The first -p before the driver definition is the number of jack ports IIRC.

On Fri, Jan 16, 2009 at 11:43 AM, Daniel James <dan...@64studio.com> wrote:

> Hi Mira,
>
>  unfortunately I have to report some system freezes with runing jack on my
>> 2.1 etch/lenny system.
>>
>> freezes with these jack's settings:
>>
>> /usr/bin/jackd -R -p128 -t5000 -dalsa -r44100 -p16 -n3 -D -Chw:0 -Phw:0
>> -i2 -o2 -Xseq
>> /usr/bin/jackd -R -p128 -t5000 -dalsa -r44100 -p32 -n3 -D -Chw:0 -Phw:0
>> -i2 -o2 -Xseq
>> /usr/bin/jackd -R -p128 -t5000 -dalsa -r44100 -p64 -n3 -D -Chw:0 -Phw:0
>> -i2 -o2 -Xseq
>>
>
> Those settings are quite weird, you are running two different -p settings
> per command line, for example.
>
> Also, -p16 is extremely low latency, I would expect that to cause problems.
> Try something like:
>
> /usr/bin/jackd -R -dalsa -dhw:0 -r44100 -p256 -n3
>
> then if that works OK try -p128 and see if you get xruns.
>
> I personally use -r44100 with -p128 -n2 for tracking (and -p256 -n2 for
> mastering) with a Delta 1010, but -n3 for any USB or onboard sound chipset
> which only opens at -r48000.
>
>  PS: I will test latter 3.0 Alpha
>>
>
> Please do, and try Free's new 2.6.26 RT kernel with it. We need lots of
> testing on that combination, as it's likely to be the basis of the 3.0 beta
> release.
>
> Cheers!
>
> Daniel
>
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