linux-kernel - Re: Quad core CPUs loaded at only 50% when running a CPU and mmap intensive multi-threaded task

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Message-Id: <1219643476.20732.1.camel@twins>
Date:	Mon, 25 Aug 2008 07:51:16 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Török Edwin <edwintorok@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>, rml@...h9.net,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	"Thomas Gleixner mingo@...hat.com" <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: Quad core CPUs loaded at only 50% when running a CPU and mmap
	intensive multi-threaded task

On Mon, 2008-08-25 at 00:01 +0300, Török Edwin wrote:
> Hi Ingo,
> 
> When I run clamd (www.clamav.net), I can only get to load my CPU 50% 
> (according to top), and disks at 30% (according to iostat -x 3), 
> regardless how many threads I set (I tried 4, 8, 16, 32).


Can you share your .config, and prehaps tell what kernel version did
work for you?

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