Date: Fri, 21 Jan 2005 16:17:17 -0800 From: Jeff Behl <jbehl@fastclick.com> To: freebsd-amd64@FreeBSD.org Subject: Re: bsd i386 on amd64 Message-ID: <41F19B8D.4010005@fastclick.com> In-Reply-To: <20050122001320.GA39743@dragon.nuxi.com> References: <41F198F8.9020608@fastclick.com> <20050122001320.GA39743@dragon.nuxi.com>
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David O'Brien wrote: >On Fri, Jan 21, 2005 at 04:06:16PM -0800, Jeff Behl wrote: > > >>i have a dual proc 3gHz AMD Opteron box >> >> > >Impossible. :-) The fastest Opteron right now is 2.5 GHz. > > > yep, you got got me. they're 2gHz. >>that i want to run java on, so >>it looks like i have to use the i386 build (any news on the jdk coming >>to AMD?). >> >> > >You probably want to use the Linux 'i386' JDK. > > > so Linux JDK is stable and has decent performance, and won't cause me any headache in terms of compatibility with things like Tomcat? i guess byte code is byte, or so they say... >>from what i've gathered, this should not be a problem and >>performance should be at least par compared to to running on a Xeon. is >>this true? i even seem to remember hearing rumor that the Opteron could >>even run i386 code faster, mHz to mHz, than a Xeon? >> >> > >An Opteron runs all code faster MHz to MHz compared to Xeon. Opteron >has a shorter pipeline and thus can do more work per cycle. Xeon has a >very deep pipeline and thus can be clocked higher and must be clocked >higher to get the same performance. > > > great news, thanks much! jeff
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