Re: [hylafax-users] hardware requirements ?

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

moritz winterberg wrote:

> Hello List,
>
> I have a question for those of you weho are experienced with hylafax in
> strong traffic environments.
>
> I am running hylafax with an Eicon Diva Server PRI card having 30
> channels (modems) through capi4hylafax. Also the machine will do some
> conversions (tif2pdf and pdf2gif) for all incoming faxes.
>
> Assuming a throughput of 3000 pages (faxes) per hour (which should be
> the peak of what the eicon card is capable to handle), what would be the
> system hardware requirement regarding CPU and Memory ?
>
> At the moment the machine has a Pentium 4 2.4 G with 512 MB RAM. But it
> is still in test environment and I wonder if I need to upgrade the
> hardware before going productive ?

I'm not familiar with how resource-intensive capi4hylafax is, so my 
comments only are in regards to how HylaFAX works with 
AT-command-interface modems.

You should be able to run 30 channels full-time sending or receiving 
with no problems with the system as you have it now... at least as far 
as faxsend and faxgetty go.  Those are not very resource-intensive 
programs.  Fax is not very demanding by today's CPU/memory standards.  
In fact, you could easily run 30 channels full-time in Class 1 ECM with 
the system as you have it now.

So faxsend and faxgetty aren't an issue... but what could potentially be 
an issue would be faxq and its children (send conversion processes) and 
faxrcvd and post-reception processing.  If, for some reason, you have 30 
faxes all received and completed nearly simultaneously, and if your 
FaxDispatch/faxrcvd is doing some heavy-lifting, then you could get into 
trouble... meaning things would get slow... and its possible that this 
could affect fax protocol with some concurrent faxgetty/faxsend 
processes.  Likewise, if for some reason, you have 100 jobs all hit the 
queues at the same time, faxq can easily start up a huge number of 
processes in preparing the TIFF/F image files for faxing.  These can 
also get you into trouble.

Those things said, the chances are not likely that you'll ever run into 
those problems unless you're somehow triggering the problem yourself by 
various activities that you may do, and you'd probably notice it right 
away... and then hopefully you'd make modifications to the way you do 
things.

Lee.

____________________ HylaFAX(tm) Users Mailing List _______________________
 To subscribe/unsubscribe, click http://lists.hylafax.org/cgi-bin/lsg2.cgi
On UNIX: mail -s unsubscribe hylafax-users-request@xxxxxxxxxxx < /dev/null
 *To learn about commercial HylaFAX(tm) support, mail sales@xxxxxxxxx*