Re: [LAU] Horrible number of xruns in Jack (Emu card)

I got the same processor running 64-bit debian sid running jack at 44.1khz, 64 sample buffer on Audiophile 2496 soundcard with no xruns.
Are you running realtime kernel with realtime box checked in qjackctl/settings
(or with -R option on command line)?
(I got 4GB dual-channel RAM and 2 SATA DRIVES...)
My kernel: 2.6.23.11-rt14 #1 SMP PREEMPT RT Wed Dec 26 08:47:49 EST 2007 x86_64 GNU/Linux
Norv

----- Original Message ----
From: Darren Landrum <darren.landrum@email-addr-hidden>
To: linux-audio-user@email-addr-hidden
Sent: Monday, 28 January, 2008 11:42:08 PM
Subject: Re: [LAU] Horrible number of xruns in Jack (Emu card)

Darren
Landrum
wrote:
>
I
hope
someone
can
help
me
with
this.
>
>
I
have:
>
>
Athlon64
Dual-Core
6000+
>
2GB
DDR3
RAM,
running
dual-channel
>
3
x
SATA
hard
disks
>
Emu
1212m
sound
card
>
Ubuntu
Studio
7.10
(Gutsy,
I
think)
>
>
Trying
to
run
JACK
at
44.1khz,
at
a
128
sample
buffer
I'm
getting
on
the
>
order
of
50-60
xruns
a
second.
Even
at
a
4096
sample
buffer,
I
was
>
getting
one
xrun
every
2
seconds.
I
would
think
this
setup
should
be
>
able
to
handle
a
64
sample
buffer
without
any
trouble.
>
>
The
one
caveat
is
I
did
have
to
compile
the
latest
stable
ALSA
from
>
scratch,
so
that
my
sound
card
would
work.
Could
it
be
related
to
the
>
still-beta
driver
for
my
Emu
card?
Or
maybe
I
need
to
recompile
ALSA
>
with
some
options?
>
>
Thank
you
for
any
help.

I
talked
to
my
programming
prof
about
this,
and
he
thinks
the
fact
that
I'm
using
a
64-bit
OS
might
have
a
lot
to
do
with
it.
I'll
try
installing
the
32-bit
version
of
Ubuntu
Studio
at
some
point
this
week
and
see
if
that
changes
anything
(I
keep
all
of
my
data
on
a
separate
partition,
so
it's
not
a
huge
operation
for
me).

-- 
Darren
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