Performance

    Noojee Fax 3.x Performance Testing

    Test platform

    Tested on Intel(R) Xeon(R) CPU 3050  @ 2.13GHz with 1GB

    Send/Receive

    Send/Receive Tiff
    CPU < 1%,  Memory <1Mb

    Each page takes approximately 30 seconds and the memory and cpu is consumed for the entire 30 seconds.

    Conversion process

    MS-Word document

    CPU 17%,  Memory 59Mb,  Conversion Time < 1s

    Additional pages does not add significantly to the time taken.

    Acrobat PDF

    CPU 17%, Memory 1Mb, Conversion Time <1s

    Summary

    As you can see the load due to the transmission and reciept of faxes is insignificant.

    The main load issue is when converting Microsoft Word document and Acrobat PDF files.

    Lets do the maths:

    In a worst case scenario if 30 channels are being used to send MS-Word documents.

    If each MS-Word document submitted contains only a single page to be faxed with the body of the email used as the cover sheet, then each MS-Word document will generate two pages to be faxed.
    On average a single fax page takes 30 seconds to transmit so in a 60 second period each channel can send 2 fax pages for a total of 60 pages per minute. This ignores dial time which will actual increase the transmission time and reduce the load on the system, but for the sake of a doing a worst case scenario we will ignore this gain.
    This means that at peak load the system needs to be able to process 30 MS-Word documents per minute.

    Given that we can process an MS-Word document in under a second and we have 60 seconds to process 30 this isn't a problem.

    Again given a worst case scenario you will need 30 * 59MB = 1.8GB of RAM.

    Recommendations

    Channels Xeon Cores RAM Hard Drive OS
    30 Dual Core 4 GB 5400 RPM Ubuntu 10.04 64 bit
    60 Quad Core 6 GB 5400 RPM Ubuntu 10.04 64 bit
    90 Dual Quad Core 8 GB 7200 RPM Ubuntu 10.04 64 bit
    120 Dual Quad Core 12 GB 7200 RPM Ubuntu 10.04 64 bit
    240 Dual Quad Core 20 GB 15K RPM or SSD Ubuntu 10.04 64 bit
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