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Re: question about sendmail and bandwidth
- To: Hetz Ben Hamo <hetz(at-nospam)magnifire.net>
- Subject: Re: question about sendmail and bandwidth
- From: Oleg Goldshmidt <ogoldshmidt(at-nospam)computer.org>
- Date: 09 May 2001 15:50:41 +0300
- Cc: linux-il(at-nospam)linux.org.il
- Delivered-To: linux.org.il-linux-il@linux.org.il
- In-Reply-To: Hetz Ben Hamo's message of "Wed, 9 May 2001 13:25:59 +0300"
- Organization: Speaking for myself only.
- Original-Sender: ogoldshmidt@computer.org
- References: <200105091223.f49CNcq01454@genie.magnifire.com>
- Reply-To: ogoldshmidt(at-nospam)computer.org
- Sender: ogoldshmidt(at-nospam)comgates.co.il
- Sender: linux-il-bounce(at-nospam)cs.huji.ac.il
- User-Agent: Gnus/5.0807 (Gnus v5.8.7) XEmacs/21.1 (Cuyahoga Valley)
Hetz Ben Hamo <hetz@magnifire.net> writes:
> The network here has 128K Sifranet line, and everything works ok, until it
> comes to sending emails (using sendmail)
>
> When someone send here email - specially big emails, then our line is going
> down to its knees.. what I mean is that ping to our ISP (Barak) gives me
> something like 2-3 seconds!
How big are the emails? If people send really big attachments as a
matter of course, the emails can clog the line easily. It is not
unusual to see a few pages of Word inflate to a few MB (hereafter
b is bit, B is byte). Let's do the math, assuming you really get
128Kb/s, and 1B=8b:
1 MB / 128Kb/s = 62.5 s = 1 minute + change.
If you send something like that, it does not surprise me that it
takes a low priority ICMP packet a couple of seconds to get through
this traffic jam twice.
Am I being stupid? Again?
--
Oleg Goldshmidt | ogoldshmidt@NOSPAM.computer.org
"I'd rather write programs to write programs than write programs."
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