about -z:db (was: Re: [ecasound] picking up stattic with -b:64)

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Subject: about -z:db (was: Re: [ecasound] picking up stattic with -b:64)
From: Kai Vehmanen (kaiv@wakkanet.fi)
Date: Fri Jan 28 2000 - 11:45:21 EET

On Tue, 25 Jan 2000, Jeremy Hall wrote:

> what does db do and how can I make it useful for me?

-z:db is a rather new feature and I haven't advertised it that much,
because only now it's starting to be stable enough for normal use.
Anyway, with -z:db, 2x512kB buffers are reserverd for all wav&raw
inputs. When processing, a separate thread takes care of these
buffers, mapping the needed data regions to memory using mmap()
calls (see 'man mmap'). In most cases, this results in better
performance.

> hey, -t and -tl: seems I am missing some new options. :P

Yup, together with -y, these have proven to be extremely useful. 

-- 
Kai Vehmanen <kaiv@wakkanet.fi> -------- CS, University of Turku, Finland
 . http://www.wakkanet.fi/ecasound/ - linux multitrack audio processing
 . http://www.wakkanet.fi/sculpscape/ - ambient-idm-rock-... mp3/ra/wav

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