Re: [LAU] OS for realtime operation

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To: <linux-audio-user@...>
Date: Tuesday, January 10, 2012 - 2:43 pm

On Tuesday, January 10, 2012 09:28:12 AM Jeremy Jongepier did opine:

> On 01/10/12 01:07, Diego Simak wrote:

This isn't exactly realtime, where latencies measured in small numbers of
microseconds count big time. Over on the emc list, where we depend on
being able to feed stepper motors with very steady heartbeats to keep them
running smoothly at high speeds, we have found a motherboard with extremely
low latencies, like 7 microseconds without resorting to the use of the
isolcpus= boot param, and with it, figures in the 5 microsecond range have
been seen.

This is on a dirt cheap intel D-525 motherboard, with a dual core 1.8 ghz
atom cpu on it, doesn't even need a fan! I just bought the whole box with
2Gb of ram, a 250Gb Sata HD and a sata dvd writer for $246 delivered to my
front deck.

Because emc is a special build, running only on an RTAI enabled kernel, we
are stuck with a 2.6.32 kernel that comes with ubuntu-10.04 LTS, but I just
saw where next LTS is already committed to a 3.2 kernel.

> But the

Get it filed then. The quicker its filed, the quicker it will get fixed
(if its not Juce's fault that is.)

> Best,

Cheers, Gene
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
My web page:
There's got to be more to life than compile-and-go.
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Messages in current thread:
[LAU] OS for realtime operation, Moshe Werner, (Mon Jan 9, 2:24 pm)
Re: [LAU] OS for realtime operation, Carlos sanchiavedraz, (Wed Jan 11, 2:43 pm)
Re: [LAU] OS for realtime operation, Josh Lawrence, (Thu Jan 12, 8:07 pm)
Re: [LAU] OS for realtime operation, Carlos sanchiavedraz, (Fri Jan 13, 12:02 pm)
Re: [LAU] OS for realtime operation, david, (Wed Jan 11, 5:05 pm)
Re: [LAU] OS for realtime operation, Dave Phillips, (Wed Jan 11, 2:47 pm)
Re: [LAU] OS for realtime operation, Carlos sanchiavedraz, (Thu Jan 12, 8:11 am)
Re: [LAU] OS for realtime operation, david, (Thu Jan 12, 8:25 am)
Re: [LAU] OS for realtime operation, Carlos sanchiavedraz, (Thu Jan 12, 4:08 pm)
Re: [LAU] OS for realtime operation, david, (Thu Jan 12, 6:00 pm)
Re: [LAU] OS for realtime operation, michael noble, (Tue Jan 10, 12:47 am)
Re: [LAU] OS for realtime operation, Ronald Stewart, (Tue Jan 10, 1:05 am)
Re: [LAU] OS for realtime operation, Jeremy Jongepier, (Mon Jan 9, 9:06 pm)
Re: [LAU] OS for realtime operation, Moshe Werner, (Mon Jan 9, 10:01 pm)
Re: [LAU] OS for realtime operation, Jeremy Jongepier, (Tue Jan 10, 9:02 am)
Re: [LAU] OS for realtime operation, Paul Davis, (Tue Jan 10, 12:44 pm)
Re: [LAU] OS for realtime operation, tee, (Thu Jan 12, 4:15 pm)
Re: [LAU] OS for realtime operation, david, (Fri Jan 13, 4:59 am)
Re: [LAU] OS for realtime operation, Raffaele Morelli, (Fri Jan 13, 7:45 am)
Re: [LAU] OS for realtime operation, Nicola Pandini, (Sat Jan 14, 10:38 am)
Re: [LAU] OS for realtime operation, Moshe Werner, (Mon Feb 20, 7:38 am)
Re: [LAU] OS for realtime operation, david, (Fri Jan 13, 8:43 am)
Re: [LAU] OS for realtime operation, fred, (Tue Jan 10, 7:17 pm)
Re: [LAU] OS for realtime operation, Moshe Werner, (Wed Jan 11, 1:11 pm)
Re: [LAU] OS for realtime operation, Fons Adriaensen, (Wed Jan 11, 2:55 pm)
Re: [LAU] OS for realtime operation, Brett McCoy, (Wed Jan 11, 1:39 pm)
Re: [LAU] OS for realtime operation, Diego Simak, (Tue Jan 10, 12:07 am)
Re: [LAU] OS for realtime operation, Jeremy Jongepier, (Tue Jan 10, 8:15 am)
Re: [LAU] OS for realtime operation, gene heskett, (Tue Jan 10, 2:43 pm)
Re: [LAU] OS for realtime operation, Jeremy Jongepier, (Tue Jan 10, 3:13 pm)
Re: [LAU] OS for realtime operation, Hartmut Noack, (Mon Jan 9, 5:29 pm)
Re: [LAU] OS for realtime operation, Moshe Werner, (Mon Jan 9, 5:53 pm)
Re: [LAU] OS for realtime operation, Hartmut Noack, (Mon Jan 9, 9:05 pm)
Re: [LAU] OS for realtime operation, Raffaele Morelli, (Mon Jan 9, 3:05 pm)
Re: [LAU] OS for realtime operation, Moshe Werner, (Mon Jan 9, 3:23 pm)
Re: [LAU] OS for realtime operation, Raffaele Morelli, (Tue Jan 10, 7:02 am)
Re: [LAU] OS for realtime operation, Fons Adriaensen, (Mon Jan 9, 4:03 pm)
Re: [LAU] OS for realtime operation, Joe Hartley, (Mon Jan 9, 3:58 pm)
Re: [LAU] OS for realtime operation, Moshe Werner, (Mon Jan 9, 4:24 pm)