Re: [LAU] How to turn off hyperthreading?

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To: <linux-audio-user@...>
Date: Sunday, December 22, 2013 - 8:04 pm

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On 12/22/2013 05:23 PM, Len Ovens wrote:

t

> a kernel command line option to have the kernel ignore some cpus, get i=
t

> to move a process onto or off an "isolated" CPU is via the CPU affinity=

> syscalls. cpu_number begins at 0, so the maximum value is 1 less than

h
it
n

> updates.

g
e-parameter-reference.html

Hello Len,

Thanks for the valuable information! If you don't mind I'll add it to
http://wiki.linuxaudio.org/wiki/system%20configuration

I thought just disabling them like:

CPU=3D( cpu1 cpu3 cpu5 cpu7 )
for i in "${CPU[@]}"
do
echo 0 > /sys/devices/system/cpu/$i/online
done

would do the trick too but on my own system I still can't go lower than
-p128 so hopefully the isolcpus parameter improves stability.

Best,

Jeremy

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Messages in current thread:
[LAU] A2J-MIDI Bridge error, Kevin Utter, (Fri Dec 20, 5:37 pm)
Re: [LAU] A2J-MIDI Bridge error, Jeremy Jongepier, (Fri Dec 20, 6:58 pm)
Re: [LAU] A2J-MIDI Bridge error, Kevin Utter, (Sat Dec 21, 2:59 pm)
Re: [LAU] A2J-MIDI Bridge error, Jeremy Jongepier, (Sat Dec 21, 7:06 pm)
Re: [LAU] A2J-MIDI Bridge error, Jeremy Jongepier, (Sat Dec 21, 7:11 pm)
Re: [LAU] A2J-MIDI Bridge error, Len Ovens, (Sat Dec 21, 5:04 pm)
[LAU] How to turn off hyperthreading?, david, (Sun Dec 22, 6:34 am)
Re: [LAU] How to turn off hyperthreading?, Gene Heskett, (Sun Dec 22, 9:52 am)
Re: [LAU] How to turn off hyperthreading?, Moshe Werner, (Sun Dec 22, 6:57 am)
Re: [LAU] How to turn off hyperthreading?, david, (Sun Dec 22, 7:24 am)
Re: [LAU] How to turn off hyperthreading?, Len Ovens, (Sun Dec 22, 4:37 pm)
Re: [LAU] How to turn off hyperthreading?, Jeremy Jongepier, (Sun Dec 22, 8:04 pm)
Re: [LAU] How to turn off hyperthreading?, Len Ovens, (Sun Dec 22, 11:25 pm)
Re: [LAU] How to turn off hyperthreading?, Len Ovens, (Sun Dec 22, 9:23 pm)
Re: [LAU] A2J-MIDI Bridge error, Paul Davis, (Fri Dec 20, 6:09 pm)
Re: [LAU] A2J-MIDI Bridge error, Ralf Mardorf, (Fri Dec 20, 6:01 pm)