[Ardour-Users] Denormals

Geoff Beasley geoff at laughingboyrecords.com
Thu Dec 29 14:20:25 PST 2011

seems it's not denormals then - look at your jack settings, other 
running apps, your RT configuration,plugins etc


On 12/30/2011 08:48 AM, Q wrote:
> Why, when every single track and buss in my session has "Protect 
> against denormals" selected and "Use DC bias" is selected under 
> Options > Performance > Denormal handling, is my session still 
> grinding to a halt?
> What is the point of selecting "Protect against denormals" on tracks? 
> It doesn't seem to be doing anything as every few minutes the CPU load 
> rises to 100% and then drops back to ~35% a few minutes after the 
> transport is stopped.
> Why are the "Flush To Zero" and "Denormals are zero" etc options 
> greyed out when these were available in prior versions of Ardour?
> Going through and deactivating plugins hasn't shown any obvious culprits.
> I'm using 2.8.12, built from source.
> In the time it's taken to write this things have got worse -- with the 
> transport not running the CPU load is 100% all the time and racking up 
> thousands of xruns (does "Stop plugins with transport" have no effect?).
> Thanks in advance,
> Q
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