Sampler memory management in MainStage

See Sampler settings.

Multigigabyte sample libraries are commonplace today, delivering incredibly detailed and accurate instrument sounds. In many cases, these sample libraries are too large to fit into your computer random-access memory (RAM). To use these huge sampler instruments, Sampler can use a portion of your hard drive as virtual memory. When you turn on Sampler virtual memory, only the initial attacks of audio samples are loaded into the computer RAM; the rest of the sample is streamed in real-time from the hard drive.

MainStage automatically addresses all available system memory. The amount of RAM available for use by Sampler is determined by several factors, including:

• The amount of physical RAM installed in your computer.

• How much RAM other open applications and the operating system are using.

• How much RAM MainStage is using. This varies in accordance with the number and size of audio files in the concert, and other plug-ins used. Sample playback instrument plug-ins not made by Apple can significantly affect the amount of RAM that MainStage uses.