From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id AE0B91381F3 for ; Thu, 1 Aug 2013 01:02:46 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 09135E0B32; Thu, 1 Aug 2013 01:02:42 +0000 (UTC) Received: from ironport2-out.teksavvy.com (ironport2-out.teksavvy.com [206.248.154.182]) by pigeon.gentoo.org (Postfix) with ESMTP id E056AE0B03 for ; Thu, 1 Aug 2013 01:02:40 +0000 (UTC) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Av8EABK/CFG4rxNq/2dsb2JhbABEvw4Xc4IeAQEEATocKAsLIRMSDwUlEAEmiAsGwS2NBhpBgkhhA41+iA6FfohwgV6DEw X-IPAS-Result: Av8EABK/CFG4rxNq/2dsb2JhbABEvw4Xc4IeAQEEATocKAsLIRMSDwUlEAEmiAsGwS2NBhpBgkhhA41+iA6FfohwgV6DEw X-IronPort-AV: E=Sophos;i="4.84,565,1355115600"; d="scan'208";a="20308567" Received: from 184-175-19-106.dsl.teksavvy.com (HELO waltdnes.org) ([184.175.19.106]) by ironport2-out.teksavvy.com with SMTP; 31 Jul 2013 21:02:32 -0400 Received: by waltdnes.org (sSMTP sendmail emulation); Wed, 31 Jul 2013 21:02:32 -0400 From: "Walter Dnes" Date: Wed, 31 Jul 2013 21:02:32 -0400 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Recommendation for CPU type in QEMU? Message-ID: <20130801010232.GC27364@waltdnes.org> References: <20130731101124.GB26440@waltdnes.org> <51F8EADC.1010006@fastmail.co.uk> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <51F8EADC.1010006@fastmail.co.uk> User-Agent: Mutt/1.5.21 (2010-09-15) X-Archives-Salt: 76cc02a7-dcd2-4849-a0c2-feb38a86adc1 X-Archives-Hash: bf277f279d3972433558f0109f175859 On Wed, Jul 31, 2013 at 11:45:48AM +0100, Kerin Millar wrote > Please provide the content of /proc/cpuinfo on the host. The first one is my shiney almost new desktop (Dell Inspiron 660) and the second one is my "hot backup" (more like emergency backup, 6-year-old Dell Dimension 530). I'll be on the new machine unless it breaks. But I do want to be able to port the QEMU VM to the older machine as part of its "hot backup" status. On any other distro, it wouldn't matter, but I have "-march=native" in make.conf, so I do have to worry about keeping binaries compatable. If I build for "Intel Core 2 Duo CPU E4600" on both machines, would I be losing noticable performance? Right now, it's just one Windows program that I'll be running occasionally. So I'd rather trade off a bit less speed on the new machine, versus compatability issues. I also prefer to be able to scp the VM disk images to the backup machine, rather than having to do a separate install on each machine. processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 58 model name : Intel(R) Core(TM) i5-3330 CPU @ 3.00GHz stepping : 9 microcode : 0x15 cpu MHz : 2993.981 cache size : 6144 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms bogomips : 5987.96 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Core(TM)2 Duo CPU E4600 @ 2.40GHz stepping : 13 microcode : 0xa1 cpu MHz : 2400.000 cache size : 2048 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm bogomips : 4788.45 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: -- Walter Dnes I don't run "desktop environments"; I run useful applications