Better but I expected it to drop under 50% by doing that.  Maybe most of the time is spend doing something other than FP DSP computation?

What's the load with the test patch sine output?

On Sun, Sep 16, 2012 at 3:18 PM, Cyrille Henry <ch@chnry.net> wrote:
hello,

we resintall pd using autoconf and adding this flags.
this example now run at 65% cpu on the same condition (external usb soundcard, 25ms audio buffer)

thanks
cheers


Le 16/09/2012 19:18, chris clepper a écrit :
Try adding this to the CFLAGS when compiling:

|-mfpu=vfp -mfloat-abi=hard|


This will enable the hardware floating point unit on the ARM which is actually the vector processor.  It is apparently off by default so everyone might be using integer fixed point which would be very slow.  Hopefully this will help performance.

On Thu, Sep 13, 2012 at 6:36 PM, Cyrille Henry <ch@chnry.net <mailto:ch@chnry.net>> wrote:

    using 0.44, we manage to have it running with 25ms audio buffer using an external usb soundcard.
    85% cpu about. no clicks.

    cheers
    c


    Le 11/09/2012 19:42, Miller Puckette a écrit :

        One slight tweak: if you type "sudo chmod 4755 /usr/bin/pd" you will
        probably be able to use the mouse clicklessly (at some expense to security!)

        This will be unnecessary in release 0.44...

        cheers
        Miller
        On Tue, Sep 11, 2012 at 07:32:16PM +0200, Pierre Massat wrote:

            Dear List,

            I managed to get the phase vocoder working on my Raspberry Pi, with the
            standard Raspbian wheezy distro.
            It works ok under the following conditions :
            - no GUI activity (even moving the mouse results in awful scratches)
            - the "delay" in Pd is set to at least 50ms
            - 224 Mb of RAM is allocated to the CPU.

            All this using the internal audio output.

            This is quite encouraging...

            Cheers,

            Pierre.


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