linux-kernel - Re: Hyperthreading on 4 core CPU DECREASES performance???

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Message-ID: <20091028204628.GA8519@rhlx01.hs-esslingen.de>
Date:	Wed, 28 Oct 2009 21:46:28 +0100
From:	Andreas Mohr <andi@...as.de>
To:	Igor Chudov <ichudov@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Hyperthreading on 4 core CPU DECREASES performance???

Hi,

> 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 Mohr
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