Subject: Re: [ecasound] reverse audio object added
From: Kai Vehmanen (k_AT_eca.cx)
Date: Tue Jan 29 2002 - 22:30:54 EET
On Tue, 29 Jan 2002, Jeremy Hall wrote:
> for the db stuff, is this a latency hog or does it properly calculate the
No, db stuff only affects non-realtime objects. They don't affect the
latency in any way.
> capture offset? I am finding that if I use -z:nodb that my ecasounds are
> killed by jack's subgraph manager. Something seems to have happened to
> the I/O stuff recently causing a performance hit.
This is to be expected. Purpose of -z:db is buffer audio object, which
don't meet realtime requirements (for instance disk i/o operations
sometime last too long). So if you disable the buffering with -z:nodb,
nonrealtime objects can block the engine. And if the engine is blocked, so
is the jack client (-> xrun). Because of this, in 2.1devX -z:db is enabled
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