Re: [jazzplusplus-devel] Successful Jazz++ build and run on Ubuntu 7.10

[D.B. M. <db...@ho...>]

Greets,

----------------------------------------
> Date: Mon, 26 May 2008 18:17:03 -0700
> Subject: Re: [jazzplusplus-devel] Successful Jazz++ build and run on Ubuntu	7.10
> 
> PS = Pete Stieber
> PS>> Just wanted to report this.  Unfortunately, the
> PS>> qjackctl/qsynth/Jazz++ playback exhibited more
> PS>> latency problems than I have heard on any other
> PS>> distribution/OS.
> 
> DM = D.B. Moore
> DM> Oh dear....I was expecting this of sorts. There are
> DM> a number of threads out there related to kernel
> DM latency issues in Ubuntu ...
> DM>
> DM> One thread I saw from a developer read something
> DM> like..."it appears that the Ubuntu developers have
> DM> made every effort to make a linux kernel upgrade
> DM> next to impossible for users to successfully complete
> DM> on Ubuntu installations"
> DM>
> DM> Note - I am *not* 'distro-centric'  - I am just the
> DM> reporting scribe ;-)
> 
> PS>> I'll post the kernel configuration at a later date.
> PS>> Maybe I have  something configured incorrectly.
> 
> DM> Please do - you can imagine how many 'FAQ' entries
> DM> are going to be directly related to one linux distro
> DM> or another, and I do intend to document such things
> DM> as they obviate themselves.
> 
> PS>> The config file for the Ubuntu 7.10 setup with latency problems is attached.
 
This kernel isn't too much different from the mandriva makeup, expecting
one critical thing -- CONFIG_HZ = 250

I doubt it could've run the softsynth oscillators accurately with
that setting - it would've sounded disturbingly distorted...


Regards,

Donald B


PS: the ubuntu kernel has a lot of stuff builtin that people should
never need.....
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