AW: flexfax: Problems submitting very large Number of jobs sequential ly

[Christoph Stotz <pif@logo.de>]

Hello!

The theory of too many files don´t seem to me to be the solution. 

But if it is - how to work-around this problem ?

Is it possible to tell hylafax to call a batch-file if the number
of jobs in queue is smaller than the number of free modemlines
avaible ?

Regards,

Christoph Stotz
logo: GmbH

-----Ursprüngliche Nachricht-----
Von: Hong Kong Observatory [mailto:d1swdev@asiaonline.net]
Gesendet am: Freitag, 24. Juli 1998 09:09
An: Christoph Stotz
Cc: flexfax@sgi.com
Betreff: Re: flexfax: Problems submitting very large Number of jobs
sequential ly

Hi Chris,,

On Thu, 23 Jul 1998, Christoph Stotz wrote:

> Hello !
>
> We are using hylafax to send information to our customers. Normally
> about 500 faxes/day.
>
> >From time to time we have to send more than 5000/day. Before sending
we
> generate all the .tif´s and
> then call a batch-programm that submit´s all the faxes sequentially.
> After some time
> submitting becomes slower and slower and CPU-Usage by faxq gets
higher:
>
> ps -aux | grep faxq
>
> uucp      5139 24.0  2.1  2552  1348  ?  R    Jul 21 631:16
> /usr/sbin/faxq
>
> We are using 200MHz Pentium Pro with 64MB of RAM and 12GB of Harddisk,
> so this
> should not be the problem. After 1500 jobs in the queue, the time
> between two submitted jobs
> is about 7-10 seconds.
>

I don't think it's the problem of CPU usage or disk space shortage. May
be
it is because of too many files created in a directory. In UNIX, when
too
many files created in a directory (I forgotten how many), the system
will
be required to create indirect pointers for disk blocks. Then the system
performance will be degraded very much.

> Is there a way to change this ?

I think you may control the number of FAX job to submit each time. Say
after submitting 500 jobs then wait some time and then another 500 jobs.

> > > Regards,
>
> Christoph Stotz
> logo: GmbH
>
> PS: I´m suspecting that it could by a "low memory" problem, but I do
not
> understand whay hylafax
> should use 50 MB of RAM for 1500 jobs ???
>
> PPS:
>
> Linux 2.0.30
> Hylafax 4.0pl
>
>

K.S.Wat SSA(D)12
Computer Division,
Hong Kong Observatory.