[PD] firewire is dead?

[Miller Puckette]

If I'm reading rour post right, you're specifying 20 msec latency and getting
about 22, which is OK, but I think you should be able to get lower latencies
(i.e., I don't see that numbers like 21.9012 are too good to be true -
those are typical Macintosh latencies but I think in linux you should be
able to do much better.)

cheers
Miller

On Tue, Nov 27, 2012 at 05:15:35PM +0100, Max wrote:
> you are right - those numbers seem to be to good to be true. On the other hand I followed the instructions in the latency patch and don't know what could have been wrong.
> 
> Am 26.11.2012 um 19:04 schrieb Miller Puckette <msp at ucsd.edu>:
> 
> > Hmm - I'm getting latencies between 6 and 7 (Fedora 17, Core 7200, INTEL
> > "HDA", latest Pd from git, but I think Pd 0.43 should do similar).
> > 
> > cheers
> > Miller
> > 
> > On Mon, Nov 26, 2012 at 06:53:31PM +0100, Max wrote:
> >> Am 26.11.2012 um 16:18 schrieb J Oliver <jaime.oliver2 at gmail.com>:
> >> 
> >>> Hi Max, 
> >>> 
> >>> Is it possible for you to test this same card in linux?
> >>> 
> >>> J
> >> 
> >> I wanted to do this, but I don't have a linux machine with firewire, so i can't test the ffado driver for the card. I wanted to try out the class compliant mode, but there is a bug in ALSA which prevents it to work. see http://www.mail-archive.com/alsa-user@lists.sourceforge.net/msg28935.html
> >> I didn't wanted to get started recompiling the kernel for this. sorry. So in theory it should work, but only if you remove the bug in the ALSA part.
> >> 
> >> for the record i compared the on board intel card of the linux machine, the result is quite impressive, i don't think it can get any better:
> >> 
> >> /doc/7.stuff/tools/latency.pd
> >> Sampling rate 44100 Hz, delay 20 ms Blocksize 64
> >> Ubuntu 12.04 Intel® Core™ i3 CPU 550 @ 3.20GHz × 4
> >> Latency HDA Intel (hardware)
> >> 
> >> print: 21.9012
> >> print: 21.9037
> >> print: 21.9063
> >> print: 21.9088
> >> print: 21.9114
> >> print: 21.914
> >> print: 21.9165
> >> print: 21.9191
> >> print: 21.9217
> >> print: 21.8834
> >> print: 21.886
> >> print: 21.8885
> >> print: 21.891
> >> print: 21.8936
> >> print: 21.8961
> >> print: 21.8986
> >> print: 21.9012
> >> print: 21.9037
> >> _______________________________________________
> >> Pd-list at iem.at mailing list
> >> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
> 
> 
> _______________________________________________
> Pd-list at iem.at mailing list
> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list