I have a 1 Ghz powerbook with a gig of ram running LAP 5.5 on os 9.2.2 . I'm using a Midiman Duo as my USB audio device and EXS24 MkII as my softsampler/synth with no external sound devices. I like the "G4 Powerbook setup" file that comes with LAP with the VST effect busses set up. I have 6 EXS24 instruments running with the 4 busses sets appropriately for each track and one audio track for vocals. The EXS24 instruments are not at all "large memory" instruments but my CPU monitor seems to be running at about 75 - 80% at some points and listening to discussions, people were getting 24 + tracks and not more than 50% CPU. I have the virtual memory on in case I use a big instrument and have about 850 Mb's applied to ram for LAP but is there a setting that perhaps I have not set right or something I'm doing that is causing the CPU to have to work so hard? thanks, Simon

On a fine day, 02-09-2003, simon james wrote: >I have a 1 Ghz powerbook with a gig of ram running LAP 5.5 on os 9.2.2 >. I'm using a Midiman Duo as my USB audio device and EXS24 MkII as my >softsampler/synth with no external sound devices. I like the "G4 >Powerbook setup" file that comes with LAP with the VST effect busses >set up. I have 6 EXS24 instruments running with the 4 busses sets >appropriately for each track and one audio track for vocals. The EXS24 >instruments are not at all "large memory" instruments but my CPU >monitor seems to be running at about 75 - 80% at some points and >listening to discussions, people were getting 24 + tracks and not more >than 50% CPU. I have the virtual memory on in case I use a big >instrument and have about 850 Mb's applied to ram for LAP but is there >a setting that perhaps I have not set right or something I'm doing that >is causing the CPU to have to work so hard? 2 things: 1) the 850 mb for Logic is way over the top on a 1 gb machine. Trim it down to something like 200 mb instead. Logic will grab memory when it needs it -- but then of course it has to be available in the first place. What you do is thus counterproductive, as you make memory unavailable while it may be needed. 2) cpu-usage for exs-instruments varies wildly, depending on whether an instrument uses the filter or not (and depending on the number of simultaneous layers -- watch the 'voices' counter when you play 1 note). Using single-layer, no-filter instruments, you should be able to get quite a few running without overloads. -- Hendrik Jan Veenstra h @ k n o w a r e . n l Omega Art: http://www.omega-art.com/

> The EXS24 instruments are not at all "large memory" > instruments but my CPU monitor seems to be running > at about 75 - 80% at some points and > listening to discussions, people were getting 24 + tracks > and not more than 50% CPU. > I have the virtual memory on in case I use a big instrument... I was under the impression that using virtual memory is a bad idea, and the installation guide says to turn it off. I'd do that, make your disk cache standard size, and, as was already suggested, reduce the amount of RAM you've assigned to Logic. Take care, Greg

> > 1) the 850 mb for Logic is way over the top on a 1 gb machine. Trim > it down to something like 200 mb instead. Logic will grab memory > when it needs it -- but then of course it has to be available in the > first place. 2) cpu-usage for exs-instruments varies wildly, > depending on whether > an instrument uses the filter or not (and depending on the number of > simultaneous layers -- watch the 'voices' counter when you play 1 > note). Using single-layer, no-filter instruments, you should be able > to get quite a few running without overloads. > thx for your help Simon

On a fine day, 02-09-2003, embryo_music wrote: >[EXS] > > I have the virtual memory on in case I use a big instrument... > >I was under the impression that using virtual memory is a bad >idea, and the installation guide says to turn it off. I'd do that, >make your disk cache standard size, and, as was already >suggested, reduce the amount of RAM you've assigned to Logic. He's talking about the EXS's 'streaming from disk' option, which is a kind of virtual memory. It's not about the OS-level VM, which indeed is a bad idea. -- Hendrik Jan Veenstra h @ k n o w a r e . n l Omega Art: http://www.omega-art.com/