Re: [LAU] Balance between performance and noise

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From: rosea.grammostola <rosea.grammostola@...>

To: <linux-audio-user@...>

Subject: Re: [LAU] Balance between performance and noise

Date: Thursday, December 9, 2010 - 5:42 pm

On 12/09/2010 06:35 PM, Robin Gareus wrote:

quoted text> On 11/27/10 13:11, Arnold Krille wrote:

>

>> Set ther cpu-governor to performance (so it doesn't switch frequencies which

>> produces xruns) but reduce the maximum allowed frequency.

>>

> what kernel are you running?

>

> I do have realtime-kernels (2.6.31.12-rt21, 2.6.33.7-rt29) running on 4

> PCs/Laptops (Intel core duo 32bit, Intel Core 2 Duo 64bit, Atom and an

> Intel-i5) and on none of them frequency-scaling ever caused any x-runs.

> The ondemand governor is ruling them all.

>

> It /might/ be an issue with other CPUs or mainboards.. or non-RT

> systems, or with extreme low latency. But I'm not seeing any issues with

> freq scaling even at 32*2@48kHz.

>

I think there might be other variables, like ffado usage (audiofire 2),

firewire chipset (ricoh)...

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Messages in current thread:

[LAU] Balance between performance and noise, rosea.grammostola, (Sat Nov 27, 10:24 am)

Re: [LAU] Balance between performance and noise, Leigh Dyer, (Sat Nov 27, 12:15 pm)

Re: [LAU] Balance between performance and noise, rosea.grammostola, (Thu Dec 9, 4:53 pm)

Re: [LAU] Balance between performance and noise, rosea.grammostola, (Sat Nov 27, 10:29 pm)

Re: [LAU] Balance between performance and noise, Arnold Krille, (Sat Nov 27, 12:11 pm)

Re: [LAU] Balance between performance and noise, Robin Gareus, (Thu Dec 9, 5:36 pm)

Re: [LAU] Balance between performance and noise, Fernando Lopez-Lezcano, (Thu Dec 9, 8:24 pm)

Re: [LAU] Balance between performance and noise, rosea.grammostola, (Thu Dec 9, 5:42 pm)

Re: [LAU] Balance between performance and noise, Fabio, (Thu Dec 9, 5:41 pm)

Re: [LAU] Balance between performance and noise, Fabio, (Thu Dec 9, 5:43 pm)

Re: [LAU] Balance between performance and noise, rosea.grammostola, (Thu Dec 9, 5:39 pm)

Re: [LAU] Balance between performance and noise, Robin Gareus, (Thu Dec 9, 8:10 pm)

Re: [LAU] Balance between performance and noise, rosea.grammostola, (Sat Jan 29, 11:50 am)

Re: [LAU] Balance between performance and noise, rosea.grammostola, (Tue Dec 28, 9:03 pm)

Re: [LAU] Balance between performance and noise, Robin Gareus, (Fri Jan 7, 1:12 pm)

Re: [LAU] Balance between performance and noise, Fernando Lopez-Lezcano, (Thu Dec 9, 11:54 pm)

Re: [LAU] Balance between performance and noise, Fernando Lopez-Lezcano, (Fri Dec 10, 1:13 am)

Re: [LAU] Balance between performance and noise, rosea.grammostola, (Sat Nov 27, 10:11 pm)