From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 00/18] KVM: PPC: Virtualize Gekko guests Date: Thu, 18 Feb 2010 10:04:41 +0200 Message-ID: <4B7CF499.8090909@redhat.com> References: <1265298925-31954-1-git-send-email-agraf@suse.de> <4B6EB7F6.10304@redhat.com> <4B6EE8B2.80009@redhat.com> <4B6F3890.8090401@suse.de> <4B6FD118.2090207@redhat.com> <4B714049.7010201@suse.de> <4B7141B3.8000309@redhat.com> <4B71435E.7010103@suse.de> <4B7154A6.6050809@redhat.com> <80F0B53A-6F83-4166-8F85-5D9B07526158@suse.de> <4B7C134C.9040009@redhat.com> <3A11C6BE-4774-42D9-B13B-D989AD2E6ED6@suse.de> <4B7C1A91.8060205@redhat.com> <4B7CEEFF.9000801@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: "kvm-ppc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" To: Alexander Graf Return-path: In-Reply-To: <4B7CEEFF.9000801-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> Sender: kvm-ppc-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: kvm.vger.kernel.org On 02/18/2010 09:40 AM, Avi Kivity wrote: >> Now you made me check how fast the real hw is. I get about 65,000,000 >> fmul operations per second on it. >> > > That's surprisingly low. I get 3.7 Gflops on my home machine (1G loops, 4 fmul and 4 fadds, all independent, in 2.15 seconds; otherwise I can't saturate the pipeline). -- Do not meddle in the internals of kernels, for they are subtle and quick to panic.