On 03/01/2015 02:51 PM, Robert Jonsson wrote:
> Sorry to go off on a tangent but is USB comparable in performance to
> firewire under linux now? Latency? Number of channels? Mostly I'm asking
> about latency.
>
> Regards,
> Robert
Hello Robert,
It is comparable though I haven't tested my USB interface with more than
two channels. It runs well at 64/48000*3 (-n3 -p64 -r48000 so 4ms one
way system latency) and it can even run at -n3 -p8 but then I can only
start up Aqualung and listen to a track ;)
I've set up my system in a very similar way like Len described. Some
differences:
- RT kernel
- Jack has a RT prio that doesn't interfere with any other RT prio
- snd-hrtimer is loaded and all ALSA seq stuff uses that
- Light desktop environment (LXDE)
- Ext4 is mounted with options for maximum throughput
(noatime,nobarrier,data=writeback)
Basically I set everything up as described here:
http://wiki.linuxaudio.org/wiki/system_configuration
Jeremy
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