Tuning SFZ disk streaming
Posted: Wed Jan 04, 2023 5:12 am
Debian, Rosegarden to LinuxSampler using Jack for both MIDI and audio connections. 16 GB RAM. I am working on a chamber piece consisting of a string quartet plus a flute, oboe, and piano, all SFZ samples. When all the parts are going I get dropouts. The maximum voices I have seen in use through qsampler console window is 63, so I have increased the VOICES parameter to 120. The STREAM parameter is 400. But I still get the dropouts. There are 4 CPU cores but nothing is being used over 10%.
If I play one part at time, everything is fine. If I bounce the audio one at a time into additional Rosegarden tracks, all of those playback with no problem. It is just the use of the SFZ engine with all the parts at once where I have a problem. To me this suggests a buffering problem reading the samples. All of the SFZ files are on their own 1 TB SSD, connected directly to a SCSI bus.
Are there any tuning settings for how the sample reading is done? I know I am not the first person to run into this sort of problem.
If I play one part at time, everything is fine. If I bounce the audio one at a time into additional Rosegarden tracks, all of those playback with no problem. It is just the use of the SFZ engine with all the parts at once where I have a problem. To me this suggests a buffering problem reading the samples. All of the SFZ files are on their own 1 TB SSD, connected directly to a SCSI bus.
Are there any tuning settings for how the sample reading is done? I know I am not the first person to run into this sort of problem.