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TDA4VM: TDA4VM qnx OS, I/O operator is very slow

yang xiang
Prodigy 205 points
Part Number: TDA4VM

Now I am working on TDA4VM qnx OS, I read offline image files to test my application, I find the I/O operator is very slow, fread() 1MB file should cost 100ms.

Is this reasonable on qnx OS, or existing issue?

  • 0
    TI__Guru** 120451 points

    Hi,

    The media the file is being read from would directly effect the read rate. 

    The SW driver for the media, may have command line options available which could also effect the read rate.

    If the media is in use by another application this could also effect the read rate, as could CPU load and DDR bandwidth at the time the file is being read.

    If the 1MB file is to be used repeatedly you could consider pre-loading it to memory.

    There are no known issues with QNX or other HLOSs on read rates.

    Regards,

    kb