Re: [LAU] [ANN] tschack-0.120.1 and PyJackd-0.1.0

On Sat, Jan 01, 2011 at 11:03:11PM +0100, Robin Gareus wrote:
> On 12/31/2010 10:03 PM, Philipp Überbacher wrote:
> > Excerpts from torbenh's message of 2010-12-30 16:30:33 +0100:
> [snip]
> >>>>
> >>>> get it here:
> >>>> http://hochstrom.endofinternet.org/files/tschack-0.120.1.tar.gz
> >>>> http://hochstrom.endofinternet.org/files/PyJackd-0.1.0.tar.gz
> >>>
> >>> Not sure what half of that means :)
> >>> One thing I think you forgot to mention but might be of interest is
> >>> jack-session support
> >>
> >> right. jack-session is supported. but thats what jack1 and jack2 also
> >> support nowadays.
>
> There's support for it in both jack1 and jack2 SVN, but there's no
> official release where it is enabled by default.
>
> >> well.... which of the features is unclear ?
> >
> > Oh, I thought there is no jack1 release with jack-session yet, dunno
> > about jack2.
> >
> >>>> features:
> >>>> - jack1 mlocking
> >
> > Means for a user?
>
> I'd be interested in this as well.
>
> `man 2 mlock` - preventing memory from being paged to the swap area.
> that's needed to prevent stalling audio-applications because they're
> swapped out.
>
> What's the difference between jack1 and jack2 mlocking? Announcing this
> as feature for tschack hints that jack1's implementation is "better" - why?

jack2 only mlocks the port memory.
but it never calls mlockall, which makes sure, that everything is locked
into memory.

>
>
> TIA,
> robin
>
> >>>> - controlapi which works even when libjackserver.so is loaded RTLD_LOCAL
> >
> > Means for a user?
> >
> >>>> - smp aware
> >>>> - backendswitching
> >
> > Means for a user?
> >
> >>>> - strictly synchronous like jack1. (-> no latency penalty)
> >
> > Async (jack2?) has a latency penalty?
> >
> >>>> - clickless connections.
> >>>> - shuts down audio processing when cpu is overloaded for too long.
> >
> > I guess most users don't know very much about the technical details of
> > the jack implementations.
> >
> > _______________________________________________
> > Linux-audio-user mailing list
> > Linux-audio-user@email-addr-hidden
> > http://lists.linuxaudio.org/listinfo/linux-audio-user

-- 
torben Hohn
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