[speex-dev] XScale realtime encoding possible?
mal at komcept.com
Sun Nov 9 13:16:58 PST 2003
Jean-Marc Valin wrote:
> I just did some experiments and it seems like the high system CPU time
> is not due to one specific part of the code, but rather to the extreme
> inefficiency of float emulation under Linux. I was expecting float
> emulation to run something like 30 times slower than integer, but it
> looks like its more like 3000 times slower. This means that all of the
> float operations must be removed for the code to work properly. ...or
> maybe there's a way to make the emulation in a library instead of making
> the kernel trap illegal instructions.
Is it a long job to remove the remaining floating point ops? Is it likely
to be attainable this year? I would like to help if possible.
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