Old 05-16-2022, 08:48 AM   #1
XoechZ
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Default ALSA: using mmap interleaved

Hello!

When I start Reaper from a terminal, I always get this message:

ALSA: using mmap interleaved

I donīt know if this is an error, a warning or simply a notification. I have googled a while about this, but found nothing useful.
I have no problems in Reaper, everything is fine. I just donīt know where this comes from and what it means.

Any ideas?
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Old 05-16-2022, 10:23 AM   #2
chmaha
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Quote:
Originally Posted by XoechZ View Post
Hello!

When I start Reaper from a terminal, I always get this message:

ALSA: using mmap interleaved

I donīt know if this is an error, a warning or simply a notification. I have googled a while about this, but found nothing useful.
I have no problems in Reaper, everything is fine. I just donīt know where this comes from and what it means.

Any ideas?
Not an error and, in fact, probable cause to rejoice. See https://www.linuxjournal.com/article/6735:

Quote:
Many devices under Linux also support the mmap system call, which maps them into memory where they can be manipulated with pointers. Finally, ALSA supports opening a PCM channel in mmap mode, which allows efficient zero copy access to sound data.
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