Re: 96 kHz -- a bottleneck somewhere

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Simon, that's wonderful!  Thanks!!!

Jonathan E. Brickman
Ponderworthy Music | jeb@xxxxxxxxxxxxxxxx | (785)233-9977 | 
http://ponderworthy.com <http://ponderworthy.com/>





------ Original Message ------
From: "Simon Wise" <simonzwise@xxxxxxxxx>
To: linux-audio-user@xxxxxxxxxxxxxxxxxxxx
Sent: 5/8/2014 7:22:47 AM
Subject: Re:  96 kHz -- a bottleneck somewhere

>On 27/04/14 03:23, Jonathan E Brickman wrote:
>>I decided to try 96 kHz audio with the S.R.O. (Supermega Rumblic 
>>Organ), my slightly Aslan-like synth (it is not a tame device really), 
>>and found items which may be of interest:
>>
>>1. At 96 kHz, schedtool definitely matters. Taking it out increased 
>>xruns a
>>lot. I tried to figure out what was interfering via htop, but it was 
>>very
>>unclear. So I'm keeping the schedtool for now. I could believe that if 
>>I
>>reengineer for a zero-X default setup (likely to happen in the future) 
>>this
>>problem might go away, X and the desktop certainly do have lots of 
>>demands.
>>I *think* the only big piece missing for me in this is keymapping, I 
>>use
>>F-keys to switch patches, quite easy in both LXDE and MATE.
>
>thd .... otherwise known as trigger-happy-daemon ... does keymapping 
>without X,
>debian package is:
>triggerhappy
>
>Description-en: global hotkey daemon for Linux
>  Triggerhappy watches connected input devices for certain key presses
>  or other input events and runs administrator-configured
>  commands when they occur. Unlike other hotkey daemons, it runs as a
>  persistent, systemwide service and therefore can be used even
>  outside the context of a user or X11 session.
>  .
>  It can handle a wide variety of devices (keyboards, joysticks,
>  wiimote, etc.), as long as they are presented by the kernel as
>  generic input devices. No kernel patch is required. The daemon is
>  a userspace program that polls the /dev/input/event? interfaces
>  for incoming key, button and switch events. A single daemon can
>  monitor multiple input devices and can dynamically add additional
>  ones. Hotkey handlers can be assigned to dedicated (tagged) devices
>  or globally.
>  .
>  For example, this package might be useful on a headless system to
>  use input events generated by a remote control to control an
>  mpd server, but can also be used to allow the adjustment of audio
>  and network status on a notebook without relying on user specific
>  configuration.
>  .
>  Key combinations are supported as well as the hotplugging of devices
>  using a udev hotplug script; the running daemon can also be influenced
>  by a client program, e.g. to temporarily pause the processing of
>  events or switch to a different set of hotkey bindings.
>Homepage: http://github.com/wertarbyte/triggerhappy
>
>
>Simon
>
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