
                ESMTP id MAA07668 for <gnu-win32@cygnus.com>; Thu, 12
Jun 1997 12:47:54 -0700 (PDT)
       Received:
                from ohreally.bbc.com (ohreally.bbc.com
[198.175.187.25]) by ohreally.bbc.com (8.8.5/8.8.5)
                with SMTP id PAA08556 for <gnu-win32@cygnus.com>; Thu,
12 Jun 1997 15:47:50 -0400
                (EDT)

Chris Faylor wrote:

> I've noticed that it sometimes takes more than 24 hours for my email
> to the mailing list to show up on the mailing list.  Looking at the
> submission times of all of the articles today it appears that I am not
>
> alone.
>
> I've also noticed that I get personal responses to email about 24
> hours
> after I've sent something.
>
> So the question is: Is there a reason why the gnu-win32 list is so
> slow?
> Is the Cygnus machine *incredibly* bogged down or is there some other
> bottleneck somewhere?  I don't notice this kind of delay in any of the
>
> other mailing lists to which I subscribe.
> --
> http://www.bbc.com/     cgf@bbc.com                     "Strange how
> unreal
> VMS=>UNIX Solutions     Boston Business Computing        the real can
> be."
> -
> For help on using this list (especially unsubscribing), send a message
> to
> "gnu-win32-request@cygnus.com" with one line of text: "help".



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Re: Very slow propagation of mailing list?

[Geoffrey Noer]

$Bill Luebkert wrote:
> 
> How big is this list?

1300+ people including quite a few mirror lists so more people than that
read what's sent to it.

I believe the size of the list is the main culprit as far as the slowdown
is concerned.  (I've asked our sysadmins to look into it but no
promises...)

-- 
Geoffrey Noer
noer@cygnus.com
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Re: Very slow propagation of mailing list?

[Chris Faylor]

>Chris Faylor wrote:
>>I've noticed that it sometimes takes more than 24 hours for my email
>>to the mailing list to show up on the mailing list.  Looking at the
>>submission times of all of the articles today it appears that I am not
>>alone.
>>
>>I've also noticed that I get personal responses to email about 24 hours
>>after I've sent something.
>>
>>So the question is: Is there a reason why the gnu-win32 list is so slow?
>>Is the Cygnus machine *incredibly* bogged down or is there some other
>>bottleneck somewhere?  I don't notice this kind of delay in any of the
>>other mailing lists to which I subscribe.
>
>How big is this list?
>
>I also noticed a 20 hour delay in getting messages on the win32 Perl
>list.  I computed that if it takes 1 second to send a message to each
>user (kinda slow, but just as an example) and there are over 1000
>people on the list, then it would take 1000 seconds per email to 
>relay it to the list.  20 hours is 72000 seconds / 1000 seconds per 
>message = 72 messages per 20 hour period max.
>
>All of that is based on a 1 second relay time.  Some will be more,
>large postings of binaries, etc.  Most should be less.  A Unix box 
>should be faster than this, but maybe they're running M$ OS 
>(I doubt it).
>
>Just a thought.  :)

That doesn't take concurrency into account, but your point is well
taken.

I do know that the perl porters list is fairly large but it does
not have anything like the propagation delay of gnu-win32.

It is odd, though, that my last message on this subject took only a few
hours to propagate.  Go figure.

cgf
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