performance in pd - audiobuf, etc

[Karl MacMillan]

Ricardo,

> I got these results now, 11.dec.2000:
> G3/350 Blue- Motu2408 mkII 
> Driver: ASIO PCI-324
> 
Thanks for the hard numbers!  How did you measure this?

Karl


> In-out latency test: 
> 2226 samples = 50.476189 ms
> 
> Delay lines:
> 74 samples  = 1.678005 ms  
> 
> I have also found the fact that midi behaviour is quite unstable 
> when using OMS, the Miditimepiece(USB) MTP AV under Macos 8.6 
> and running MaxMSP. 
> 
> Ricardo
> 
> -------------------------------------------------
> # On Mon, 11 Dec 2000, Michael Lechasseur wrote:
> # 
> # > 
> # > 	Perhaps you could dual boot to Linux?  I don't have any latency data for PD
> # > on Win2000, but if you'd like to write a latency test patch, I could run it
> # > on my system and send you the results?
> # > 
> # > 	I've wanted to test this since applying the kernel low-latency patch, and
> # > have never gotten around to it.
> # > 
> # > 	I have an Athlon 600, 64MB Ram, Redhat 6.2, Kernel 2.2.16 with the
> # > low-latency patch.
> # > 
> # > > -----Original Message-----
> # > > From: d d [mailto:denglertdp at hotmail.com]
> # > > Sent: Monday, December 11, 2000 1:02 PM
> # > > To: pd-list at iem.kug.ac.at
> # > > Subject: performance in pd - audiobuf, etc
> # > >
> # > >
> # > > Hello, I'm new to PD, and have been using it sporadically for
> # > > several weeks.
> # > > It is extremely interesting, seems to do the things I can't do with my
> # > > NordModular. My thanks to all who made it possible!
> # > >
> # > > I know you probably don't want to hear this question again, but I was
> # > > wondering if there was a way to get real time audio processing
> # > > performance
> # > > out of PD. (windows 2000 pent III 500mHz, awe64, echo layla 20bit)
> # > >
> # > > I've tried adjusting all the command params, disabling devices, changing
> # > > audiobuf, etc
> # > >
> # > > Is there anyway to knock the latency to hardware like levels on
> # > > my system?
> # > > Even if the answer is different hardware, OS, etc
> # > > I'm considering a Mac purchase because cycling74 claims w/
> # > > certain hardware
> # > > a 6ms latency can be had.
> # > > Is anything this low possible with PD?
> # > > I'd much rather stay within windows.
> # > >
> # > > Sorry for the bother with this question
> # > >
> # > > I'd like to have this ultimate control over processing/creating
> # > > that PD can
> # > > give, but I also need hardware like latency In/Out
> # > > I don't want to spend money on a Kyma, because it seems logical that a PC
> # > > can do this sort of thing these days (what with the nifty fast chips and
> # > > all)
> # > >
> # > > Thanks all who read this far, sorry for the dull question
> # > > -daniel
> # > > _________________________________________________________________
> # > > Get your FREE download of MSN Explorer at http://explorer.msn.com
> # > >
> # > 
> # > 
> # 
> # -- 
> # _____________________________________________________
> # | Karl W. MacMillan                                 |
> # | Computer Music Department                         |
> # | Peabody Institute of the Johns Hopkins University |
> # | karlmac at peabody.jhu.edu                           |
> # | www.peabody.jhu.edu/~karlmac                      |
> # -----------------------------------------------------
> # 
> # 
> 
> 
> 

-- 
_____________________________________________________
| Karl W. MacMillan                                 |
| Computer Music Department                         |
| Peabody Institute of the Johns Hopkins University |
| karlmac at peabody.jhu.edu                           |
| www.peabody.jhu.edu/~karlmac                      |
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