Re: [hylafax-users] large multiport systems

["Sedat Yilmazer" <sedat@kibele.com>]

 I do not know about the Cyclades Cyclom-64Ze modems. Main concern here
is the number of interrupts. You have a short FIFO on that card  (like
16 ) you will get an interrupt for every ~16 bytes. At 14400 bps (
~1.5Kbytes/sec) you will receive about 300,000 interrupts per second
which is high. But if these modems have a deeper FIFO or a better
interface than the total IO rate should be enough to handle the load (
200 lines, 40 sec/fax 30 KB/fax => ~4MB/min IO rate)

 Sedat YILMAZER 


-----Original Message-----
From: hylafax-users-bounce@hylafax.org
[mailto:hylafax-users-bounce@hylafax.org] On Behalf Of jlewis@lewis.org
Sent: Friday, August 22, 2003 5:43 PM
To: hylafax-users@hylafax.org
Subject: [hylafax-users] large multiport systems

I've looked through the faq done lots of googling and have seen mention
of
people using HylaFax with 30-48 modems using multiport serial cards and
relatively old hardware (PPro systems), or single port [T1|E1]/modem
cards
such as Eicon's.  I have a customer interested in setting up a few large
fax servers (perhaps ~200 ports per system).

For scalability and management, T1/modem cards (like Eicon's) would be
ideal, but cost concerns will likely force them to go with external
rackmount modems and multiport cards...likely Cyclades Cyclom-64Ze's 
unless there are much cheaper T1/modem cards that work well with Linux
and 
HylaFax.

Assuming the systems will be used primarily for broadcast (1 page faxes 
converted once, then sent to many recipients) is it reasonable to expect
a 
modern PIII/PIV based Linux system to send 200 or more faxes 
simultaneously?
  
----------------------------------------------------------------------
 Jon Lewis *jlewis@lewis.org*|  I route
 System Administrator        |  therefore you are
 Atlantic Net                |  
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