Re: Hyperthreading on 4 core CPU DECREASES performance???

From: Igor Chudov
Date: Wed Oct 28 2009 - 17:11:57 EST


On Wed, Oct 28, 2009 at 3:46 PM, Andreas Mohr <andi@xxxxxxxx> wrote:
>> I would like to know how can I make the scheduler to prefer to spread
>> the tasks across physical cores as opposed to bundling two on one core
>> and leaving some cores idle.
>
> Did you have /sys/devices/system/cpu/sched_smt_power_savings activated?

Andreas, no, I did not have it activated, it was set to 0. I did check
it before and double checked it now.
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