Re: [Rosegarden-user] [Fwd: [linux-audio-user] low latency]

[Chris C. <ca...@al...>]

Since none of this has actually been crossposted so far, I'll keep
up the now-off-topic stuff in rg-user only, especially since I don't
subscribe to jackit-devel.  But we do seem to be getting a bit of a
ping-pong effect here:

http://sourceforge.net/mailarchive/forum.php?thread_id=2328846&forum_id=3040

As you've since noted, I would expect Paul Davis to know more than
anyone really wants to know about mmap() already.

He does say though that "we are *only* referring to cases where various
journalling file systems are being used to support /tmp, which is
already rather a strange decision to start with".  I don't get that.
Most people don't ever make a decision about what sort of filesystem
to put /tmp in; practically any current Linux distro will surely by
default just create a journalled root filesystem and stick it in that.
And you don't really want /tmp to have its own partition anyway because
that means you have to decide in advance how big it is.

But I don't know what the cause of the overhead is in the first place,
so I shouldn't really comment.


Chris