Welcome to JACK, the Jack Audio Connection Kit.
Please see the website (http://jackit.sf.net/) for more information.
NOTE: If you are using reiserfs or ext3fs or anything except ext2fs
for the directory where JACK puts its temporary files (/tmp by
default), then the JACK team recommends that you do *one* of the
following:
----------------------------
Mount a tmpfs on /tmp. You should have a lot of swap space available
in case some programs try to write very large files there.
In your /etc/fstab add a line:
none /tmp tmpfs defaults 0 0
You'll probably want to reboot here, or kill X then 'mount /tmp'.
---- OR ----
Alternatively, you can do this without affecting your /tmp:
# mkdir /mnt/ramfs
[edit /etc/fstab and add the following line]
none /mnt/ramfs tmpfs defaults 0 0
Then add --with-default-tmpdir=/mnt/ramfs to the JACK configure
line when you build it. No clients need to be recompiled.
------------------------------
Failure to do one of these could lead to extremely poor performance from JACK,
since its normal operation will cause bursts of disk I/O that are
completely unnecessary. This suggestion can also be used by ext2fs
users if they wish.