16 Sep
2016
16 Sep
'16
10:34 p.m.
On Fri, September 16, 2016 3:01 pm, Chris Caudle wrote:
Wasn't there a difference in real-time safe
functions used by one or the
other?
I think maybe this is what I was remembering:
http://www.spinics.net/lists/linux-audio-users/msg103851.html
Mark Curry:
"To clarify one other point in this thread, zyn
is not absolutely 100%
realtime safe and stoat can certainly point out the few remaining issues
(there is a single location for memory allocation/deallocation which
needs to be
corrected (NO LOCKS)).
Compared to yoshimi however it is an absolutely night
and day difference.
Based upon checking yoshimi's git again it should be essentially equal
to the realtime safety that zyn had back at its 2.4.4 release."
"As part of trying to correct these long standing
issues within
ZynAddSubFX one of the tools that I wrote starting back in 2012 was
stoat: https://github.com/fundamental/stoat"
The announcement for the 2.5.0 release of Zyn has links to two graphs
showing the number of function calls which are not, or potentially not,
real-time safe. The graph of 2.4.4 is so dense it is unreadable, the
equivalent graph for 2.5.0 is fairly small.
http://lalists.stanford.edu/laa/2015/02/0006.html
"The 2.5.0 Release of ZynAddSubFX is now
available.
"This release is mainly focused on fixing some of the core architectural
flaws that have historically existed.
As a result this release should behave much better under jack
and interfacing with the realtime side of things is *much* easier now.
...
"Additionally the callgraph of the realtime safe
hazards can be seen
in two large images:
http://fundamental-code.com/2.4.4-realtime-issues.png
http://fundamental-code.com/2.5.0-realtime-issues.png "
--
Chris Caudle
