Ah! But it’s not necessarily the aggregate throughput over a 1-day span
that’s the issue, it’s the burstiness of the traffic.
Most posts occur between 4AM and 6PM Eastern time. Because we want the list
to be maximally interactive, we have Lyris tuned to receive and send mail
fairly rapidly. This allows people to engage in as “near real time”
conversations as possible on the lists.
We presently send NTDEV and NTFSD email at a peak rate of about 4000-5000
messages per hour. Thus, something like two responses to a posting can be
distributed to ONE of the lists in about an hour. Our experience is that
this completely consumes an entire T1.
There are a ton of other issues that call for the infrastructure upgrade
here at OSR as well: We’re getting far too much latency on the T1 presently
used for list server traffic, etc, etc.
Of course, if folks were willing to wait 12 hours to get their postings, we
could throttle the throughput back. But we don’t think that’d be maximally
helpful to the development community.
Peter
NTDEV/NTFSD/WINDBG List Slave
-----Original Message-----
From: Jan Bottorff [mailto:xxxxx@pmatrix.com]
Sent: Friday, January 11, 2002 11:17 AM
To: Peter G. Viscarola
Cc: NT Developers Interest List
Subject: Re: [ntdev] List Server Problems on NTDEV
>These problems were caused by our bringing up an additional
T1 and the
>requisite network parts to support it – in large part in
response to
>the increased traffic on NTDEV/ NTFSD/ WINDBG (which now average a
>total of over 30,000 messages per day).
Thanks for the update Peter.
That seems odd though, 30,000 messages should only be 120 MBytes/day
(assuming each message was 4 kbytes, which is very generous
for text). A
128 kbps line should be able to deliver 1 GByte/day. Is it
possible the
protocol overhead and DNS lookups could consume some HUGE
amount of bandwidth?
Perhaps my math is fuzzy this early in the morning.
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