Date: Thu, 04 May 2006 21:50:55 -0500 From: Eric Anderson <anderson@centtech.com> To: Darren Pilgrim <darren.pilgrim@bitfreak.org> Cc: freebsd-hackers@freebsd.org Subject: Re: Core Duo - only one cpu being used Message-ID: <445ABD8F.4060208@centtech.com> In-Reply-To: <445ABCB7.5020301@bitfreak.org> References: <445AB56F.8090907@centtech.com> <445ABCB7.5020301@bitfreak.org>
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Darren Pilgrim wrote: > Eric Anderson wrote: >> Forgive me if I've missed this on a list somewhere, but My new laptop >> with a Core Duo doesn't seem to use both CPU's. It sees both, but I >> never see anything on cpu 1. Here's a top snippet: > > Your top output shows a single process eating the CPU. A single process > can't span CPUs, so you're only going to see one CPU in use. You need > to do something in parallel, like make -j N where N > 1. I understand that a single process won't span cpu's, but there isn't a single process on the second cpu, and running multiple: cat /dev/random | md5 Still slams one cpu. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
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