[MLB-WIRELESS] Duplicates & slow list

[Minstral]

You have a lot of time on your hands dont you =)

----- Original Message -----
From: "Will Lotto" <lotto at impulse.net.au>
To: "dwayne" <melbwireless at wireless.org.au>
Sent: Wednesday, February 13, 2002 7:50 PM
Subject: Re[2]: [MLB-WIRELESS] Duplicates & slow list


> Ahh, come on, anyone can do maths to make numbers look big... ready?
> There are 253 members on the list, today there have been about 53
> messages. If each message is an average of 4kb, thats 1mb of data sent
> per message.
> This works out to approx. 53MB of data per day, or, 19GB per year.
> If you count that about 10% of the messages don't go through first
> time, and need to be resent, that adds 5.3MB per day, totaling 20.9GB
> per year.
>
> However, 1mb per message sent isn't that much. if there are, say, 72
> messages sent a day, thats only 3 an hour. so once every 20 minuites
> the mail server has to send 1mb of data. .. averaged out, the mail
> server is sending at .85k/s. .. If you expect the message to be sent
> to everyone on the list within 1 minuite, the mail server needs an
> avalable bandwidth of 20kb/s (160kbit/s) which it can max out for one
> minuite every 20 minuites. ... or, if you expect a turnaround of 2
minuites,
> that would require a 80kbit/s pipe.
>
> In real terms, if the mail server was given a 64kbit pipeline,
> everyone's mail would be delivered in 128 seconds. .. This is *not* a
> huge amount of bandwidth / mail.
>
> Now I'm not saying the people who run this list owe us anything, nor
> am I in a position to complain. I'm just saying there's a bottleneck
> somewhere, and if it were my network, I wouldn't call it 'normal'. ..
> after all, a mail server on a dialup line would have enough bandwidth
> to deliver the mail in 5 mins... and since there's one message (av)
> per 20 mins.. it'd keep up with the volume :)
>
> Will.
>
> > Steven Haigh wrote:
>
> >> We also have 253 members on the list.... Now for some quick maths (uh
oh)
> >> and the server will have sent 11,132 email out today alone... That's
> >> assuming *everyones* mail server is responding etc...
>
> > This is why cascading mail servers is a very good idea.
>
> > Dwayne
>
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>
>
> ---
> "They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety." -- Benjamin Franklin, 1759
>
>
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