Title: AW: [64studio-users] ALSA MIDI latency test - was: Re: opensource.com talk
Gustin Johnson wrote:
> On 10-06-21 08:42 AM, Daniel James wrote:
>> Hi Ralf,
>>>* best latency was 1.29 ms
>>>* worst latency was 7.00 ms, which is too much.
>> Thanks for running those tests, that's very helpful.
>> I'd be interested to know if other users can 'pass' this test using our
>> current distros and kernels. If not, it seems like we have some more
>> tweaking to do :-)
> Those values are what you can expect with USB MIDI.* If you have no
> choice but to use USB gear then try to minimize the number of USB
> devices that are in use.* For example use PS/2 based HIDs (aka keyboard
> and mouse).* Disconnect any other USB devices (such as printers and
> Even doing that I do not think that there is much room for improvement.
> In the next couple of days I will try and test my own rig with the RME
> and USB MIDI interfaces.*
It's the only USB device in use. Mouse and keyboard are PS/2 devices, my
printer isn't in use, but still a parallel port one and the USB stick is
just for temporarily backups and usually not connected.
I did start a reply regarding to rtirq defaults for USB and I started an experiment, but then my PATA hard disk failed and there is an issue with GRUB for my SATA.
I wasted my whole day with trying to repair GRUB for the SATA, but it didn't work.
Then I tried to run a live cd, to get access to the internet, but there is no new live cd with PPPoE and a lot of old live cds didn't run on my computer or didn't support PPPoE too.
Now I run the Ubuntu 7.10 live cd from a German magazine from 2008, it ships with pppoeconf.
Fazit: At the moment I don't have access to the ALSA MIDI latency packages and I can't run 64 Studio 3.0 beta and 3.3 alpha, both are on the broken PATA.
Tomorrow, perhaps tonight, I'll try to get access to my SATA, resp. to Suse 11.2. I don't have the time to do it now.
Hopefully my PATA will start just one time again, to get it completely up-to-date backuped, at the moment it's disconnected to nurse it.
Anyway, if I shouldn't reply to ALSA MIDI toipics, then it's not because I'm using my Atari ST, but because my PC is broken
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