13 Sep
2005
13 Sep
'05
12:07 a.m.
On Mon, 2005-09-12 at 21:01 -0500, Jack O'Quin wrote:
Peter Mogensen <apm(a)bigendian.dk> writes:
Hmm, I noticed that all the problematic apps seem to be synths. How big
are the soundfonts and sample banks that you're loading? If JACK is
doing mlockall() and you have 250-500MB soundfonts (which are quite
common) then there's your problem.
Lee
Lee Revell wrote:
Try running jackd with the -m (--no-mlock) option.
With -R (--realtime), libjack normally does an mlockall() on the
client's address space. It may be that some of these clients allocate
large data areas that are not fully needed, yet get pinned by
mlockall().
(Or, as Lee said, there could be memory leaks.) Sounds like qsynth is the problem, it probably
has a memory leak.
Qsynth is not the only application which can trash the system, if I try
to use it through JACK. As soon as I try to do real work with Timidity,
it also eats my memory.
In general it seems I uickly run out of memory when I use JACK.
Simple things work though.
I'll try to upgrade my system to 768Mb RAM and see if it still is a problem.