Re: [LAU] xrun problems. (Was Re: Introduction to Ardour 3.0 MIDI)

From: Clemens Ladisch <clemens@email-addr-hidden>
Date: Wed Mar 30 2011 - 15:18:41 EEST

Paul Davis wrote:
> i have a 6 core athlon phenom II X6 1090T (3.6GHz) system. i get xruns
> "regularly". i don't know why.

Modern power management mechanisms are quite aggressive, but increase
latency because of all the time needed to wake the hardware up again.

Try disabling C1E in the BIOS, and/or try disabling CPU frequency
scaling.

If the xruns do happen in regular time intervals, your problem might be
the BIOS which does something in SMIs (system management interrupts).
In that case, your only choices are to disable that BIOS function (if
possible; AFAIK only some IBM servers have that option:
<http://publib.boulder.ibm.com/infocenter/lnxinfo/v3r0m0/topic/liaai/realtime/liaairtsmi.htm>),
or to get a different mainboard.

Regards,
Clemens
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Received on Wed Mar 30 16:15:04 2011

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