Thanks Chuck, Your comments are consitent with what John says about scaling of SpanDSP. It seems that in your configuration, as you've indicated, much of the load was due to generation the images. It's useful in that my load would be at least that, plus the workload imposed by offloading the DSP from the fax boards onto the CPU.
Hmmmm... Since I've already got the hardware and the PRI, maybe I'll setup spanDSP and test it. I'm sure I could count on 15 or so TAUG members to send me some test faxes and tie up the lines. If it runs, then great. If it crushes the box, then that's a valid result too and we'll walk away knowing a little bit more about asterisk and faxing. Additional info is still welcome and I'll be sure to keep you posted on my progress. Dave On 8/25/06, Chuck Mariotti <[EMAIL PROTECTED]> wrote:
Unfortunately, I have no experience running Faxing on Linux or Asterisk. So you will have to take this we a grain (or box) of salt. However, I have run mass faxing systems using 4 line POTS GammaLink fax boards (total of 16 lines). The box was Pentium 3 Class 256MB and running RightFax on Windows 2000. Back then, 16 Channels of simultaneous faxing slowed this machine down considerably (especially on the outbound building personalized pages of course) and that was using dedicated fax hardware for the task. In our case, it was sending out 10,000 faxes within 48 hours. Hopefully someone can contradict me, but I'm not so sure software DSP would work well (and do it's other Asterisk functions you might have it doing) and do it all well. At least, not without a very good machine and a lot of testing. Regards, Chuck -----Original Message----- From: Dave Donovan [mailto:[EMAIL PROTECTED] Sent: Friday, August 25, 2006 1:32 PM To: TAUG Subject: [on-asterisk] CPU load due to faxing Hi everyone, I have a customer considering using Asterisk to receive a large number of faxes, with bursts of 12-15 concurrent receive operations. I've never used it much for faxing. He has a somewhat modest box so I'm somewhat concerned. I can only assume that since the fax work is being done by a software DSP that this creates a fair bit of CPU load. Am I correct? Is it any more than running an IVR, for instance? We're using a T1/PRI and with a Digium card so no wacky attempts at using VOIP, it's pure TDM. I'd be grateful to hear anyone's experience on load issues or opinions on rxfax. Dave -- David Donovan Consultant Fulcrum Solutions --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
-- David Donovan Consultant Fulcrum Solutions
