Re: [LAU] jack2 vs. jack1/zita vs. jack2+zita-a2j, performance differences

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To: michael noble <looplog@...>
Cc: linux-audio-user <linux-audio-user@...>, Jonathan E. Brickman <jeb@...>
Date: Thursday, April 17, 2014 - 7:43 am

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On Thu, Apr 17, 2014 at 3:11 AM, michael noble wrote:

>

absolutely agreed.

>

the zita internal client in jack1 can be configured to any latency
settings, but the default (and optimal) setting matches those of the
server. so in those tests using -A SB, the bridge follows the server
configuration and adds no latency.

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On Thu, Apr 17, 2014 at 3:11 AM, michael noble &l=
t;looplog@gmail.com<=
/a>> wrote:
=
On Thu, Apr 17, 2014 at 3:37=
PM, Paul Davis <
paul@linuxaudiosystems.com> wrote:=

I really don't understand the goal here.=
I'm guessing the goal is to see if better =
performance in driving softsynths can be obtained by using zita-j2a to hand=
le output rather than using jack directly interfacing with Alsa. I don'=
t think it was intended to be a jack1/jack2 match off. To me it seems like =
an interesting experiment, and I hope Jonathan keeps up the tests, despite =
the so far only negative feedback.=A0

One of the =
fun things about being an ignorant user is to sometimes try stuff out just =
for the heck of it and find things even the original creator of something d=
idn't intend. If people only followed rules, entire genres of music wou=
ldn't likely exist, so I say bring on the experimentation.=A0
absolutely agreed. =
=A0
Which is no=
t to say the tests can't be improved. Apart from criticisms already rai=
sed, from my limited knowledge it seems to essentially be comparing full-du=
plex performance of the jack alsa backend with single duplex performance of=
zita-j2a, which hardly seems fair. Another question I have is to whether z=
ita is adding latency in addition to that reported by jack, which the tests=
don't seem to indicate.=A0
the zita internal client in jack1 ca=
n be configured to any latency settings, but the default (and optimal) sett=
ing matches those of the server. so in those tests using -A SB, the bridge =
follows the server configuration and adds no latency.
=A0

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Messages in current thread:
[LAU] jack2 vs. jack1/zita vs. jack2+zita-a2j, performance d..., Jonathan E. Brickman, (Thu Apr 17, 1:54 am)
Re: [LAU] jack2 vs. jack1/zita vs. jack2+zita-a2j, performan..., Paul Davis, (Thu Apr 17, 7:43 am)
Re: [LAU] jack2 vs. jack1/zita vs. jack2+zita-a2j, performan..., Jonathan E. Brickman, (Thu Apr 17, 12:36 pm)