On Friday 12 May 2006 20:13, Q was like: > I'm having denormal problems with some LADSPA plugins, mainly the Triple > Band Parametric with Shelves, Plate Reverb and Glame High Pass filter > (which I started to use to replace that function in the Parametric). > They are really useful plugins but after a short space of time an > instance of one of them will start racking up thousands of Xruns and > processor usage climbs inexorably towards 100%. > > I occasionally had problems before but it seems a lot worse since I > moved to DeMuDi 1.3 and the later version of Ardour that ships with it, > but it's probably just a case of selective memory. > > Sampo suggested on the Ardour forum that I should try compiling the SWH > plugins using SSE instructions -- thanks for that. I got the latest tar > of the plugs and compiled them using those instructions but > unfortunately it hasn't cured the problem. Probably I did something > wrong -- I can't say I fully understood the options in the Readme. > > Has anyone any advice on how to cure this problem, or any ideas where I > might have gone wrong compiling with SSE instructions? Preferably in > words of one syllable or fewer ;-) > > I'm using a Pentium 4 if that makes any difference to anything. I have had problems with the symptoms you're discussing, using the same set-up and the stock demudi kernel (which is very old). I have had much more steady CPU and DSP usage since I upgraded and recompiled my kernel to 2.6.16 - I have been using the TAP plugins more than the SWH ones you mention. I will test them out when I get a spare moment, as the only difference on my system is likely to be the kernel and hardware. -- cheers, tim hall http://glastonburymusic.org.uk/tim We are the people We've been waiting for.
